Organization and Staff (December 2021)
Director

Dr. TANAKA Manabu

1. Research Division of Materials Joining Process
1) Energy Control of Processing
Professor
Associate Professor
Assistant Professor
Specially Appointed Associate Professor
Guest Professor
Guest Professor
Guest Professor
Guest Professor
Guest Academic Staff
Guest Researcher

Dr. TANAKA Manabu
Dr. KOMEN Hisaya
Dr. TASHIRO Shinichi
Dr. LI Fang
Dr. NAKATA Kazuhiro
Dr. MITA Tsuneo
Dr. NISHIYAMA Hideya
Dr. HOSOI Koichi
Dr. XU Bin
Dr. FUJIYAMA Shoji

2) Energy Transfer Dynamics
Professor
Associate Professor
Assistant Professor
Guest Professor
Guest Professor

Dr. SETSUHARA Yuichi
Dr. TAKENAKA Kosuke
Dr. TOKO Susumu
Dr. ONO Kouichi
Dr. UCHIDA Giichiro

3) Manufacturing Process
Professor
Associate Professor
Guest Professor
Guest Professor
Guest Professor
Guest Professor
Guest Academic Staff
Specially Appointed Researcher
Specially Appointed Researcher
Guest Researcher
Guest Researcher

Dr. NISHIKAWA Hiroshi
Dr. TATSUMI Hiroaki
Dr. TAKAHASHI Yasuo
Dr. UCHIDA Shigeaki
Dr. ITAKURA Keijirou
Dr. CHAN Yan Cheong
Dr. ZHANG Ning
Dr. NAOE Takuya
Mr. SASAKI Kishichi
Dr. KOHINATA Shigeru
Dr. PU Juan

4) Laser Materials Processing
Professor
Associate Professor
Guest Professor
Specially Appointed Researcher
Specially Appointed Researcher
Specially Appointed Researcher
Guest Researcher

Dr. TSUKAMOTO Masahiro
Dr. SATO Yuji
Dr. KIKUCHI Yasushi
Mr. TAKENAKA Keisuke
Ms. HIGASHINO Ritsuko
Mr. YOSHIDA Norio
Dr. DEWI Handika Sandra

5) Advanced Engineering Science
Guest Professor

Dr. TAKADA Kazunori

2. Research Division of Materials Joining Mechanism
1) Welding Mechanism
Professor
Professor*
Associate Professor *Assistant Professor
Specially Appointed Associate Professor
Guest Professor

Dr. ITO Kazuhiro
Dr. MIKAMI Yoshiki
Dr. TAKAHASHI Makoto
Dr. YAMAMOTO Hajime
Dr. ZHAO Bingbing
Dr. OGAWA Kazuhiro

2) Joint Interface Structure and Formation Mechanism
Professor
Assistant Professor
Specially Appointed Professor
Specially Appointed Associate Professor
Specially Appointed Associate Professor
Specially Appointed Associate Professor
Specially Appointed Associate Professor
Guest Professor
Guest Academic Staff
Specially Appointed Researcher
Specially Appointed Researcher
Specially Appointed Researcher
Specially Appointed Researcher

Dr. FUJII Hidetoshi
Dr. YAMASHITA Takayuki
Dr. USHIODA Kohsaku
Dr. MORISADA Yoshiaki
Dr. CHEN Juan
Dr. AOKI Yasuhiro
Dr. MIURA Takuya
Dr. NAGIRA Tomoya
Mr. KAGIYA Kei
Mr. KAMAI Masayoshi
Dr. SHARMA Abhishek
Mr. KAWAKUBO Takumi
Mr. AIBARA Takumi

3) Composite Materials Processing
Professor
Associate Professor
Assistant Professor
Specially Appointed Assistant Professor
Specially Appointed Assistant Professor
Guest Professor
Guest Professor
Specially Appointed Researcher
Specially Appointed Researcher
Specially Appointed Researcher
Specially Appointed Researcher

Dr. KONDOH Katsuyoshi
Dr. UMEDA Junko
Dr. SHITARA Kazuki
Dr. ISSARIYAPAT Ammarueda
Dr. KARIYA Shota
Dr. MA Qian
Dr. MIURA Hideshi
Mr. HORIE Mitsuo
Ms. FUJII Hiroko
Mr. MINAMITANI Ryoji
Mr. PETERSON Jack Edward

3. Research Division of Materials Joining Assessment
1) Joining Mechanics and Analyses
Professor
Associate Professor
Assistant Professor
Specially Appointed Assistant Professor
Specially Appointed Researcher
Guest Researcher

Dr. MA Ninshu
Dr. SERIZAWA Hisashi
Dr. GENG Peihao
Dr. WANG Qian
Mr. NARASAKI Kunio
Dr. WU Dongsheng

2) Structural Integrity and Failure Assessments
Professor *Dr. INOUE Hiroshige

3) Joining Design and Dependability
Professor
Associate Professor
Specially Appointed Associate Professor
Specially Appointed Researcher

Dr. MIKAMI Yoshiki
Dr. TSUTSUMI Seiichiro
Dr. FINCATO Riccardo
Dr. LUO Pengjun

4) Reliability Evaluation & Simulation
Professor
Associate Professor
Assistant Professor
Guest Researcher
4. Smart Processing Research Center
Director, Professor
1) Smart Coating Processing
Professor
Assistant Professor
Guest Associate Professor
Specially Appointed Researcher

Dr. INOUE Hiroshige
Dr. KADOI Kota
Dr. HOU Yuyang
Dr. SINGH Handa Sukhdeep
Dr. FUJII Hidetoshi
Dr. NAITO Makio
Dr. KOZAWA Takahiro
Dr. KAMITANI Masataka
Dr. KONDO Akira

2) Nano/Micro Structure Control
Professor
Assistant Professor

Dr. KIRIHARA Soshu
Dr. SPIRRETT Fiona

3) Smart Green Processing
Professor *Associate Professor
Specially Appointed Researcher

Dr. NISHIKAWA Hiroshi
Dr. ABE Hiroya
Dr. LI Fei

5. Joint Interface Microstructure Characterization Room
Associate Professor

Dr. TAKAHASHI Makoto

6. JFE Welding Research Alliance Laboratories
Director, Professor *Vice Director, Guest Professor
Vice Director, Guest Professor
Professor *Professor *Professor *Professor *Professor *Associate Professor *Associate Professor *Associate Professor *Dr. TANAKA Manabu
Dr. OI Kenji
Dr. TAGAWA Tetsuya
Dr. FUJII Hidetoshi
Dr. ITO Kazuhiro
Dr. TSUKAMOTO Masahiro
Dr. INOUE Hiroshige
Dr. MIKAMI Yoshiki
Dr. TSUTSUMI Seiichiro
Dr. KADOI Kota
Dr. SATO Yuji

7. DAIHEN Welding and Joining Research Alliance Laboratories
Director, Professor *Dr. INOUE Hiroshige
Vice Director, Professor *Dr. TANAKA Manabu
Vice Director, Guest Professor
Dr. ERA Tetsuo
Specially Appointed Professor
Dr. ASAI Satoru
Specially Appointed Assistant Professor
Ms. MATSUDA Natsume
Guest Associate Professor
Dr. KADOTA Keiji
Professor *Dr. ITO Kazuhiro
Professor *Dr. TSUKAMOTO Masahiro
8. Nippon Steel Future Manufacturing Research Alliance Laboratories
Director, Professor *Dr. FUJII Hidetoshi
Vice Director, Professor *Dr. INOUE Hiroshige
Vice Director, Guest Professor
Dr. HIRATA Hiroyuki
Guest Associate Professor
Dr. FUJIMOTO Hiroki
Guest Researcher
Ms. JOTOKU Kana
Guest Researcher
Mr. WATANABE Koutarou
Guest Researcher
Mr. MATSUI Sho
Guest Researcher
Mr. NOMOTO Masashi
9. Hitachi Zosen Advanced Welding Technology Joint Research Chair
Specially Appointed Associate Professor
Dr. KAMIKAWA Kenji
Specially Appointed Assistant Professor
Dr. ABE Yohei
Specially Appointed Assistant Professor
Mr. FUJIMOTO Takahiro
Guest Professor
Dr. NAKATANI Mitsuyoshi
Guest Professor
Dr. KATAYAMA Seiji
Guest Professor
Dr. MINAMI Fumiyoshi
Guest Researcher
Dr. TANIGAWA Daichi
Professor *Dr. TANAKA Manabu
Professor *Dr. TSUKAMOTO Masahiro
10. Osaka Fuji "Advanced Functional Processing" Joint Research Chair
Specially Appointed Professor
Dr. ABE Nobuyuki
Specially Appointed Assistant Professor
Mr. HAYASHI Yoshihiko
Specially Appointed Assistant Professor
Mr. MIZUTANI Masami
Specially Appointed Researcher
Mr. IKEDA Keiichirou
Guest Researcher
Mr. AZUMI Kazuyuki
Guest Researcher
Mr. TATSUMI Yoshihiro
Professor *Dr. TSUKAMOTO Masahiro
Associate Professor *Dr. SATO Yuji
11. Advanced Joint Production System Joint Research Chair
Specially Appointed Professor
Mr. MUKUDA Muneaki
Guest Researcher
Mr. AMASAKI Tetsuya
Guest Researcher
Mr. HARADA Naohiko
Guest Researcher
Mr. MURASE Keisuke
Professor *Dr. FUJII Hidetoshi
Specially Appointed Associate Professor *Dr. MORISADA Yoshiaki
12. Design & Engineering by Joint Inverse Innovation for Materials Architecture－ DEJI2MA Project －Leader, Professor *Dr. SETSUHARA Yuichi
Specially Appointed Professor
Dr. OHARA Satoshi

13. Center to Create Research and Educational Hubs for Innovative Manufacturing in
Asia / "Division of International Collaboration Research" and"Division of Global Human Resource Development"
Director, Professor *Dr. TANAKA Manabu
Leader, Professor *Dr. KONDOH Katsuyoshi
Leader, Professor *Dr. NISHIKAWA Hiroshi
Specially Appointed Associate Professor
Ms. KATSUMATA Mihoko
Specially Appointed Assistant Professor
Ms. TERANISHI Misa
Specially Appointed Assistant Professor
Dr. BAHADOR Abdollah
Specially Appointed Assistant Professor
Dr. MA Yunwu
14. Global Collaborative Research Center for Computational Welding Science (CCWS)
Leader, Professor *Dr. MA Ninshu
Guest Professor
Dr. MURAKAWA Hidekazu
Guest Professor
Dr. HIRAOKA Kazuo
Guest Professor
Dr. MATSUYAMA Kinichi
Guest Professor
Dr. LI ChangJiu
Guest Professor
Dr. YASUKI Tsuyoshi
Guest Associate Professor
Dr. SHIBAHARA Masakazu
Associate Professor *Dr. SERIZAWA Hisashi
15. International Research Center for Fatigue Design of Weld Structures (FDWS)
Leader, Professor *Dr. FUJII Hidetoshi
Guest Professor
Dr. TERADA Kenjiro
Associate Professor *Dr. TSUTSUMI Seiichiro
Specially Appointed Associate Professor *Dr. FINCATO Riccardo
16. Joining Technology Hub
Leader, Professor *Professor *Professor *Associate Professor *Specially Appointed Associate Professor *Specially Appointed Associate Professor *Guest Academic Staff *Researcher
Graduate School of Engineering, Professor *Graduate School of Engineering, Professor *Graduate School of Engineering, Professor *Graduate School of Engineering, Professor *Graduate School of Engineering, Associate Professor *Graduate School of Engineering, Assistant Professor *Dr. FUJII Hidetoshi
Dr. TANAKA Manabu
Dr. ITO Kazuhiro
Dr. SERIZAWA Hisashi
Dr. MORISADA Yoshiaki
Dr. AOKI Yasuhiro
Mr. KAGIYA Kei
Mr. OGURA Takuya
Dr. HIROSE Akio
Dr. SAIDA Kazuyoshi
Dr. OHATA Mitsuru
Dr. SANO Tomokazu
Dr. OGURA Tomo
Dr. MATSUDA Tomoki

17. Research Institute for Joining and Welding with Blue Diode Laser
Professor *Dr. TSUKAMOTO Masahiro
Associate Professor *Dr. SATO Yuji
Specially Appointed Professor *Dr. ABE Nobuyuki
Specially Appointed Researcher *Mr. TAKENAKA Keisuke
Specially Appointed Researcher *Ms. HIGASHINO Ritsuko
18. Industry Cooperation Office
Professor *Specially Appointed Professor* Supplementary Assignment

Dr. SETSUHARA Yuichi
Dr. SUGA Tetsuo

Transactions of JWRI, Vol.50, 2021
CONTENTSRESEARCH ACTIVITIES OF JWRI
Research Division of Materials Joining Process
Dep. of Energy Control of Processing ………………………………………………………………………….
Dep. of Energy Transfer Dynamics ……………………………………………………………………………….
Dep. of Manufacturing Process ……………………………………………………………………………………
Dep. of Laser Materials Processing ………………………………………………………………………………

1
2
3
4

Research Division of Materials Joining Mechanism
Dep. of Welding Mechanism ……………………………………………………………………………………….. 5
Dep. of Joint Interface Structure and Formation …………………………………………………………. 6
Dep. of Composite Materials Processing …………………………………………………………………….. 7
Research Division of Materials Joining Assessment
Dep. of Joining Mechanics and Analyses …………………………………………………..……….…….….. 8
Dep. of Joining Design and Dependability ……………………………….…………………..……………… 9
Dep. of Reliability Evaluation & Simulation ………………………………………………….………………. 10
Smart Processing Research Center
Dep. of Smart Coating Processing …………………………………………………..…………….………….….. 11
Dep. of Nano/Micro Structure Control …………………………………………………..…………..….….….. 12
Dep. of Smart Green Processing ……………………………………………………….………………..………... 13
Hitachi Zosen Advanced Welding Technology Joint Research Chair ………………….…………..… 14
Osaka Fuji "Advanced Functional Processing" Joint Research Chair ………………………..…….…. 15
Design & Engineering by Joint Inverse Innovation for Materials Architecture－ DEJI2MA Project － …………………………………………………………………………………………………… 16Center to Create Research and Educational Hubs for Innovative Manufacturing in Asia /"Division of International Collaboration Research" and"Division of Global Human Resource Development" …………………………………………..…………… 17

CONTRIBUTION TO OTHER ORGANIZATIONS ………………………………………..….….….……. 18

Research Division of Materials Joining Process, Dep. of Energy Control ofProcessing
Research summary
The main research subject is the development of the high density energy source for processing
advanced materials having special functions and properties. We undertake fundamental
investigations of the properties of the high energy source interacting with materials, and we study
advanced control techniques for optimizing the energy transport.
Major emphasis is placed on the generation, control and energy transport in arc plasmas, which
are a high density energy source which have been applied to a variety of materials processing
techniques such as welding, cutting, heating, high temperature processing, surface modificationand the creation of powders.

Research subjects(1) Generation and control of thermal plasmas, and their application to welding and joining
processes(2) Arc physics, molten pool behavior, and transport theory in fusion welding(3) Development of new arc electrodes based on the analysis of electrode-plasma interaction(4) Development of advanced high quality clean welding processes(5) Development of new generation welding and joining processes employing atmospheric pressureplasma(6) Control of arc discharge in lighting and electrical devices

Optical measurement of electron density and plasma
temperature during spray transfer and globular transfer in gas
metal arc welding process ((a) Electron density, (b) Spraytransfer, (c) Globular transfer). An addition of CO2 into shielding
gas causes constriction of arc current toward the arc axis, whichleads to globular transfer due to increase in arc pressure.

Numerical simulation on effects of constricted nozzle on arc phenomena in TIG
welding process ((a) Temperature distribution in conventional TIG welding, (b)Temperature distribution in TIG welding with a constricted nozzle, (c) Heat flux
to the anode surface). In TIG welding with a constricted nozzle, arc temperature
increases due to constriction of arc. Consequently, larger heat flux to the anodesurface is obtained compared with that of conventional TIG welding.

Major Papers
K. Tanaka, M. Shigeta, H. Komen and M. Tanaka, “Electrode Contamination Caused by Metal Vapour Transport
during Tungsten Inert Gas Welding”, Sci. Technol. Weld. Joining, 26, 3 (2021), 258-263.
H. Komen, M. Shigeta, M. Tanaka, Y. Abe, T. Fujimoto, M. Nakatani and A. B. Murphy, “Numerical Investigationof Heat Transfer During Submerged Arc Welding Phenomena by Coupled DEM-ISPH Simulation”, Int. J. Heat
Mass Transf., 171 (2021), 121062.
S. Tashiro, S. Miki, A. B. Murphy, M. Tanaka, Y. Kisaka, F. Kimura, T. Suwa and Y. Takahashi, “Influence of Groove
on Metal Vapour Behavior and Arc Characteristics in TIG Welding of High Manganese Stainless Steels”, Plasma
Chem. Plasma Process. (2021)
N. Q. Trinh, S. Tashiro, K. Tanaka, T. Suga, T. Kakizaki, K. Yamazaki, T. Morimoto, H. Shimizu,
A. Lersvanichkool, A. B. Murphy, H. V. Bui and M. Tanaka, “Effects of Alkaline Elements on the Metal Transfer
Behavior in Metal Cored Arc Welding”, J. Manuf. Process., 68 (2021), 1448-1457.

1

Research Division of Materials Joining Process, Dep. of Energy Transfer Dynamics
Research summary
Our research activities encompass works on development of process control technologies of
surface and interface for advancement of materials joining science and processing technologies
through creation of novel process-energy sources (plasmas and particle beams), and span the range
of applications from to functionalization of materials to their process control. These research
activities are based on fundamental studies on energy transfer dynamics involved in a variety ofmaterials processing with process-energy sources.

Research subjects(1) Development of novel plasma sources and particle beams for advanced process technologies(CVD, PVD)
(2) Development of novel large-area, low-damage and high-density plasma sources for advanced
process control of functional materials(3) Development of novel large-area, low-damage and high-density plasma sources for advanced
process control of functional materials(4) Creation of softmaterial processing science for development of advanced green
nanotechnologies with inorganic/organic flexible hybrid structures(5) Studies on temporal and spatial control of discharge for development of innovative plasma
sources for plasma medicine

Development of innovative plasma source for plasma medicine(a) ICCD images of atmospheric RF plasmas(b) Frequency dependence of discharge breakdown voltage(c) Frequency dependence of O optical emission intensity

Low-damage and ultra-large-area plasma source withmultiple low inductance antenna modules

Major Papers
K. Takenaka, Y. Setsuhara, G. Uchida and A. Ebe, “Amorphous InGaZnOx Thin Film Formation by a PlasmaAssisted Reactive Process”, OYO BUTSURI, 90, 1 (2021), 35-39.
K. Takenaka and Y. Setsuhara, “Formation of Functional Oxide Thin Film by Plasma-assisted Reactive Process
Using Mist”, J. Smart Process., 10, 1 (2021), 10-14.
J. Hayashi, K. Nagai, Y. Habu, Y. Ikebe, M. Hiramatsu, R. Narishige, N. Itagaki, M. Shiratani, Y. Setsuhara and G.
Uchida, “Morphological Control of Nanostructured Ge Films in High Ar-gas-pressure Plasma Sputtering
Process for Li Ion Batteries”, Jpn. J. Appl. Phys., 61 (2021), SA1002.

2

Research Division of Materials Joining Process, Dep. of Manufacturing Process
Research summary
The main research objectives are to analyze the mechanisms of material process including joining
by various energy sources, and to develop advanced processes with high efficiency and highproductivity. Especially, for a micro joining process in electronics packaging, the creation of thefunctional joint materials, the development of novel advanced micro processes by various energy
sources, and the enhancement of the highly reliable joints based on the control of interfacial
structure and performance are performed to produce micro joints with superb functionality andhigh reliability. In addition, we are resolving the joining problems of newly-developed materials.
And we are aiming to develop new appropriate material processes for these materials.

Research subjects(1) Development and evaluation of advanced micro joining process(2) Elucidation of micro joining phenomena and defect suppression(3) Control and analysis of microstructure at soldered interface(4) Development of eco-friendly fluxless soldering process using a reducing atmosphere(5) Formation of high heat-resistance joint using three-dimensional nanostructure

Micro joining process using a transient liquid phase bonding (TLPB)
method(a)TLPB process and microstructure of joint using Sn-coated Cu particles(b)TLPB process and microstructure of joint using Sn-Bi solder particles +Cu particles
Microstructure of sintered joint using Ag nanoparticle paste(a)Serial sectioning of Ag sintered layer by FIB/SEM system(b)Reconstructed 3D image of Ag sintered layer(c)Reconstructed 3D pore distribution into Ag sintered layer

Major Papers

Z. Jin, Y.-A. Shen, F. Huo, Y. C .Chan and H. Nishikawa, “Electromigration Behavior of Silver Thin Film
Fabricated by Electron-Beam Physical Vapor Deposition”, J. Mater. Sci., 56 (2021), 9769-9779.
Y. Hirata, C.-H. Yang, S.-K. Lin and H. Nishikawa, “Improvements in Mechanical Properties of Sn-Bi Alloys withAddition of Zn and In”, Mater. Sci. Eng. A., 813 (2021), 141131.
Z. Jin, Y.-A. Shen, Y. Zuo, Y. C .Chan, S. H. Mannan and H. Nishikawa, “Observation of Void Formation Patternsin SnAg Films Undergoing Electromigration and Simulation Using Random Walk Methods”, Sci. Rep., 11(2021), 8668.
F. Hou, Z. Jin, D. L. Han, K. Zhang and H. Nishikawa, “Interface Design and the Strengthening-Ductility
Behavior of Tetra-Needle-Like ZnO Whisker Reinforced Sn1.0Ag0.5Cu Composite Solders Prepared with
Ultrasonic Agitation”, Mater. Des., 210 (2021), 110038.
Y.-J. Kim, B.-H. Park, S. K. Hyun and H. Nishikawa, “The Influence of Porosity and Pore Shape on the Thermal
Conductivity of Silver Sintered Joint for Die Attach”, Mater. Today Commun., 29 (2021), 102772.

3

Research Division of Materials Joining Process, Dep. of Laser Materials Processing
Research summary
Fundamental studies are performed concerning welding, joining, cutting, surface modification
and removal processing with laser beams, aimed at advanced fusion between laser science andproduction engineering. We focus on clarification of welding or joining mechanisms on the basis of
the visualization of material processing phenomena with high-speed optical observation or X-ray
transmission imaging techniques. Moreover, laser should be utilized with not only high thermal
efficiency but also physicochemical effects induced by interaction between light and material. Thus
we create innovative processes including laser direct joining of metal and plastic, put theseprocesses to practical use and disseminate achievements of our research to the world.

Research subjects(1) Development and evaluation of joining and welding processes for the advanced functional
materials(2) Development of additive manufacturing technologies with blue diode laser(3) Creation of new function by surface modification with laser(4) Fundamental studies on laser interaction with materials and fundamental studies of materials
processing utilizing laser

PMMA film surface after femtosecond laser irradiation.
(a) SEM image with periodic nanostructures oriented to thedirection perpendicular to the laser polarization vector (The periodof the periodic nanostructure is about 230nm) on PMMA film
surface.
(b) Fluorescence microscope image of cell cultivation test. Cells
adhered to the periodic nanostructures surface rather than baresurface.

Copper cladding using blue diode laser (a)Blue diodelaser (b) X ray observation of laser coating with blue
laser (c) Cross section image (d) Surface image of purecopper coating layer (e) 3D object of pure copper byBlue diode laser

Major Papers
Y. Sato, N. Shinohara, T. Arita, M. Mizutani, T. Ohkubo, H. Nakano and M. Tsukamoto, “In Situ X-Ray Observationof Keyhole Dynamics for Laser Beam Welding of Stainless Steel with 16 kW Disk Laser”,
J. Laser Appl., 33 (2021), 042043.
K. Takenaka, N. Shinohara, M. Hashida, M. Kusaba, H. Sakagami, Y. Sato, S. Masuno, T. Nagashima and M.
Tsukamoto, “Delay Times for Ablation Rate Suppression by Femtosecond Laser Irradiation with a Two-Color
Double-Pulse Beam” Appl. Phys. Lett., 119 (2021), 231603.
T. Pasang, B. Tavlovich, O. Yannay, B. Jackson, M. Fry, Y. Tao, C. Turangi, J.-C. Wang, C.-P. Jiang, Y. Sato,
M. Tsukamoto and W. Z. Misiolek, “Directionally-Dependent Mechanical Properties of Ti6Al4V Manufactured
by Electron Beam Melting (EBM) and Selective Laser Melting (SLM)”, Materials, 14, 13 (2021), 3603.
Y. Sato, K. Ono, K. Takenaka, K. Morimoto, Y. Funada, Y. Yamashita, T. Ohkubo, N. Abe and
M. Tsukamoto, “Fabrication of Pure Copper Rod by Multi-beam Laser Metal Deposition with Blue Diode Lasers”,
J. Laser Micro Nanoeng., 16, 3 (2021), 189-193.

4

Research Division of Materials Joining Mechanism, Dep. of Welding Mechanism
Research summary
Mechanisms controlling the joint performance of structural and functional materials, which obtainedby fusion welding, liquid-state/solid-state bonding, and solid-state bonding, are metallographicallycharacterized to establish a scientific basis to produce joint materials featuring superior performance.
The microstructures of the weld-deposited metal, the heat-affected zone of fusion-welded joints, andthe interfacial region of solid-state bounded joint are thoroughly investigated utilizing various methods
such as X-ray diffraction, electron-microscopy observation, elementary analysis, EBSP analysis, andnumerical modeling and simulation. Formation processes of the microstructures and their relation to
joint performance are discussed from the material scientific viewpoint.

Research subjects(1) Weld microstructure analyses of structural material such as steel(2) Bonding mechanism of solid-state joining of metals and ceramics, and its application to microstructural control(3) Application of welding and joining phenomena to development of advanced materials(4) Synthesis of new functional materials at welding and joining interface(5) Evaluation of the effect of microstructure on mechanical behavior of structural materials joints
400

(c)

300

(d)

W-rich layer

0.1

/ MPa

RS
AS

(b)

Stress ratio:(e)Stress amplitude,

(a)

200

50%UP
FSPed
As-welded

100
10000
104

100000105

1000000
106

Number of cycles to failure,

10000000
107(Cycles)

Welding-time variation of penetration shape change in thesimulated vibration assisted tandem-pulsed GMAW using
the Flow-3D commercial software in the presence of sinevibration parallel to the welding direction (250 Hz) and thesurface tension active elements.

Geometry modification and W-rich layer formation for weld
toe of high-strength low-alloy steel joints using friction stirprocessing (FSP) with spherical-tip WC tool, resulting in
fatigue strength improvement.

Designing high bending strength Nb/Cu and Ta/Cu clads
produced by explosive welding (EW) with high microhardness intermediate layers (ILs) at their interfaces.

Cracks observed in hydrogen charged weld metal after
slow strain rate tensile test (a), and numerical simulationof diffusible hydrogen concentration distribution in weld
metal (b).

Major Papers
T. Kakizaki, S. Koga, H. Yamamoto, Y. Mikami, K. Ito, K. Yamazaki, S. Sasakura and H. Watanabe, “Microstructure
Features and Formation Mechanism in a Newly Developed Electroslag Welding”, Weld. World (2021), 1-12.
H. Yamamoto, Y. Imagawa, K. Ito, K. Chen and L. Zhang, “Alloying a Topmost Steel-Plate Layer with WC-toolConstituent Elements during Friction Stir Processing”, J. Manuf. Process., 69 (2021), 311-319.
J. D. Kulkarni, S. B. Goka, P. K. Parchuri, H. Yamamoto, K. Ito and S. Simhambhatla, “Microstructure Evolution
along Build Direction for Thin-Wall Components Fabricated with Wire-Direct Energy Deposition”, Rapid
Prototyping J., 27, 7 (2021), 1289-1301.
P. K. Parchuri, S. Kotegawa, K. Ito, H. Yamamoto, A. Mori, S. Tanaka and K. Hokamoto, “Characterization of
Shock Wave Damages in Explosion Welded Mo/Cu Clads”, Metals, 11, 3 (2021), 501.

5

Research Division of Materials Joining Mechanism, Dep. of Joint Interface
Structure and Formation Mechanism
Research summary
In this department, based on the elucidation of the various phenomena at the joint interfaces offerrous, nonferrous, non-metal materials at both macroscopic and microscopic levels, the interface
formation mechanisms during various joining processes are clarified to create new interface control
methods.
In addition, novel welding and modification processes are developed, mainly based on fusion
welding methods and friction welding methods such as the friction stir welding, rotary friction
welding and linear friction welding methods, which is the core of the fundamental technologies
having a great potential to produce new values. These developments are going to be used andfocused simultaneously in our society in order to create a new research field and elevate thecontinuous growth of industrial competitiveness of our country.

Research subjects(1) Control of interface and elucidation of formation mechanism during friction welding (FSW,Friction welding, Linear friction welding)(2) Development of novel joining and modification processes(3) Elucidation of formation mechanism of weld interface and molten pool
(4) Analysis of joint interface structure(5) Control of solid-liquid interface formation

Three-dimensional visualization of the material flow using a W
tracer during the FSW.

SEM microstructures and Vickers hardness along the central
axis of LFWed joints.

Major Papers
Y.-S. Lim, Y. Morisada, H. Liu and H. Fujii, “Ti-6Al-4V/SUS316L Dissimilar Joints with Ultrahigh Joint Efficiency
Fabricated by a Novel Pressure-Controlled Joule Heat Forge Welding Method”, J. Mater. Process. Technol., 298(2021), 117283.
X. Wang, Y. Morisada and H. Fujii, “Flat Friction Stir Spot Welding of Low Carbon Steel by Double Side
Adjustable Tools”, J. Mater. Sci. Technol., 66 (2021), 1-9.
Z. Zeng, M. Zhou, P. Lynche, F. Mompiou, Q. Gu, M. Esmaily, Y. Yan, Y. Qiu, S. Xu, H. Fujii, C. Davies, J.-F. Nie and
N. Birbilis, “Deformation Modes during Room Temperature Tension of Fine-Grained Pure Magnesium”, Acta
Mater., 206 (2021), 116648.
J.-W. Choi, Y. Aoki, K. Ushioda and H. Fujii, “Linear Friction Welding of Ti-6Al-4V Alloy Fabricated below βPhase Transformation Temperature”, Scr. Mater., 191 (2021), 12-16.
Z. Wu, T. Nagira, K. Ushioda, G. Miyamoto and H. Fujii, “Microstructures and Tensile Properties of Friction Stir
Welded 0.2%C-Si-Mn Steel”, Mater. Sci. Eng. A., 799 (2021), 140068.

6

Research Division of Materials Joining Mechanism, Dep. of Composite Materials
Processing
Research summary
From a viewpoint of the energy saving and environmental problem solutions, the research fieldsof this department focus on both of the effective reuse of resources and energy including renewable
ones and reduction of life hazardous materials and air pollutions. In particular, by controlling theinterfacial mechanics and high-performance of materials, atomic/nano-scale composite materials
and processing designs for the environmentally benign are established, and applied to innovative
industrial development.

Research subjects(1) Powder based titanium materials with static and dynamic high-strength & ductility(2) Core-shell structured Ti-N composite powders via solid-gas reaction(3) Selective laser melted titanium alloys strengthened by solid-solution and nano-dispersoids(4) Nano-carbon materials reinforced metal matrix composites via local interface mechanics(5) Direct bonding of plastic materials to metals by molecular structure and fine bubbles control(6) Ni-rich TiNi shape memory alloys with nano-precipitation and application to medical devices(7) Local surface potential difference in CNTs reinforced metal materials and its applications

SEM-EDS analysis on core-shell structured Ti-N
composite powder with two-layers shell (N-richestshell I & N-rich shell II) and N-depleted core III heat
treated at 1273 K in nitrogen gas atmosphere.

Tensile properties of hot extruded Ti-4%Fe powder
alloys with W solutes and CP-Ti material including
IPF-maps on α-Ti of Ti-4%Fe and Ti-4%Fe-3%W.

Major Papers
D. Pan, S. Li, L. Liu, X. Zhang, B. Li, B. Chen, M. Chu, X. Hou, Z. Sun, J. Umeda and K. Kondoh, “Enhanced Strengthand Ductility of Nano-TiBw-Reinforced Titanium Matrix Composites Fabricated by Electron Beam Powder Bed
Fusion Using Ti6Al4V-TiBw Composite Powder”, Addit. Manuf., 50 (2021), 102519.
J. Umeda, T. Tanaka, T. Teramae, S. Kariya, J. Fujita, H. Nishikawa, Y. Shibutani, J. Shen and K. Kondoh,“Microstructures Analysis and Quantitative Strengthening Evaluation of Powder Metallurgy Ti-Fe Binary
Extruded Alloys with (α+β)-dual-phase”, Mater. Sci. Eng. A., 803 (2021), 140708.
A. Issariyapat, T. Song, P. Visuttipitukul, J. Umeda, Q. Ma and K. Kondoh, “Development of Core-ShellStructured Ti-(N) Powders for Additive Manufacturing and Comparison of Tensile Properties of the Additively
Manufactured and Spark-Plasma-Sintered Ti-N Alloys”, Adv. Powder Technol., 32, 7 (2021), 2379-2389.
T. Song, T. Dong, S. L. Lu, K. Kondoh, R. Das, M. Brandt and Q. Ma, “Simulation-informed Laser Metal Powder
Deposition of Ti-6Al-4V with Ultrafine α-β Lamellar Structures for Desired Tensile Properties”, Addit. Manuf.,
46 (2021), 102139.
A. Bahador, J. Umeda, R. Yamanoglu, A. Amrin, A. Alhazaa and K. Kondoh, “Ultrafine-grain Formation and
Improved Mechanical Properties of Novel Extruded Ti-Fe-W Alloys with Complete Solid Solution of Tungsten”,
J. Alloy. Compd, 875 (2021), 160031.

7

Research Division of Materials Joining Assessment, Dep. of Joining Mechanics andAnalyses
Research summary
The mathematical and numerical modelling is a basis of the Artificial Intelligent (AI) and one of themost efficient approaches to look into various detail phenomena involved in joining & welding &additive manufacturing processes. In addition, assessment to residual stress/strain and strength ofvarious types of joints between dissimilar materials is being studied through both the advanced
measuring technology and numerical computational approaches.

Research subjects(1) Computational modelling of nonlinear thermo-mechanical-metallurgical phenomena in multimaterials additive manufacturing, fusion welding and solid-state joining.
(2) Artificial Intelligent (AI) and digital twin for full manufacturing processes including metal forming,
joining, welding and assembling of structures.
(3) Integration of FEM and Field Measurement (M-FEM) using DIC in various tests for identificationof internal residual stress and fracture criteria of materials and various types of joints.

Major Papers
S. Ren, Y. Ma, N. Ma, Q. Chen and H. Wu, “Digital Twin for the Transient Temperature Prediction during Coaxial
One-Side Resistance Spot Welding of Al5052/CFRP”, J. Manuf. Sci. Eng, 144, 3 (2021), 1-8.
Y. Ma, Y. Yu, P. Geng, R. Ihara, K. Maeda, R. Suzuki, T. Suga and N. Ma, “Fracture Modeling of Resistance Spot
Welded Ultra-High Strength Steel Considering the Effect of Pre-Crack”, Mater. Des., 210 (2021), 110075.
Q. Wang, N. Ma, X.-T. Luo and C.-J. Li, “Towards Better Understanding Supersonic Impact-Bonding Behavior ofCold Sprayed 6061-T6 Aluminum Alloy Based on a High-Accuracy Material Model”, Addit. Manuf., 48 (2021),
1-11.
P. Geng, N. Ma, H. Ma, Y. Ma, K. Murakami, H. Liu, Y. Aoki and H. Fujii, “Flat Friction Spot Joining of AluminumAlloy to Carbon Fiber Reinforced Polymer Sheets: Experiment and Simulation”, J. Mater. Sci. Technol., 107(2021), 266-289.
K. Saito, T. Hirashima, N. Ma and H. Murakawa, “Characteristic-tensor Method for Efficient Estimation of StressIntensity Factors of Three-Dimensional Cracks”, Eng. Fract. Mech., 257, 11 (2021), 1-21.

8

Research Division of Materials Joining Assessment, Dep. of Joining Design and
Dependability
Research summary
In evaluating the reliability of the structures, this department investigates not only theconventional optimization for the safety and the durability in constructing steel structures but also
the reliability (Dependability) including the maintenance, the repair/reinforcement and theevaluation of lifetime considering cultural science and social science. Moreover, making researcheson the procedure to safely break up the structures completing the lifetime, the circulating loop in
which the members or the units are reused is concretized.
The department purposes to establish the evaluating methods to satisfy the high accuracy andthe high quality in cutting, processing and assemblage for “products of steel structures” based on
the dependability in the circulating loop containing the maintenance, the repair/reinforcement andthe evaluation of lifetime.

Research subjects(1) Soundness diagnosis of structural members and joints(2) Development of simulation technology of mechanical behavior(3) Development of fatigue life assessment technology (crack nucleation, propagation)(4) Development of measurement technology of deformation and crack(5) Development of life extension technology for structural members and joints(6) Assessment of Weldability and Quality of New and Functionally Graded Materials

Development of life extension
technology for steel structures

Numerical simulation of mechanicalfatigue phenomena

Ultra-dynamic and cyclic loading test for large
structures
Soundness diagnosis of structure members by
ultra-dynamic structural testing system（Speed 1,200mm/sec, Load 1,200kN, Stroke
500mm）

Major Papers
R. Fincato and S. Tsutsumi, “Coupled Elasto-Viscoplastic and Damage Model Accounting for Plastic Anisotropy
and Damage Evolution Dependent on Loading Conditions”, Comput. Methods Appl. Mech. Engrg.,, 387 (2021),
114165.
T. Ozawa, H. Kosuge, Y. Mikami and T. Kawabata, “Typical Local Compression Effect on Crack Front
Straightness and Fracture Toughness”, Weld. World, 65 (2021), 1777-1790.
T. Kawabata, H. Kosuge, T. Ozawa and Y. Mikami , “Simplified Prediction Method of Stress Intensity Factor in
Mid-Thick Plane in 3D Cracked Body and Its Difference from 2D Handbook Formula”, J. Test. Eval., 50, 1 (2021)

9

Research Division of Materials Joining Assessment, Dep. of Reliability Evaluation& Simulation
Research summary
Development of innovative manufacturing technology is required to manufacture highperformance machine products and structures of the next-generation. Department of Reliability
Evaluation & Simulation conducts research and education for elucidation and control of the factors
on weldment properties by high accurate evaluation based on material science and engineering. In
order to create innovative and attractive technique of welding & Joining as a final aim, ourdepartment are working on elucidation of metallurgical phenomenon such as solidification andtransformation, and on developing the predication method for the microstructures and theproperties of weldments.

Research subjects(1) Elucidation for mechanism of microstructural evolution during solidification and solid state inweld metal of stainless steels and carbon steels(2) Investigation of controlling factor of hot cracking susceptibility and establishment of theprediction technology of the cracking during welding and additive manufacturing(3) Clarification of influential factors of corrosion resistance of stainless steel welds(4) Analysis of solidification/transformation behavior and accurate evaluation of hot cracking
susceptibility by using In-situ observation technique(5) Development of improvement technology of properties of weld metal by microstructural control

Evaluation and analysis of hot cracking susceptibility test

Control of Lathy ferrite formation in weld metal of austenitic stainless steel
High temperature in-situ observation bylaser microscope

Major Papers

R. Homma, K. Kadoi and H. Inoue, “Effects of Ti and Al on the Formation of Intragranular Ferrites in the UltraLow-Oxygen Si-Mn Weld Metals of Low-Carbon Steel”, Mater. Today Commun., 29 (2021), 102963.
C. Cheng, K. Kadoi, H. Fujii, K. Ushioda and H. Inoue, “Improved Strength and Ductility Balance of Mediumcarbon Steel with Chromium and Titanium Fabricated by Friction Stir Welding Process”,
Mater. Sci. Eng. A., 803 (2021), 140689.
M. Sakata, K. Kadoi and H. Inoue, “Acceleration of 475°C Embrittlement in Weld Metal of 22 mass% Cr-duplex
Stainless Steel”, Mater. Today Commun., 29 (2021), 102800.
Z. Zhang, Y. Zhao, J. Shan, A. Wu, Y. Sato, K. Kadoi, H. Inoue, H. Gu and X. Tang, “The Role of Shot Peening on
Liquation Cracking in Laser Cladding of K447A Nickel Superalloy Powders Over Its Non-weldable Cast
Structure”, Mater. Sci. Eng. A., 823 (2021), 141678.

10

Smart Processing Research Center, Dep. of Smart Coating Processing
Research summary
This department deals with smart coating processing based on nanoparticle processing, whichleads to advanced manufacturing technology as well as safe, security, environmental and energy
issues. By making use of new properties of nanoparticles, nanoporous or multi-component films
can be created without any heat assistance. Nano and microscale design of particles will lead tohigh reliability and functional coating films with various kinds of coating processes. Smart coatingon the surface of particles will make key materials for new areas such as DDS (Drug Delivery System)
or Fuel Cells.

Research subjects(1) Development of solid-state processing in water vapor for functional fine-particle synthesis(2) Low temperature synthesis of composite oxide nanoparticles by mechanochemical method(3) Development of Li ion battery electrodes by controlling their composite structure(4) Wet processing for composite nanoparticles and their applications for fuel cells(5) Development of fuel cell electrodes for PEFC and SOFC
(6) Development of low thermal conductivity materials using composite particles(7) Development of 3D direct-assembly process of nanoparticles(8) New recycling process of composite materials by bonding and disassembling of their interface(a) Fabrication of cathode particle with gradient composition
for Li ion battery by dry processing(b) Fabrication of both cathode and anode nanostructure
for SOFC by wet processing

Major Papers
T. Kozawa, K. Fukuyama, K. Kushimoto, S. Ishihara, J. Kano, A. Kondo and M. Naito, “Effect of Ball Collision
Direction on a Wet Mechanochemical Reaction”, Sci. Rep., 11 (2021), 210.
T. Kozawa, C. Zhang, T. Uchikoshi, K. Fukuyama, A. Kondo and M. Naito, “Solution-Based Approach for theContinuous Fabrication of Thin Lithium-Ion Battery Electrodes by Wet Mechanochemical Synthesis andElectrophoretic Deposition”, Adv. Eng. Mater., 23 (2021), 2100524.
A. Kondo, T. Kozawa, T. Ishikawa and M. Naito, “Rapid Synthesis of YAG Phosphor by Facile Mechanical
Method”, Int. J. Appl. Ceram. Technol. 19, (2021) 681-687.
K. Kanai, S. Ozawa, T. Kozawa and M. Naito, “Low Temperature Synthesis of Ga-doped Li7La3Zr2O12 GarnetType Solid Electrolyte by Mechanical Method”, Adv. Powder Technol., 32, 10 (2021), 3860-3868.

11

Smart Processing Research Center, Dep. of Nano/Micro Structure Control
Research summary
Additive Manufacturing (AM) was newly developed as novel process to create three dimensional(3D) structures through two dimensional (2D) layer laminations. Metal and ceramic nanoparticles
were dispersed into resin paste to use for our original process. In lithography techniques, a highpower laser beam was scanned on the spread paste for 2D layer drawing and 3D structure forming.
In deposition techniques, the paste was introduced into high temperature plasma or gas flame for
2D cladding and 3D patterning. Created electric devices, biological implants and energy modules
will contribute to sustainable development.

Research subjects(1) Stereolithographic Additive Manufacturing of Metal and Ceramic Parts Using Nanoparticles
Pastes(2) Structural Fabrication of Photonic Crystals with Diamond Structures for Terahertz Wave Control(3) Modulation of Micro Porous Structures in Biological Ceramic Implants for Artificial Metabolism(4) Manufacturing of Micro Metal Lattices for Effective Controls of Heat Flow and Stress Distributions(5) Advance Development of Thermal Nanoparticles Spraying for Additive Manufacturing Technique(6) Fine Separator Formation in Solid Oxide Fuel Cells by Using Thermal Nanoparticles Spraying(7) Fine Ceramic Coating with Thermal Conductivity and Corrosion Resistance for Heat Exchanger
Tubes(8) Layer Laminations by Fine Particles Spraying and Sintering to Create Functionally Graded
Structures

Laser Scanning Stereolithography of Additive
Manufacturing to Fabricate Bulky Metal andCeramic Components with Micro Geometric
Patterns

Thermal Spraying Using Fine Particle Pastes toLaminate Metal and Ceramic Coated Layers with
Functional Nano/Micro Structures

Major Papers
S. Kirihara, “Systematic Compounding of Ceramic Pastes in Stereolithographic Additive Manufacturing”,
Materials, 14, 22 (2021), 1895611-1895945.
S. Kirihara, “Stereolithographic Additive Manufacturing of Acoustic Devices with Spatially Modulated Cavities”
Int. J. Appl. Ceram. Technol. (2021), 13925-1-13925-8.
S. Kirihara, “Stereolithographic Additive Manufacturing of Ceramic Components with Functionally Modulated
Structures” Open Ceramics, 5, 100068 (2021), 1-8.
M. Takahash and S. Kirihara, “Stereolithographic Additive Manufacturing of Zirconia Electrodes with Dendritic
Patterns for Aluminum Smelting” Appl. Sci., 11, 17 (2021), 8168.

12

Smart Processing Research Center, Dep. of Smart Green Processing
Research summary
As environmental and energy problems become more serious on a global scale, we are working
on research and development of material process technologies and environment-friendly materials
that will greatly reduce the environmental load. We recently focus on inorganic nano- and microparticles as building blocks for functional materials and devices, and we develop low-environmentalload methodologies for their syntheses, film formation, bonding, integration, and 3D printing.
Furthermore, we are proceeding with research and development of environment and energy relatedmaterials and devices using our new process technology.

Research subjects(1) Eco-friendly solution-based syntheses of nano- and micro-particles(2) Eco-friendly assemblies of nano- and micro-particles(3) Development of Environment friendly materials(4) Development of environmental monitoring devices(Top) Reductant free synthesis of noble metal nanoparticles (NPs)(Top) Direct Ink Writing of Nanoparticle-Ink(Middle) Shape-controlled synthesis without any additives(Left-bottom) Visible-light induced patterning of metal NPs(Bottom) Reductant-free coating of noble metal NPs(Right-bottom) Self-assembly of magnetic NPs under magnetic field

Major Papers
Z. Dai, X.-Z. Song, F. Tang, X. Kang, S. Liu, H. Abe, S. Ohara and Z. Tan, “Preparation of 2D Ultrathin Titanium
Dioxide Nanosheets with Enhanced Visible-Light Photocatalytic Activity”, Micro Nano Lett., 16 (2021), 313-318.
L. Zhou, F. Li, J.-X. Liu, S.-K. Sun, Y. Liang and G.-J. Zhang, “High-Entropy A2B2O7-type Oxide Ceramics: A
Potential Immobilising Matrix for High-Level Radioactive Waste”, J. Hazard. Mater., 415 (2021), 125596.
C. T. Thanh, N. H. Binh, P. N. D. Duoc, V. T. Thu, P. V. Trinh, N. N. Anh, N. V. Tu, N. V. Tuyen, N. V. Quynh, V. C. Tu,
B. T. P. Thao, P. D. Thang, H. Abe and N. V. Chuc, “Electrochemical Sensor Based on Reduced Graphene
Oxide/Double-Walled Carbon Nanotubes/Octahedral Fe3O4/Chitosan Composite for Glyphosate Detection”,
Bull. Environ. Contam. Toxicol. (2021)
H. Ishitsuka, Y. Nakamua, H. Abe and Y. Suzuki, “Synthesis, Microstructure and Electrochemical Characterizationof NiMn2O4 Nanoparticles via a Simple Citric Acid Method”, J. Ceram. Soc. Jpn., 129, 6 (2021), 332-336.
T. Naka, T. Nakane, S. Ishii, M. Nakayama, A. Ohmura, F. Ishikawa, A. De, H. Abe and T. Uchikoshi,“Cluster Glass Transition and Relaxation in the Random Spinel CoGa2O4”, Phys. Rev. B., 103 (2021), 224408.

13

Hitachi Zosen Advanced Welding Technology Joint Research Chairs
Research summary
This research chair has been developing welding technology to realize international competitive
manufacturing for wide range of thick-plate structures by fusing advanced technologies owned by
JWRI and Hitachi Zosen Corporation. It aims to realize smart manufacturing factory.
The high power laser technology for thick plate welding developed in this chair has reached apractical level at the factory. Now, we are developing the foundation of the digital welding
technology required at next generation like process simulation technology and waveform
controlled the high heat input digital submerged arc welding technology.
Furthermore, as a new development of laser welding technology, we promote the developmentof three dimensional overlay welding technology that realizes high wear resistance by utilizing
diode laser etc.

Research subjects(1) Development of Laser Welding Technology for Thick Plate(2) Development of High Efficiency SAW Technology(3) Development of Overlay Welding Technology using Additive Manufacturing(4) Smart Welding & Manufacturing System(a)Overlay material

Laser Multi-layer Welding Technology for Thick
Plate(a) Schematic diagram of welding process(b) Schematic diagram of gap sensing system(c) Cross section of weld

Base metal(b)Overlay Welding Technology using Additive Manufacturing(a) Schematic diagram of welding process(b) Cross section of weld

Welding direction

Hole

Flux

CavitySolidified flux

Solidified slag

Molten flux

Molten slag flow

DropletPore

Weld metal

120 mmWelding wire

Arc

Weld pool flow

Base metal

Major Papers

High Efficiency SAW

SAW Phenomena

Cross section of weld

Y. Abe, T. Fujimoto, M. Nakatani, H. Komen, M. Shigeta and M. Tanaka, “High Speed X-ray Observation of
Digital Controlled Submerged Arc Welding Phenomena”, Sci. Technol. Weld. Join., 26, 4 (2021), 332-340.
H. Komen, M. Shigeta, M. Tanaka, Y. Abe, T. Fujimoto, M. Nakatani and A. B. Murphy, “Numerical Investigationof Heat Transfer During Submerged Arc Welding Phenomena by Coupled DEM-ISPH Simulation”, Int. J. Heat
Mass Transf., 171 (2021), 121062.
U. K. Mohanty, A. Sharma, Y. Abe, T. Fujimoto, M. Nakatani, A. Kitagawa, M. Tanaka and T. Suga, “Thermal
Modelling of Alternating Current Square Waveform Arc Welding”, Case Stud. Therm. Eng., 25 (2021), 100885.

14

Osaka Fuji "Advanced Functional Processing" Joint Research Chairs
Research summary
This research chair aims to develop advanced functional processing technics by combining laser
processing technology and materials knowledge in JWRI and advanced functional manufacturing
technologies of Osaka Fuji Corporation.
The main purpose is to develop the surface functioning of various materials by laser cladding
method, low weldability materials. Finally, these fruits are applied to the next generation of
manufacturing technology for various industrial fields.

Research subjects(1) Development of highly functional surface by laser cladding(2) Development of functional surfaces of small or thin parts(3) Development of hybrid technology of laser and conventional surfacing technologies(4) Fundamental research of laser additive manufacturing technology

Dynamic observation of molten pool behavior for analysis ofblow halls formation using high-speed camera

Example of laser cladding on edge of screw

Experimental apparatus for laser cladding

Wide, flat cladding layer which was provided by beam control

Major Papers
Y. Sato, K. Ono, K. Takenaka, K. Morimoto, Y. Funada, Y. Yamashita, T. Ohkubo, N. Abe and
M. Tsukamoto, “Fabrication of Pure Copper Rod by Multi-beam Laser Metal Deposition with Blue Diode Lasers”,
J. Laser Micro Nanoeng., 16, 3 (2021), 189-193.
Y. Sato, N. Shinohara, T. Arita, M. Mizutani, T. Ohkubo, H. Nakano and M. Tsukamoto, “In Situ X-Ray Observationof Keyhole Dynamics for Laser Beam Welding of Stainless Steel with 16 kW Disk Laser”,
J. Laser Appl., 33 (2021), 042043.
K. Ono, Y. Sato, Y. Takazawa, Y. Morimoto, K. Takenaka, Y. Yamashita, Y. Funada, N. Abe and
M. Tsukamoto, “Development of High Intensity Multibeam Laser Metal Deposition System with Blue Diode
Lasers for Additively Manufacturing of Copper Rod”, J. Laser Appl., 33 (2021), 042014.
Y. Sato, K. Ono, K. Takenaka, K. Morimoto, Y. Funada, Y. Yamashita, T. Ohkubo, N. Abe and
M. Tsukamoto, “Fabrication of Pure Copper Rod by Multi-Beam Laser Metal Deposition with Blue Diode
Lasers”, Proc. LPM2021, WEB (2021.6.8-11), #21-039-1-#21-039-5.

15

Design & Engineering by Joint Inverse Innovation for Materials Architecture− DEJI2MA Project −Research summary
The Project, Design & Engineering by Joint Inverse Innovation for Materials Architecture - DEJI2MA
Project -, has started from 2021 as inter-university cooperative research project (Osaka Univ.,
Tohoku Univ., Tokyo Institute of Tech., Nagoya Univ., Tokyo Medical and Dental Univ., Waseda Univ.).
This project promotes the joint research for development of Inverse Innovation Materials forapplications in such as environmental, energy and biomedical fields through the inter-university
cooperative researches by the 6 research institutes at 6 universities.

Research subjects(1) Environmental and Energy Materials(2) Biomedical and Healthcare Materials(3) Information and Communication Materials

6 universities cooperative research project(1) Joining and Welding Research Institute, Osaka Univ.
(2) Institute for Materials Research, Tohoku Univ.
(3) Laboratory for Materials and Structures, Tokyo Institute of Tech.
(4) Institute of Materials and Systems for Sustainability, Nagoya Univ.
(5) Institute of Biomaterials and Bioengineering, Tokyo Medical and Dental Univ.
(6) Research Organization for Nano & Life Innovation, Waseda Univ.

Research topics(1) Synthesis and integration of ceria
nanocubes towards environmental andenergy applications(2) Synthesis and coating of titan oxide
nanocrystals
towards
biomedical
applications

国際・産学連携インヴァースイノベーション材料創出プロジェクト
DEJI2MA: Design & Engineering by Joint Inverse Innovation for Materials Architecture

社会の出島
アドバイザリーボード（産官学からの委員）

社会的要求（ニーズ）を起点とする新規研究課題

イン
六研コンソーシアム（企業会員、６研研究者）
ヴァ
企業
バイオ・医療機器 ー
材料分野
ス
大学
イ
ノ
国・
環境・エネルギー ベ
地域
材料分野
ー
市民
シ
ョ
情報通信
材料分野
ン
海外

運営評価委員会（産官学からの委員）

共共拠点
共同研究員

東北大金研

東医歯大生材研多様機能金属材
料設計・開発医療マテリアル臨床

国際共共拠点共同研究員

出島

マルチ出島を通じた

人と知の循環出島

設備の共同利用
共共拠点
共同研究員

共共拠点
共同研究員

阪大接合研 課題解決
マテリアル・ 出島システム融合コア出島
課題設計（６研URA)

名大未来研
出島 グリーンマテリアル
人材育成

知のネットワーク・自由に出島間を渡航

クロス
・研究者道場プラットフォーム
出島 アポイントメント 出島

東工大フロ研

早大ナノライフ

多様機能無機材料設計・開発

構造材料設計エレクトロニクス融合

阪大接合研
東京分室設置共共拠点
共同研究員「イノベーション」のスピード創出

Major Papers

Cooperation system of the six research institutes at six universities

K. Yamamoto, K. Sato, M. Matsuda, M. Ozawa, and S. Ohara, “Anomalous Low-Temperature Sintering of a Solid
Electrolyte Thin Film of Tailor-Made Nanocrystals on a Porous Cathode Support for Low-Temperature Solid
Oxide Fuel Cells”, Ceram. Int., 47, (2021), 15939-15946.
M. Ozawa, K. Higuchi, K. Nakamura, M. Hattori, S. Ohara, and S. Arai, “In situ Observation of Catalytic CeO2Nanocube (100) Surface with Carbon Contamination by Environmental TEM: A Model for Soot Combustion”,
Jpn. J. Appl. Phys., 60, (2021), SAAC04-1-6.
Z. Dai, X.-Z. Song, F. Tang, X. Kang, S. Liu, H. Abe, S. Ohara, and Z. Tan, “Preparation of 2D Ultrathin Titanium
Dioxide Nanosheets with Enhanced Visible-light Photocatalytic Activity”, Micro Nano Lett., 16, (2021), 313-318.

16

Center to Create Research and Educational Hubs for Innovative Manufacturing in
Asia
Summary
From FY 2013-FY 2017, the project called “Center for the Project to Create Research and
Educational Hubs for Innovative Manufacturing in Asia” were implemented to establish new joining
and welding technologies, to create research networks, and to cultivate global leaders in the region.
Since FY 2018 namely the second phase, based on the research network established throughformer activities, the project has been continued to strengthen and obtain higher international
competency both in institution wide and in university wide through high quality international
collaborative research achieved by having organic cooperation with ASEAN Campus Programme
and with Global Knowledge Partners promoted by Osaka University.
As in detail, two pillars are set as follows: 1) Strengthen International Collaborative Research:
Increase number of co-authored papers by implementing international collaborative research withoverseas universities, establish international joint laboratory, 2) Conduct practical Global Leader
Training: Implement Inbound & Outbound Coupling Internship (CIS) takes place both overseas anddomestic which is composed of students from different majors and different cultures.
From FY 2020, the CIS starts to award 2 credits for participants. Due to the COVID-19 situation, allactivities for the CIS in FY 2021 had been implemented by online, as in FY2020, providing a new
type of opportunity for interaction and learnings.

Activities(1) Strengthen International Collaborative Research: Increase number of co-authored papers byimplementing international collaborative research, establish international joint laboratory(2) Conduct practical Global Leader Training: Implement Inbound & Outbound Coupling Internship(CIS) both overseas and domestic which is composed of students from different majors anddifferent cultures.
Table.1 Some major international joint research topics in FY 2021 (Excerpt)
Partner
Xi'an University of Technology: China,
King Saud University: Kingdom of
Saudi Arabia
Shanghai Jiao Tong University: China
Shanghai Jiao Tong University: China
National Cheng Kung University:
Taiwan, Hanoi University of Scienceand Technology: Vietnam

Research Topics
Development and Quantification of Strengthening Model for TiC Nano-Precipitation
and Carbon-Solution Strengthened Titanium Laminated Composites
Development of Plasma-MIG Hybrid Welding Method
Strength Evaluation of Resistance Spot Welding
Search and Characterization of Low Melting Point Alloys for Low Temperature
Welding

Table.2 Some major papers issued in FY 2021 (Excerpt)
1
2
3
4
5

PapersA. Bahador, J. Umeda, R. Yamanoglu, A. Amrin, A. Alhazaa, K. Kondoh, Ultrafine-grain formation and improved mechanicalproperties of novel extruded Ti-Fe-W alloys with complete solid solution of tungsten, Journal of Alloys and Compounds,
vol. 875, (2021)
A. Bahador, A. Issariyapat, J. Umeda, R. Yamanoglu, C. Pruncu, A. Amrin, K. Kondoh, Strength–ductility balance of powder
metallurgy Ti–2Fe–2W alloy extruded at high-temperature, Journal of Materials Research and Technology, vol. 14, pp.
677-691 (2021).
Y. Ma, S. Niu, H. Liu, Y. Li, N. Ma, Microstructural evolution in friction self-piercing riveted aluminum alloy AA7075-T6 joints,
Journal of Materials Science and Technology, vol.82, pp.80-95 (2021)
Y. Ma, Y. Yu, P. Geng, R. Ihara, K. Maeda, R. Suzuki, T. Suga, N. Ma, Fracture modeling of resistance spot welded ultrahigh-strength steel considering the effect of liquid metal embrittlement crack, Materials and Design, vol. 210, (2021)
M. Teranishi, M. Katsumata,H. Nishikawa, K. Kondoh, M.Tanaka, The Effects of Career Education in Osaka University
Coupling Internship (Analysis of Practical Short-term Overseas Internship Reports), Journal of Global Competency
Education, vol.8 No.2, pp.1-12, (2021)

Table. 3 List of Online Coupling Internship in FY 2021
Partner Country

Thailand
Malaysia
VietnamIndonesia

Host Company

Partner University

OTC Daihen
IHI Aioi Workds
IHI Infrastructure Asia
Cilegon Fabricators

Kasetsart University
Universiti Malaya
Hanoi Univ. of Science and Technology
Indonesia University

17

CONTRIBUTIONS TO OTHER ORGANIZATIONS(January 2021 ~ December 2021)[Physics, Processes, Instruments & Measurements]

S. FUJIYAMA, M. SHIGETA and M. TANAKA
Comparison between Methods Measuring Arc
Efficiency of Gas Tungsten Arc Welding
Sci. Technol. Weld. Joining, 26, 5 (2021), 371-376.

M. TANAKA
Looking Ahead to the Post-Pandemic Times
J. Smart Process., 10, 1 (2021), 1 (in Japanese).
M. TANAKA, T. YAMADA, M. SHIGETA, H. KOMEN,
M. FUKAHORI and N. SAITO
Experimental Study on Effects of Gas-shielding in
Lap-fillet Arc Welding
Q. J. Jpn. Weld. Soc., 39, 1 (2021), 51-63 (inJapanese).

H. KOMEN, H. BABA, K. KADOTA, T. ERA, M. TANAKA and
H. TERASAKI
Investigation of Factors Influencing Buried SpaceFormation
inBuriedArc
WeldingbyTree-Dimensional Particle Simulation
J. Smart Process., 10, 3 (2021), 121-127 (inJapanese).

M. TANAKA
Introduction to Welding Process
Textbook for Summer School of Welding
Engineering in Winter Version, (2021), 1-28 (inJapanese).

M. TANAKA, F. MIYASAKA and N. MUKAI
Round-table-talk on the New Edition "Phenomenaof Welding Arcs"
Welding Technol., 69, 7 (2021), 141-143 (inJapanese).

H. BABA, H. KOMEN, T. IGARASHI, K. KADOTA, T. ERA,
H. TERASAKI and M. TANAKA
Stabilization of High-Current Buried-Arc Welding
Using Large Diameter Φ1.6mm Wire by
Low-Frequency Modulated Voltage Control
Q. J. Jpn. Weld. Soc., 39, 1 (2021), 75-86 (inJapanese).

M. TANAKA
2020 JWS Activities
J. Japan Welding Soc., 90, 5 (2021), 346-347 (inJapanese).
M. TANAKA
Introduction to Welding Process
Textbook for Summer School ofEngineering, (2021), 1-28 (in Japanese).

Y. LI, S. TIAN, C. WU and M. TANAKA
Experimental Sensing of Molten Flow Velocity, Weld
Pool and Keyhole Geometries in Ultrasonic-Assisted
Plasma Arc Welding
J. Manufacturing Processes, 64 (2021), 1412-1419.

Welding

H. BABA, D. MORI, T. ERA and M. TANAKA
Development of High-Current Buried-Arc Welding
System "D-Arc" for Thick-Plate-Materials
Welding Technol., 69, 8 (2021), 92-96 (inJapanese).

S. TIAN, L. WANG, C. WU and M. TANAKA
Influenceof
UltrasonicVibrationon
Keyholing/penetrating Capability in Plasma Arc
Welding with Controlled Pulse Waveform
Weld. World, 65, 4 (2021), 1107-1117.

A. SHARMA, U. K. MOHANTY, M. TANAKA and T. SUGA
Mechanism of Gap Bridgeability in Lap-Fillet
Laser-Arc Hybrid Welding
Laser Manuf. Materi. Process., 8 (2021), 355-371.

M. TANAKA
Visualization
andPredictionsofWelding
Phenomena for Smart Arc Welding Process
Proc. 1st Okinawa-Int. Conf. on Welding and Allied
Technology (OIC-WA2021), (2021), 16-23.

M. TANAKA
New Attractions of the IIW Produced by Revolutionof Annual Assembly
Welding Technol., 69, 10 (2021), 98-100 (inJapanese).

18

M. TANAKA
Introduction to Welding Technology
Textbook for HPI Technology Seminar, (2021),
125-163 (in Japanese).

H. KOMEN, T. SUGAI, M. SHIGETA, M. TANAKA, T. KATO,
Y. KITAMURA and T. SATO
Dross Formation Process During Gas Cutting Using
Three-Dimensional Particle Simulation
J. Smart Process., 10, 6 (2021), 373-381 (inJapanese).

Y. HIRATA, M. TANAKA and W. MIZUNUMA
Towards IIW2022 Tokyo with New Style International
Conference
J. Japan Welding Soc., 90, 8 (2021), 541-547 (inJapanese).

Y. YAMASHITA, M. SHIGETA, H. KOMEN and M. TANAKA
Asymmetric Abel Inversion in Imaging Spectroscopy
for Tilted TIG Arc Plasma
Q. J. Jpn. Weld. Soc., 39, 4 (2021), 233-240 (inJapanese).

K. YAMAZAKI, R. ASANO, Y. SAITO, M. SHIGETA and
M. TANAKA
Observation of Phenomena in the Slag Bath during
Electroslag Welding
Q. J. Jpn. Weld. Soc., 39, 4 (2021), 347-362 (inJapanese).

K. TANAKA, M. SHIGETA, H. KOMEN and M. TANAKA
Identification of Light Emitting Elements aroundTungsten Electrode during TIG Welding Using
Optical Emission Spectroscopy
Q. J. Jpn. Weld. Soc., 39, 4 (2021), 248-259 (inJapanese).

R. UENO, M. SHIGETA, M. TANAKA, R. TODA, Y. SAITO andK. YAMAZAKI
Numerical Study of Heat Transfer Process during
Electroslag Welding by Two-dimensional Particle
MethodQ. J. Jpn. Weld. Soc., 39, 4 (2021), 363-370 (inJapanese).

K. IIDA, M. SHIGETA, H. KOMEN and M. TANAKA
Experimental Investigation of Dominant Factors for
Droplet Ejection from Electrode during AC TIG
Welding
Q. J. Jpn. Weld. Soc., 39, 4 (2021), 260-266 (inJapanese).

J. XIANG, K. TANAKA, F. F. CHEN, M. SHIGETA, M. TANAKA
and A. B. MURPHY
Modelling and Measurements of Gas Tungsten Arc
Welding in Argon-Helium Mixtures with Metal
VapourWeld. World, 65 (2021), 767-783.

K. TATSUMI, K. TANAKA, H. KOMEN, M. TANAKA, M. NOMOTO,
K. WATANABE and T. KAMO
Identification of Dominant Factors Determining
Droplet Temperature in Gas Metal Arc Welding
Q. J. Jpn. Weld. Soc., 39, 4 (2021), 267-276 (inJapanese).

H. KOMEN, M. SHIGETA, M. TANAKA, Y. ABE, T. FUJIMOTO,
M. NAKATANI and A. B. MURPHY
Numerical Investigation of Heat Transfer during
Submerged Arc Welding Phenomena by Coupled
DEM-ISPH Simulation
Int. J. Heat Mass Transf., 171 (2021), 121062(15pages).

S. CHIKUCHI, M. SHIGETA, H. KOMEN and M. TANAKA
Particle Simulation of Nugget Formation Processduring Steel/aluminum Alloy Dissimilar Resistance
Spot Welding and Thickness Estimation ofIntermetallic Compounds
Q. J. Jpn. Weld. Soc., 39, 4 (2021), 371-378 (inJapanese).

K. TANAKA, M. SHIGETA, H. KOMEN and M. TANAKAElectrode Contamination Caused by Metal Vapour
Transport during Tungsten Inert Gas Welding
Sci. Technol. Weld. Joining, 26, 3 (2021), 258-263.

T. FUKAZAWA, K. TANAKA, H. KOMEN, M. SHIGETA, M.
TANAKA and A. B. MURPHY
Numerical Investigation for Dominant Factors in
Slag Transfer and Deposition Process during Metal
Active Gas Welding Using Incompressible Smoothed
Particle Hydrodynamics Method
Q. J. Jpn. Weld. Soc., 39, 4 (2021), 277-290 (inJapanese).

H. KOMEN, M. TANAKA, A. MURATA and T. MURATA
Numerical Simulation of Heat Source Characteristics
in Arc Spot Welding with Constricated Nozzle
Q. J. Jpn. Weld. Soc., 39, 2 (2021), 132-140 (inJapanese).

19

B. XU, S. CHEN, S. TASHIRO, F. JIANG and M. TANAKA
Physical Mechanism of Material Flow in Variable
Polarity Plasma Arc Keyhole Welding Revealed by in
Situ X-ray Imaging
Phys. Fluids, 33, 1 (2021), 017121-1-10.

S. TASHIRO, N. Q. TRINH, T. SUGA, N. MATSUDA,
N. TSURUMARU, T. MAEDA, R. TANAKA, S. NAKATSU, G. TSUJII,
H. V. BUI and M. TANAKA
Influence of Cross-Wind on CO2 Arc Welding of
Carbon Steel
Metals, 11 (2021), 1677.

R. A. E. ROSLAN, S. MAMAT, P. T. TEO, F. MOHAMAD,
S. GUDUR, Y. TOSHIFUMI, S. TASHIRO and M. TANAKA
Observation of Arc Behaviour in TIG/MIG Hybrid
Welding Process
IOP Conf. Ser. : Earth Environ. Sci., 596 (2021),
12025(7pp).

T.-H. NGUYEN, N. V. ANH, S. TASHIRO, T. L. QUY and
M. TANAKA
Elucidate Fluid Vortex in Plasma Arc Welding
Recent Advances in Manufacturing Engineering andProcesses, (2021), 79-86.

S. M. HONG, S. TASHIRO, H.-S. BANG and M. TANAKA
A Study on the Effect of Current Waveform on
Intermetallics Formation and the Weldability ofDissimilar Materials Welded Joints (AA5052 Alloy-GI
Steel) in AC Pulse GMAW
Metals, 11 (2021), 561.

S. TASHIRO, S. MIKI, A. B. MURPHY, M. TANAKA, Y. KISAKA,
F. KIMURA, T. SUWA and Y. TAKAHASHI
Influence of Groove on Metal Vapour Behavior and
Arc Characteristics in TIG Welding of HighManganese Stainless Steels
Plasma Chem. Plasma Process. 42 (2021) 229-245.

N. Q. TRINH, S. TASHIRO, K. TANAKA, T. SUGA, T. KAKIZAKI,K. YAMAZAKI, T. MORIMOTO, H. SHIMIZU, A. LERSVANICHKOOL,
A. B. MURPHY, H. V. BUI and M. TANAKA
Effects of Alkaline Elements on the Metal Transfer
Behavior in Metal Cored Arc Welding
J. Manufacturing Processes, 68 (2021), 1448-1457.

T. NAKASHIMA, Y. KISAKA, F. KIMURA, S. TASHIRO and
M. TANAKA
A Study on Reducing Oxygen Content in Weld
Metals for Narrow Groove GMA Welding with a
Local CO2 Adding Nozzle
Q. J. Jpn. Weld. Soc., 39, 4 (2021), 301-308 (inJapanese).

B. XU, S. TASHIRO, M. TANAKA, F. JIANG and S. CHEN
Physical Mechanisms of Fluid Flow and Joint
Inhomogeneity in Variable-Polarity Plasma Arc
Welding of Thick Aluminum Alloy Plates
Phys. Fluids, 33 (2021), 87103(13p).

J. HAYASHI, K. NAGAI, Y. HABU, Y. IKEBE, M. HIRAMATSU,
R. NARISHIGE, N. ITAGAKI, M. SHIRATANI, Y. SETSUHARA and
G. UCHIDA
Morphological Control of Nanostructured Ge Films
in High Ar-gas-pressure Plasma Sputtering Process
for Li Ion Batteries
JAPANESE JOURNAL OF APPLIED PHYSICS, 61(2021), SA1002.

B. XU, S. TASHIRO, M. TANAKA, F. JIANG and S. CHEN
Physical Mechanisms of Fluid Flow and Joint
Inhomogeneity in Variable-Polarity Plasma Arc
Welding of Thick Aluminum Alloy Plates
Phys. Fluids, 33 (2021), 87103(13p).

K. TAKENAKA and Y. SETSUHARA
Formation of Functional Oxide Thin Film by
Plasma-assisted Reactive Process Using Mist
J. Smart Process., 10, 1 (2021), 10-14 (in Japanese).

H. L. NGUYEN, A. V. NGUYEN, H. L. DUY, T.H. NGUYEN,
S. TASHIRO and M. TANAKA
Relationship among Welding Defects with
Convection and Material Flow Dynamic Considering
Principal Forces in Plasma Arc Welding
Metals, 11 (2021), 1444.

K. TAKENAKA, Y. SETSUHARA, G. UCHIDA and A. EBE
Amorphous InGaZnOx Thin Film Formation by a
Plasma-Assisted Reactive Process
OYO BUTSURI, 90, 1 (2021), 35-39 (in Japanese).

Y. KISAKA, S. MIKI, N. SEKIGUCHI, F. KIMURA, S. TASHIRO,
M. TANAKA, S. OZAWA, T. SUWA and Y. TAKAHASHI
Influence of Sulfur Content on Penetration Depth in
TIG Welding for High Manganese Stainless Steels
Metall. Mater. Trans. A, (2021).

20

S. TOKO, M. IDEGUCHI, T. HASEAGAWA, T. OKUMURA,
K. KAMATAKI, K. TAKENAKA, K. KOGA, M. SHIRATANI and
Y. SETSUHARA
Effect of Gas Flow Rate and Discharge Volume on
CO2 Methanation with Plasma Catalysis
Jpn. J. Appl. Phys., (2021).

F. HOU, K. ZHANG and H. NISHIKAWA
Surface Modification of Tetra-Needle Like ZnO(T-ZnO) and Characterization of Interface between
Sn1.0Ag0.5Cu and NiO Decorated T-ZnO
Proc. 2021 Int. Conf. on Electronics Packaging(ICEP2021), (2021), 133-134.

Y.-A. SHEN, H.-M. HSIEH, S.-H. CHEN, J. LI, S.-W. CHEN and
H. NISHIKAWA
Investigation of FeCoNiCu Properties: Thermal
Stability, Corrosion Behavior, Wettability with
Sn-3.0Ag-0.5Cu and Interlayer Formation ofMulti-Element Intermetallic CompoundAppl. Surf. Sci., 546 (2021), 148931.

D. L. HAN, B. PARK and H. NISHIKAWA
Effect of 4.0 mass% Cu Addition on Microstructureand Mechanical Properties of In-48Sn Alloy
Proc. 2021 Int. Conf. on Electronics Packaging(ICEP2021), (2021), 139-140.
B. PARK, D. L. HAN, M. SAITO, J. MIZUNO and H. NISHIKAWA
The Effect of Solid-State Nanoporous Cu Bonding
for Power Device
Proc. 2021 Int. Conf. on Electronics Packaging(ICEP2021), (2021), 159-160.

D. L. HAN, Y.-A. SHEN, S. HE and H. NISHIKAWA
Effect of Cu Addition on the Microstructure andMechanical
Properties
ofIn-Sn-based
Low-Temperature Alloy
Mater. Sci. Eng. A., 804 (2021), 140785.

H. NISHIKAWA, J. WANG, K. KARIYA and N. MASAGOThe Reliability of ENIG Joint Bonded by In-coated Cu
SheetProc. 2021 IEEE 71st Electronic Components andTechnology Conf. (ECTC), (2021), 520-525.

Z. JIN, Y.-A. SHEN, F. HUO, Y. C. CHAN and H. NISHIKAWA
Electromigration Behavior of Silver Thin Film
Fabricated by Electron-Beam Physical Vapor
Deposition
J. Mater. Sci., 56 (2021), 9769-9779.

B. PARK, D. L. HAN, M. SAITO, J. MIZUNO and H. NISHIKAWA
Fabrication and Characterization of Nanoporous
Copper through Chemical Dealloying of Cold-Rolled
Mn-Cu Alloy
J. Porous Mat., On line (2021).

Z. JIN, Y.-A. SHEN, Y. ZUO, Y. C. CHAN, S. H. MANNAN and
H. NISHIKAWA
Observation of Void Formation Patterns in SnAg
Films Undergoing Electromigration and Simulation
Using Random Walk Methods
Sci. Rep., 11 (2021), 8668.

J. HOU, Q. ZHANG, S. HE, J. BIAN, J. JIU, C. LI and
H. NISHIKAWA
Large-area and Low-Cost Cu-Cu Bonding with Cold
Spray Deposition, Oxidation and Reduction
Processes under Low-Temperature Conditions
J. Mater. Sci. -Mater. Electron., 32 (2021),
20461-20473.

Y. HIRATA, C.-H. YANG, S.-K. LIN and H. NISHIKAWA
Improvements in Mechanical Properties of Sn-Bi
Alloys with Addition of Zn and In
Mater. Sci. Eng. A., 813 (2021), 141131.
Z. JIN, Y.-A. SHEN, Y. ZUO, S. H. MANNAN and
H. NISHIKAWA
The Voids Growth Path on Sn-Ag Thin Film underHigh Current Density
Proc. 2021 Int. Conf. on Electronics Packaging(ICEP2021), (2021), 115-116.

F. HOU, Y.-A. SHEN, S. HE, K. ZHANG and H. NISHIKAWA
Fabrication of NiO/ZrO2 Nanocomposites Using Ball
Milling-Pyrolysis Method
Vacuum, 191 (2021), 110370.
F. HOU, Z. JIN, D. HAN, K. ZHANG and H. NISHIKAWA
Interface Design and the Strengthening-Ductility
Behavior of Tetra-Needle-Like ZnO Whisker
Reinforced Sn1.0Ag0.5Cu Composite Solders
Prepared with Ultrasonic Agitation
Mater. Des., 210 (2021), 110038.

21

Y. KIM, B. PARK, S. HYUN and H. NISHIKAWA
The Influence of Porosity and Pore Shape on the
Thermal Conductivity of Silver Sintered Joint for Die
AttachMater. Today Commun., 29 (2021), 102772.

T. ARIMURA, Y. SATO, M. IHAMA, N. YOSHIDA, M. YOSHIDA
and M. TSUKAMOTO
Influence of Ambient Pressure on SS316L Plate
Fabricated with Single Mode Fiber Laser
Proc. SPIE, 11673 (2021), 116731C1-6.

M. TSUKAMOTO
Material Processing of Surface Layer with Lasers
J. Smart Process., 10, 2 (2021), 45 (in Japanese).

Y. SATO, M. IHAMA, Y. MIZUGUCHI, N. YOSHIDA,
S. SRISAWADI, D. TANPRAYOON and M. TSUKAMOTO
Quantitative Evaluation of Spatter during Ti Plate
Fabricated by SLM in Vacuum
Proc. SPIE, 11673 (2021), 116770Q1-6.

M. TSUKAMOTO, Y. SATO, R. HIGASHINO, N. ABE, Y. FUNADA,
Y. SAKON, S. OUCHI, K. ASANO and K. TOJO
Advances in Material Processing Technology of
Copper Using Short Wavelength Lasers
Furukawa Electric Review, 52 (2021), 2-9.

S. FUJIO, Y. SATO, E. HORI, R. ITO, S. MASUNO, N. ABE and
M. TSUKAMOTO
Effect of Preheating on Pure Copper Welding by
Hybrid Laser System with Blue Diode Laser and IR
Laser
Proc. SPIE, 11673 (2021), 116731D1-7.

K. KAWASAKI, D. TANAKA, H. YAMADA, S. OHMAGARI,
Y. MOKUNO, A. CHAYAHARA, T. TAMAGAWA, Y. HIRONAKA,
K. YAMANOI, M. TSUKAMOTO, Y. SATO, T. SOMEKAWA,
H. NAGATOMO, K. MIMA and K. SHIGEMORI
Direct-drive Implosion Experiment of Diamond
Capsules Fabricated with Hot Filament Chemical
Vapor Deposition TechniquePhys. Plasmas, 28 (2021), 104501.

Y. MIZUGUCHI, T. ARIMURA, M. IHAMA, Y. SATO, N. YOSHIDA,
M. YOSHIDA and M. TSUKAMOTO
Effect of Microstructure for Additively Manufactured
Ti64 Plate on Modulated Pulses by Vacuum SLM
Proc. LIM2021, (2021), 949-958.

Y. YAMASHITA, Y. FUNADA, T. KUNIMINE, Y. SATO and
M. TSUKAMOTO
Formation of Cemented Tungsten Carbide Layerwith Compositional Gradient Processed by Directed
Energy Deposition
Mater. Sci. Forum, 1016 (2021), 1676-1681.

K. TAKENAKA, Y. SATO, K. TOJO and M. TSUKAMOTO
Development of SLM 3D Printing System Using
Galvano Scanner for Pure Copper Additive
Manufacturing by 200 W Blue Diode Laser
Proc. LIM2021, (2021), 727-731.

H. KOSHIJI, T. OHKUBO, T. SHIMOYAMA, T. NAGAI,
E. MATSUNAGA, Y. SATO and T.-H. DINH
Proposal of Vase Shaped Pumping Cavity for
Solar-Pumped Laser
J. Adv. Comput. Intell. and Intell. Inform., 25, 2(2021), 242-247.

T. PASANG, B. TAVLOVICH, O. YANNAY, B. JACKSON, M. FRY,
Y. TAO, C. TURANGI, J.-C. WANG, C.-P. JIANG, Y. SATO,
M. TSUKAMOTO and W. Z. MISIOLEK
Directionally-Dependent Mechanical Properties of
Ti6Al4V Manufactured by Electron Beam Melting(EBM) and Selective Laser Melting (SLM)
Materials, 14, 13 (2021), 3603.

Y. SATO, T. SHOBU and M. TSUKAMOTO
X Ray Induced Real Time Observation of Pure
Copper Layer Formed by Laser Metal Deposition
with Blue Diode Lasers
J. Smart Process., 10, 1 (2021), 15-19 (in Japanese).

Y. SATO, K. ONO, K. TAKENAKA, K. MORIMOTO, Y. FUNADA,
Y. YAMASHITA, T. OHKUBO, N. ABE and M. TSUKAMOTO
Fabrication of Pure Copper Rod by Multi-Beam Laser
Metal Deposition with Blue Diode Lasers
Proc. LPM2021, (2021), #21-039-1-#21-039-5.

T. OHKUBO, E. MATSUNAGA and Y. SATO
Numerical Simulation of Laser-Induced Bubble andMetal-Free Water Cannon
J. Adv. Comput. Intell. and Intell. Inform., 25, 1(2021), 50-55.

K. ONO, Y. SATO, Y. TAKAZAWA, Y. MORIMOTO, K. TAKENAKA,
Y. YAMASHITA, Y. FUNADA, N. ABE and M. TSUKAMOTO
Development of High Intensity Multibeam Laser
Metal Deposition System with Blue Diode Lasers for
Additively Manufacturing of Copper Rod
J. Laser Appl., 33 (2021), 042014.

22

K. MAEDA, Y. SATO, R. SUZUKI, T. SUGA and M. TSUKAMOTO
Laser Lap Joining of High-Strength Steel to
Aluminum with Cold Sprayed Steel Coating
J. Laser Appl., 33 (2021), 042017.

Y. SATO, K. ONO, K. TAKENAKA, K. MORIMOTO, Y. FUNADA,
Y. YAMASHITA, T. OHKUBO, N. ABE and M. TSUKAMOTO
Fabrication of Pure Copper Rod by Multi-beam Laser
Metal Deposition with Blue Diode Lasers
J. Laser Micro/Nanoengineering, 16, 3 (2021),
189-193.

Y. MIZUGUCHI, T. ARIMURA, M. IHAMA, Y. SATO, N. YOSHIDA,
M. YOSHIDA and M. TSUKAMOTO
Effect of Energy on Ti Plate Fabrication by Vacuum
Selective Laser Melting for Uniformity of Grain Size
J. Laser Appl., 33 (2021), 042027.

P. K. PARCHURI, S. KOTEGAWA, K. ITO, H. YAMAMOTO,
A. MORI, S. TANAKA and K. HOKAMOTO
Characterization of Shock Wave Damages
Explosion Welded Mo/Cu Clads
Metals, 11, 3 (2021), 501.

K. TAKENAKA, Y. SATO, K. ONO, Y. FUNADA and
M. TSUKAMOTO
Pure Copper Layer Formation on Stainless-Steel andAluminum Substrate with a Multibeam Laser Metal
Deposition System with Blue Diode Laser
J. Laser Appl., 33 (2021), 042033.

inT. KAKIZAKI, S. KOGA, H. YAMAMOTO, Y. MIKAMI, K. ITO,
K. YAMAZAKI, S. SASAKURA and H. WATANABE
Microstructure Features and Formation Mechanism
in a Newly Developed Electroslag Welding
Weld. World, (2021), 1-12.

Y. SATO, N. SHINOHARA, T. ARITA, M. MIZUTANI, T. OHKUBO,
H. NAKANO and M. TSUKAMOTO
In Situ X-Ray Observation of Keyhole Dynamics for
Laser Beam Welding of Stainless Steel with 16 kW
Disk Laser
J. Laser Appl., 33 (2021), 042043.

H. UBUKATA, F. TAKEIRI, K. SHITARA, T. CEDRIC, T. SAITO,
T. KAMIYAMA, T. BROUX, A. KUWABARA, G. KOBAYASHI and
H. KAGEYAMA
Anion Ordering Enables Fast H-conduction at Low
Temperatures
Sci. Adv., 7, 23 (2021), eabf7883.

S. FUJIO, Y. SATO, K. TAKENAKA, R. ITO, M. ITO, M. HARADA,
T. NISHIKAWA, T. SUGA and M. TSUKAMOTO
Welding of Pure Copper Wires Using a Hybrid Laser
System with a Blue Diode Laser and a Single-ModeFiber Laser
J. Laser Appl., 33 (2021), 042056.

K. SHITARA, M. YOSHIYA, J. UMEDA and K. KONDOH
Substantial Role of Charge Transfer on the Diffusion
Mechanism of Interstitial Elements in Α-Titanium: A
First-principles Study
Scr. Mater., 203 (2021), 114065.

Y. SATO, Y. MIZUGUCHI, K. TAKENAKA, N. YOSHIDA,
S. SRISAWADI, D. TANPRAYOON, T. OHKUBO, T. SUGA and
M. TSUKAMOTO
Pure Titanium Fabrication with Spatter-Less
Selective Laser Melting in Vacuum
Results in Optics, 5 (2021), 100184.

H. ITO, K. SHITARA, Y. WANG, K. FUJII, M. YASHIMA, Y. GOTO,
C. MORIYOSHI, N. C. ROSERO-NAVARRO, A. MIURA and
K. TADANAGA
Kinetically Stabilized Cation Arrangement in Li3YCl6
Superionic Conductor during Solid-State Reaction
Adv. Sci., 8, 15 (2021), 2101413.

K. TAKENAKA, N. SHINOHARA, M. HASHIDA, M. KUSABA,
H. SAKAGAMI, Y. SATO, S. MASUNO, T. NAGASHIMA and
M. TSUKAMOTO
Delay Times for Ablation Rate Suppression by
Femtosecond Laser Irradiation with a Two-Color
Double-Pulse BeamAppl. Phys. Lett., 119 (2021), 231603.

K. IWASHITA, R. TAMAKI, T. OKAMOTO, K. IYAMA, T. AZAMA,
F. MIYASAKA and H. SERIZAWA
Development of the Technique to Predict
Penetration of the Arc-welding
Proc. Syposium on Joining Technologies inAdvanced Automobile Assembly 2021., (2021),
73-76 (in Japanese).

23

H. BABA, K. KADOTA, T. ERA, T. UEYAMA, M. MAESHIMA,
K. LADOI, H. INOUE and M. TANAKA
Single-Pass Full Penetration Welding for Thick
Stainless Steel Using High-Current GMAW
Q. J. Jpn. Weld. Soc., 39, 1 (2021), 39-50 (inJapanese).

J. LI, X. LI, X. ZHANG, J. ZHANG, Y. DUAN, X. LI, D. JIANG,
T. KOZAWA and M. NAITO
Development of Graphene Aerogels with HighStrength and Ultrahigh Adsorption Capacity for Gas
Purification
Mater. Des., 208 (2021), 109903.

T. ISHIKAWA and M. NAITO
A New Process for Creating a Solid-Phase Sintered
Body Using a Unique Densification Process between
Powders
IJCES, 2021;00: (2021), 1-7.

T. KOZAWA, C. ZHANG, T. UCHIKOSHI, K. FUKUYAMA,
A. KONDO and M. NAITO
Solution-Based Approach for the Continuous
Fabrication of Thin Lithium-Ion Battery Electrodes by
Wet Mechanochemical Synthesis and Electrophoretic
Deposition
Adv. Eng. Mater., 23 (2021), 2100524.

H.-Y. LIN, Y.-K. HUANG, P.-Y. HSU, W.-H. TUAN and
M. NAITO
Sintering of Degradable Bone Substitutes at Room
Temperature
Ceram. Int., 47, 15 (2021), 21714-21720.

K. KANAI, S. OZAWA, T. KOZAWA and M. NAITO
Low
Temperature
SynthesisofGa-doped
Li7La3Zr2O12 Garnet-Type Solid Electrolyte by
Mechanical Method
Adv. Powder Technol., 32, 10 (2021), 3860-3868.

M. NAITO, T. KOZAWA, A. KONDO and C. C. HUANG
Smart Powder Processing for Excellent Advanced
Materials and Its Applications
KONA Powder Part. J., 39 (2021), 2023001.

B. SADEGHI, G. FAN, Z. TAN, Z. LI, A. KONDO and M. NAITO
Smart Mechanical Powder Processing for Producing
Carbon Nanotube Reinforced Aluminum Matrix
Composites
KONA Powder Part. J., 38 (2021), 1-11.

M. NAITO
Introduction of Advanced Powder Technology
Toward Society 5.0 (Book)
Published by Kogyo Tsusin Co., (2021) (inJapanese).

A. KONDO, T. KOZAWA, T. ISHIKAWA and M. NAITO
Rapid Synthesis of YAG Phosphor by
Mechanical Method
Int. J. Appl. Ceram. Technol., (2021).

T. KOZAWA, K. FUKUYAMA, A. KONDO and M. NAITO
Wet Milling Synthesis of NH4CoPO4·H2O Platelets:
Formation Reaction, Growth Mechanism, andConversion into High-Voltage LiCoPO4 Cathode for
Li-Ion Batteries
Mater. Res. Bull., 135 (2021), 111149.

FacileT. TASAKA, T. OHMURA, A. KONDO, T. KOZAWA and
M. NAITO
Effect of Heat Processing on the Thermal andMechanical Properties of Fibrous Fumed Alumina
Compacts
J. Soc. Powder Technol. Jpn., 58 (2021), 596-602(in Japanese).

T. KOZAWA, K. FUKUYAMA, K. KUSHIMOTO, S. ISHIHARA,
J. KANO, A. KONDO and M. NAITO
Effect of Ball Collision Direction on a Wet
Mechanochemical Reaction
Sci. Rep., 11 (2021), 210.

C. SHEN, Y. ODA, M. MATSUBARA, J. YABUKI, S. YAMANAKA,
H. ABE, M. NAITO, A. MURAMATSU and K. KANIE
Magnetorheological Fluids with Surface-Modified
Iron Oxide Magnetic Particles with Controlled Sizeand Shape
ACS Appl. Mater. Interfaces, 13 (2021),
20581-20588.

T. KOZAWA
Combined Wet Milling and Heat Treatment in Water
Vapor for Producing Amorphous to Crystalline
Ultrafine Li1.3Al0.3Ti1.7(PO4)3 Solid Electrolyte Particles
RSC Adv., 11 (2021), 14796-14804.

24

[Materials, Metallurgy & Weldability]

Y. ABE, T. FUJIMOTO, M. NAKATANI, M. SHIGETA and
M. TANAKA
Study on Proper Welding Condition for
Ultrra-Narrow Gap Submerged Arc Welding
Q. J. Jpn. Weld. Soc., 39, 1 (2021), 64-74 (inJapanese).

T. KAKIZAKI, S. KOGA, H. YAMAMOTO, Y. MIKAMI, K. ITO,
K. YAMAZAKI, S. SASAKURA and H. WATANABE
Feature of Microstructure and Its Formation
Mechanism in a Newly Developed Electro Slag
Welding
Proc. 74th IIW on-line Assembly & Int. Conf.,
IX-L-1237-2021 (2021).

U. K. MOHANTY, A. SHARMA, Y. ABE, T. FUJIMOTO,
M. NAKATANI, A. KITAGAWA, M. TANAKA and T. SUGA
Thermal Modelling of Alternating Current Square
Waveform Arc Welding
Case Stud. Therm. Eng., 25 (2021), 100885.

H. YAMAMOTO, Y. IMAGAWA and K. ITO
Investigation of WC-tool-component Solution
Mechanism Arose in a Steel Surface Layer during
Friction Stir Processing
Proc. 74th IIW on-line Assembly & Int. Conf.,
IX-L-1236-2021 (2021).

Y. ABE, T. FUJIMOTO, M. NAKATANI, H. KOMEN, M. SHIGETA
and M. TANAKAHigh Speed X-ray Observation of Digital Controlled
Submerged Arc Welding Phenomena
Sci. Technol. Weld. Joining, 26, 4 (2021), 332-340.

J. D. KULKARNI, S. B. GOKA, P. K. PARCHURI, H. YAMAMOTO,
K. ITO and S. SIMHAMBHATLA
Microstructure Evolution along Build Direction for
Thin-Wall Components Fabricated with Wire-Direct
Energy Deposition
Rapid Prototyping J., 27, 7 (2021), 1289-1301.

P. WATTANAPOMPHAN, C. PHONGPHISUTTHINAN, T. SUGA,
M. MIZUTANI and S. KATAYAMA
Evolution Behavior of Laser Welding in Hybrid
Structure between Open-Cell Aluminum Foam andSolid Aluminum Shell
Weld. World, 65, 2 (2021), 263-274.

H. YAMAMOTO, Y. IMAGAWA, K. ITO, K. CHEN and L. ZHANG
Alloying a Topmost Steel-Plate Layer with WC-toolConstituent Elements during Friction Stir Processing
J. Manufacturing Processes, 69 (2021), 311-319.

K. NOMURA, K. FUKUSHIMA, T. MATSUMURA and S. ASAI
Burn-through Prediction and Weld Depth Estimation
by Deep Learning Model Monitoring the Molten
Pool in Gas Metal Arc Welding with Gap Fluctuation
J. Manuf. Process., 61 (2021), 590-600.

T. SELVARAJ, S. ISHIDA, J. ARAKAWA, H. AKEBONO, A. SUGETA,
Y. AOKI and H. FUJII
Elucidation of Fatigue Characteristics and Fracture
MechanismofFriction
Stir
Spot-Welded
Tension-Shear Joint Steels
Fatigue Fract. Eng. Mater. Struct., 44, 1 (2021),
74-84.

T. MATSUIDA, S. OTAKI, K. NOMURA and S. ASAI
In-process Monitoring of Welding Quality by
Robotic Laser Ultrasonic Measurement System Using
Microchip Laser
Q. J. Jpn. Weld. Soc., 39, 1 (2021), 11-23 (inJapanese).

B. MIRSHEKARIA, A. Zarei-HANZAKI, A. BARABIA, H. R. ABEDI,
S. J. LEE and H. FUJIIAn Anomalous Effect of Grain Refinement on Yield
Stress in Friction Stir Processed Lightweight SteelMater. Sci. Eng. A., 799 (2021), 140057.

S. EDA, Y. OGINO, S. ASAI and T. SANO
Non-equilibrium Modeling of Arc Plasmas in theGas–metal Arc–welding Process
J. Phys. D-Appl. Phys., 54, 32 (2021), 325204.

Z. WU, T. NAGIRA, K. USHIODA, G. MIYAMOTO and H. FUJIIMicrostructures and Tensile Properties of Friction
Stir Welded 0.2%C-Si-Mn SteelMater. Sci. Eng. A., 799 (2021), 140068.

25

J.-W. CHOI, Y. AOKI, K. USHIODA and H. FUJII
Linear Friction Welding of Ti-6Al-4V Alloy Fabricatedbelow Β-Phase Transformation Temperature
Scr. Mater., 191 (2021), 12-16.

H. FUJII
LFW(Linear Friction Welding)
Q. J. Jpn. Weld. Soc., 90, 7 (2021), 39-48 (inJapanese).

H. MOROHASHI, Y. HANGAI, Y. AOKI, H. FUJII and
N. YOSHIKAWA
Development of Simultaneous Process of Precursor
Fabrication and Foaming Using Friction Stir Welding
J. Jpn Inst. Light Metal, 71, 2 (2021), 121-126 (inJapanese).

T. OKADA, M. YASUYAMA, M. UCHIHARA and H. FUJII
Effect of Paint Baking Thermal Cycle on Joint Stregthof Spot Welds
Q. J. Jpn. Weld. Soc., 39, 3 (2021), 209-217 (inJapanese).
Y. HANGAI, R. KISHIMOTO, M. ANDO, H. MITSUGI, Y. GOTO,
Y. KAMAKOSHI, R. SUZUKI, M. MATSUBARA, Y. AOKI and H.
FUJIIFriction Welding of Porous Aluminum andPolycarbonate Plate
Mater. Lett., 304 (2021), 130610.

Z. ZENG, M. ZHOU, P. LYNCHE, F. MOMPIOU,
Q. GU, M. ESMAILY, Y. YAN, Y. QIU, S. XU, H. FUJII, C. DAVIES,
J.-F. NIE and N. BIRBILIS
Deformation Modes during Room Temperature
Tension of Fine-Grained Pure Magnesium
Acta Mater., 206 (2021), 116648.

Y. MORISADA and H. FUJIIFriction Stir Welding of Mg-Li Alloys
J. Light Metal Weld., 59, 1 (2021), 6-10 (inJapanese).

Y. TOMITA and H. FUJII
Influence of Particle Diameter on Sand Flowability in
Binder Jetting Additive Manufacturing Process Using
Atomized Airtificial Sand
J. JFS, 93, 3 (2021), 115-120 (in Japanese).

X. WANG, Y. MORISADA and H. FUJII
High-strength Fe/Al Dissimilar Joint with Uniform
Nanometer-Sized Intermetallic Compound Layer
and Mechanical Interlock Formed by Adjustable
Probes during Double-Sided Friction Stir Spot
Welding
Mater. Sci. Eng. A., 809 (2021), 1-7.

J.-W. CHOI, W. LI, K. USHIODA and H. FUJII
Flat Hardness Distribution in AA6061 Joints by
Linear Friction Welding
Sci. Rep., 11, 11756 (2021), 1-7.
T. KAWAKUBO, T. NAGIRA, K. USHIODA and H. FUJIIFriction Stir Welding of High Phosphorus
Weathering Steel -Weldabilities, Microstructural
Evolution and Mechanical Properties
ISIJ Int., 61, 7 (2021), 2150-2158.

X. WANG, Y. MORISADA and H. FUJII
Flat Friction Stir Spot Welding of Low Carbon Steelby Double Side Adjustable Tools
J. Mater. Sci. Technol., 66 (2021), 1-9.
M. R. MUHAMAD, S. RAJA, M. F. JAMALUDIN, F. YUSOF,
Y. MORISADA, T. SUGA and H. FUJII
Enhancements on Dissimilar Friction Stir Welding
Between AZ31 and SPHC Mild Steel With Al-Mg as
Powder Additives
J. Manuf. Sci. Eng, 143 (2021), 071005-1-10.

B. MIRSHEKARI, A. ZAREI-HANZAKI, A. BARABI, H. R. ABEDI,
S.-J. LEE and H. FUJIIThe Correlation of Austenite Stability and Sequenceof
StrainAccommodation
duringRoom
Temperature Deformation of a Duplex Lightweight
Steel
J. Mater. Res. Technol-JMRT, 13 (2021), 1923-1932.

Y. OKUTOMO, K. NISHIMOTO, S. NISHINO, Y. MORISADA and
H. FUJII
EffectofRe-aging
on
FatigueStrength
Characteristics of Friction Stir Joints of 2024 and6061 Aluminum Alloy
J. Light Metal Wel., 59, 7 (2021), 279-288.

R. SUZUKI, Y. HANGAI, Y. ASAKAWA, I. SHOHJI, H. FUJII and
M. MATSUBARA
Effect of Si Concentration of a Brazing Precursor on
the Bonding Strength of Aluminum Foam Bonded
via Foaming Bonding
Mater. Trans., 62, 8 (2021), 1210-1215.

26

X. WANG, Y. MORISADA and H. FUJIIInterface Development and Microstructure Evolution
during Double-Sided Friction Stir Spot Welding ofMagnesium Alloy by Adjustable Probes and Their
Effects on Mechanical Properties of the Joint
J. Mater. Process. Technol., 294 (2021), 117104.

B. VICHARAPU, H. LIU, Y. MORISADA, H. FUJII and A. DE
Degradation of Nickel-Bonded Tungsten Carbide
Tools in Friction Stir Welding of High Carbon SteelInt. J. Adv. Manuf. Technol., 115 (2021), 1049-1061.
H. LIU, T. MIYAGAKI, Y.-S. LIM, M. KAMAI and H. FUJIIA Novel Pressure-Controlled Joule-Heat Forge
Welding Method to Fabricate Sound Carbon Steel
Joints below the A1 Point
J. Manufacturing Processes, 68 (2021), 770-777.

Y. HANGAI, D. KAWATO, M. OHASHI, M. ANDO, T. OGURA,
Y. MORISADA, H. FUJII, Y. KAMAKOSHI, H. MITSUGI and K.
AMAGAI
X-ray Radiography Inspection of Pores of Thin
Aluminum Foam during Press Forming Immediately
after Foaming
Metals, 11, 8 (2021), 1226.

N. KOGA, O. UMEZAWA, M. YAMAMOTO, T. YAMAMOTO,
T. YAMASHITA, S. MOROOKA, T. KAWASAKI and S. HARJO
Effect of Solute Carbon on the Characteristic
Hardening of Steel at High Temperature
Metall. Mater. Trans. A, 52 (2021), 897-901.

A. SHARMA, Y. MORISADA and H. FUJII
Influence of Aluminium-Rich Intermetallics on
Microstructure Evolution and Mechanical Properties
of Friction Stir Alloyed Alsingle BondFe Alloy System
J. Manufacturing Processes, 68 (2021), 668-682.

T. YAMASHITA, S. HARJO, O. UMEZAWA and T. KAWASAKI
Neutron Diffraction Mapping Measurement forJapanese Nails in the Ancient and Present Days
JPS conference proceedings, 33 (2021), 11063.

X. IWANG, Y. MORISADA and H. FUJIIInterface Strengthening in Dissimilar Double-Sided
Friction Stir Spot Welding of AZ31/ZK60 Magnesium
Alloys by Adjustable Probes
J. Mater. Sci. Technol., 85 (2021), 158-168.

L. JIA, M.-F. YANG, Z.-L LUA, J. XU, H. XIE and K. KONDOH
Microstructure Evolution and Reaction Behavior of
Cu-Ni Alloy and B4C Powder System
Prog. Nat. Sci., 31, 1 (2021), 55-62.

M. MORI, T. TATSUYA, Y. MORISADA and H. FUJII
Effect of Friction Stir Processing on Mechanical
Properties of AA-TIG Welded 9%Ni Steel
Q. J. Jpn. Weld. Soc., 39, 3 (2021), 200-208 (inJapanese).

X. ZHANG, S. LI, L. LIU, D. PAN, L. GAO, X. JI and K. KONDOH
Balanced Development in Strength-Ductility of
Ultrahigh-Strength Aluminum Matrix Composites byControlled Oxidation Method
Mater. Sci. Eng. A., 804 (2021), 140781.

Y. MORISADA, J.-W. CHOI and H. FUJII
Dissimilar Friction Stir Welding of Titanium and CFRP
Titanium, 69, 4 (2021), 321-325 (in Japanese).

Q. YAN, B. CHEN, X. ZHOU, K. KONDOH and J. LI
Effect of Metal Powder Characteristics on Structural
Defects of Graphene Nanosheets in Metal
Composite Powders Dispersed by Ball Milling
Crystals, 11, 3 (2021), 260.

Y.-S. LIM, Y. MORISADA, H. LIU and H. FUJII
Ti-6Al-4V/SUS316L Dissimilar Joints with Ultrahigh
Joint
Efficiency
Fabricated
by
a
Novel
Pressure-Controlled Joule Heat Forge Welding
MethodJ. Mater. Process. Technol., 298 (2021), 117283.

H. GHANDVAR, M. A. JABBA, S. S. R. KOLOOR, M. PETRŮ,A. BAHADOR, T. A. A. BAKAR and K. KONDOH
Role B4C Addition on Microstructure, Mechanical,
and Wear Characteristics of Al-20%Mg2Si Hybrid
Metal Matrix Composite
Appl. Sci., 11, 7 (2021), 3047.

T. NAGIRA, D. YAMASHITA, M. KAMAI, H. LIU, Y. AOKI,K. UESUGI, A. TAKEUCHI and H. FUJIIIn Situ Observation of Solidification Crack
Propagation for Type 310S and 316L Stainless Steels
during TIG Welding Using Synchrotron X-ray
Imaging
J. Mater. Sci., 56 (2021), 10653-10663.

27

R. YAMANOGLU, A. BAHADOR and K. KONDOH
Effect of Mo Addition on the Mechanical and Wear
Behavior of Plasma Rotating Electrode Process
Atomized Ti6Al4V Alloy
J. Mater. Eng. Perform., 30 (2021), 3203-3212.

H. YAO, H. WEN, K. CHEN, M. JIANG, K. M. REDDY,
K. KONDOH, M. WANG, X. HUA and A. SHAN
Interfacial Phases Formed in Friction Stir Lap
Welding High Entropy Alloy to Al Alloy
Scr. Mater., 201 (2021), 113972.

K. KONDOH, T. TERAMAE, K. SHITARA and J. UMEDA
Solid-solution Strengthening Mechanism of Ti-Zr
Sintered Alloy with Biocompatibility
Titanium, 69, 2 (2021), 43-49.

R. YAMANOGLU, A. BAHADOR, K. KONDOH, S. GUMUS,
S. GOKCE and O. MURATALNew Magnesium Composite with Mg17Al12Intermetallic Particles
Powder Metall. Met. Ceram., 60 (2021), 110-120.

Q. YAN, B. CHEN, L. CAO, K. Y. LIU, S. LI, L. JIA, K. KONDOH
and J. S. LI
Improved Mechanical Properties in Titanium Matrix
Composites Reinforced with Quasi-Continuously
Networked Graphene Nanosheets and In-Situ
Formed Carbides
J. Mater. Sci. Technol., 96 (2021), 85-93.

K. KONDOH, S. KARIYA, A. KHANTACHAWANA, A. ALHAZAA
and J. UMEDA
Quantitative Strengthening Evaluation of Powder
Metallurgy Titanium Alloys with Substitutional Zr
and Interstitial O Solutes via Homogenization Heat
Treatment
Materials, 14, 21 (2021), 6561.

X. FU, K. CHEN, Z. ZHANG, K. KONDOH, M. WANG and
X. HUA
Interfacial Microstructure and Mechanical Property
in Friction Stir Welded Mg/Al Joints under Low
Rotation Speed
Sci. Technol. Weld. Joining, 26 (2021), 470.

H. GHANDVAR, M. A. JABBAR, A. BAHADOR, T. A. A. BAKAR
and K. KONDOH
Microstructure Examination and SlidingWear
Behavior of Al-15%Mg2Si-xGd In Situ Composites
before and after Hot Extrusion
Lubricants, 10, 1 (2021), 3.

T. TANSIRANON, K. KONDOH, K. ISHIKAWA, Y. MIYAJIMA and
A. KHANTACHAWANA
Effect of Sintering Temperature on Mechanical
Property of Ti + ZrO2 Prepared by Spark Plasma
Sintering for Biomedical Applications
Mater. Sci. Forum, 1033 (2021), 93-97.

K. KONDOH, R. TAKEI, S. KARIYA, S. LI and J. UMEDA
Quantitative Analysis on Surface Potentials of
Impurities and Intermetallic Compounds Dispersed
in Mg Alloys Using Scanning Kelvin Probe ForceMicroscopy
andUltraviolet
Photoelectron
Spectroscopy
Mater. Chem. Phys., (2021), 125760.

T. SONG, T. DONG, S. L. LU, K. KONDOH, R. DAS, M. BRANDTand Q. MA
Simulation-informed Laser Metal Powder Depositionof Ti-6Al-4V with Ultrafine Α-Β Lamellar Structures
for Desired Tensile Properties
Addit. Manuf., 46 (2021), 102139.

J. UMEDA
Fundamental Research on Multi-functional Materials
by Atomic to Micron Trans-scale Design and Their
Applications
J. Smart Process., 10, 1 (2021), 3-9 (in Japanese).

L. JIA, M.-F. YANG, S.-P. TAO, H. XIE, Z.-L. LU, K. KONDOH
and Z.-G. XING
Microstructure Evolution and Reaction Behavior of
Cu-Ni-Si Powder System under Solid-State Sintering
Mater. Chem. Phys., 271 (2021), 124942.

A. ALHAZAA, A. ASSAIFAN, M. HEZAM, M. A. SHAR, J. UMEDA
and K. KONDOH
EffectofSinteringTemperatureonthe
Microstructure and Mechanical Properties of theTi-2.5Zr Alloy
Mater. Res. Express, 8 (2021), 016522.

R. YAMANOGLU, A. BAHADOR and K. KONDOH
Fabrication Methods of Porous Titanium Implants by
Powder Metallurgy
Trans. Indian Inst. Met., 74 (2021), 2555-2567.

28

J. UMEDA, T. TANAKA, T. TERAMAE, S. KARIYA, J. FUJITA,
H. NISHIKAWA, Y. SHIBUTANI, J. SHEN and K. KONDOH
Microstructures
AnalysisandQuantitative
Strengthening Evaluation of Powder Metallurgy
Ti-Fe Binary Extruded Alloys with (α+β)-dual-phase
Mater. Sci. Eng. A., 803 (2021), 140708.

L. LIU, S. LI, X. ZHANG, D. PAN, L. GAO, B. CHEN, J. UMEDA
and K. KONDOH
Syntheses,
Microstructure
Evolution
andPerformanceofStrength-Ductility
MatchedAluminum Matrix Composites Reinforced by Nano
SiC-cladded CNTs
Mater. Sci. Eng. A., 824 (2021), 141784.

J. UMEDA, N. NISHIMURA, H. FUJII, L. JIA and K. KONDOH
In-Situ Formed Al3Zr Compounds Reinforced Al
Composites and Tribological Application
Crystals, 11, 3 (2021), 227.

A. ISSARIYAPAT, A. BAHADOR, P. VISUTTIPITUKUL, S. LI,
J. UMEDA and K. KONDOH
Strengthening and Deformation Mechanism of
Selective Laser-Melted High-Concentration Nitrogen
Solute Α-Ti Materials with Heterogeneous
Microstructures via Heat Treatment
Mater. Sci. Eng. A., 826 (2021), 141935.

M. WANG, Y. LI, B. CHEN, D. SHI, J. UMEDA, K. KONDOH and
J. SHENThe Rate-Dependent Mechanical Behavior of
CNT-reinforced Aluminum Matrix Composites under
Tensile Loading
Mater. Sci. Eng. A., 808 (2021), 140893.

A. BAHADOR, J. UMEDA, R. YAMANOGLU, A. AMRIN,
A. ALHAZAA and K. KONDOH
Ultrafine-grain Formation and Improved Mechanical
Properties of Novel Extruded Ti-Fe-W Alloys with
Complete Solid Solution of Tungsten
J. Alloy. Compd, 875 (2021), 160031.

J. UMEDA, L. JIA, B. CHEN, K. CHEN, S. LI, K. SHITARA and
K. KONDOH
Precipitation and Distribution Behavior of In
Situ-Formed TiB Whiskers in Ti64 Composites
Fabricated by Selective Laser Melting
Crystals, 11, 4 (2021), 374.

A. ISSARIYAPAT, S. KARIYA, A. ALHAZAA, J. UMEDA and
K. KONDOH
Additive Manufacturing and Characterization ofHigh Strength Ti-Zr Gyroid Scaffolds Using
Pre-Mixed Ti-ZrH2 Powders
JOM, 73, 12 (2021), 4166-4176.

A. ISSARIYAPAT, T. SONG, P. VISUTTIPITUKUL, J. UMEDA, Q. MA
and K. KONDOH
Development of Core-Shell-Structured Ti-(N)Powdersfor
Additive
Manufacturing
andComparison of Tensile Properties of the Additively
Manufactured and Spark-Plasma-Sintered Ti-N
AlloysAdv. Powder Technol., 32, 7 (2021), 2379-2389.

W. SHI, S. LU, J. SHEN, B. CHEN, J. UMEDA, Q. WEI,K. KONDOH and Y. LI
ASB Induced Phase Transformation in High Oxygen
Doped Commercial Purity Ti
Mater. Sci. Eng. A., 830 (2021), 142321.

D. PAN, S. LI, L. GAO, L. LIU, X. ZHANG, X. JI, J. UMEDA and
K. KONDOH
TiB
WhiskerandNitrogenSolid-Solution
Synergistic-Strengthened
Titanium
MatrixComposites by Ti-BN via Spark Plasma Sintering and
Hot Extrusion
Adv. Eng. Mater., 23 (2021), 2100344.

D. PAN, S. LI, L. LIU, X. ZHANG, B. LI, B. CHEN, M. CHU,
X. HOU, Z. SUN, J. UMEDA and K. KONDOH
Enhanced
StrengthandDuctilityofNano-TiBw-Reinforced Titanium Matrix Composites
Fabricated by Electron Beam Powder Bed Fusion
Using Ti6Al4V-TiBw Composite Powder
Addit. Manuf., 50 (2021), 102519.

A. BAHADOR, A. ISSARIYAPAT, J. UMEDA, R. YAMANOGLU,
C. PRUNCU, A. AMRIN and K. KONDOH
Strength-ductility Balance of Powder Metallurgy
Ti-2Fe-2W Alloy Extruded at High-Temperature
J. Mater. Res. Technol-JMRT, 14 (2021), 677-691.

X. WANG, S. LU, B. CHEN, U. JUNKO, Y. SHIBUTANI,
K. KONDOH and J. SHEN
Micro-compression of High Oxygen Doped
Single-Crystal Titanium along Different Orientations
Mater. Sci. Eng. A., 832 (2021), 142449.

29

J. YANG, J. SHEN, Y. LIANG, W. SHI, B. CHEN, J. UMEDA and
K. KONDOH
Advanced Tensile Properties and Strain Rate
Sensitivity
ofTitanium
MatrixComposites
Reinforced with CaTiO3 Particles
J. Alloy. Compd, 897 (2021), 163229.

K. KADOI
Relationship between Microstructure Evolution andToughness of Weld Metal of Carbon SteelProc. 1st Okinawa-Int. Conf. on Welding and Allied
Technology (OIC-WA2021), (2021), 24-27.
K. KADOI, S. UENO and H. INOUE
Influential Factors on Weld Solidification Cracking
Susceptibility of Stainless Steels with F-mode
Solidification
IIW 74th Annual Assembly, (2021), IX-2727-2021.

M. WANG, J. SHEN, B. CHEN, Y. WANG, J. UMEDA,
K. KONDOH and Y. LI
Compressive Behavior of CNT-reinforced Aluminum
Matrix Composites under Various Strain Rates andTemperatures
Ceram. Int., (2021), in Press.

Z. ZHANG, Y. ZHAO, J. SHAN, A. WU, Y. S SATO, K. KADOI,
H. INOUE, H. GU and X. TANG
The Role of Shot Peening on Liquation Cracking in
Laser Cladding of K447A Nickel Superalloy Powders
Over Its Non-weldable Cast Structure
Mater. Sci. Eng. A., 823 (2021), 141678.

E. ICHIKAWA, K. SHITARA, J. UMEDA, S. LI, B. CHEN and
K. KONDOH
Microstructures and Strengthening Mechanism of
Oxygen Soluted Titanium by Selective Laser Melting
J. Jpn. Soc. Powder Powder Metal., 68, 2 (2021),
67-75 (in Japanese).

M. SAKATA, K. KADOI and H. INOUE
Acceleration of 475 °C Embrittlement in Weld Metalof 22 mass% Cr-duplex Stainless SteelMater. Today Commun., 29 (2021), 102800.

N. MA, P. GENG, Y. MA, K. SHIMAKAWA, J.-W. CHOI, Y. AOKIand H. FUJII
Thermo-mechanical Modeling and Analysis of
Friction Spot Joining of Al Alloy and Carbon
Fiber-Reinforced Polymer
J. Mater. Res. Technol-JMRT, 12 (2021), 1777-1793.

Y. OGAWA, T. HORITA, N. IWATANI, K. KADOI, D. SHIOZAWA
and T. SAKAGAMI
Evaluation of Fatigue Strength Based on Dissipated
Energy for Laser Welds
Engineering Proc., 8, 1 (2021), 6.

R. HOMMA, Y. SHINOHARA, K. KADOI and H. INOUE
Effect of S and Si on the Formation of IntragranularFerrite and Inclusions in Ultra-Low Oxygen Weld
Metal of Low Carbon SteelISIJ Int., 61, 1 (2021), 309-316.

R. HOMMA, K. KADOI and H. INOUE
Effects of Ti and Al on the Formation of
Intragranular Ferrites in the Ultra-Low-Oxygen
Si-Mn Weld Metals of Low-Carbon SteelMater. Today Commun., 29 (2021), 102963.

K. KADOI and H. INOUE
Metallurgical Phase Transformation during Welding
and Control of Properties of Weld Metals
J. Smart Process., 10, 1 (2021), 26-31 (in Japanese).

X. CHENA, G. CHENG and Y. HOU
Effects of Titanium Content on the Large Precipitatesin 443 Ultra-Pure Ferritic Stainless SteelCan. Metall. Q. 60, 4 (2021), 239-248.

Z. ZHANG, Y. ZHAO, J. SHAN, A. WU, Y. S. SATO, S. TOKITA,
K. KADOI, H. INOUE, H. GU and X. TANG
Evolution Behavior of Liquid Film in theHeat-Affected
Zone
of
Laser
Cladding
Non-Weldable Nickel-Based Superalloy
J. Alloy. Compd, 863 (2021), 158463.

S. KIRIHARA
Stereolithographic Additive Manufacturing ofCeramic Components with Functionally Modulated
Structures
Open Ceramics, 5, 100068 (2021), 1-8.

C. CHENG, K. KADOI, H. FUJII, K. USHIODA and H. INOUE
Improved Strength and Ductility Balance ofMedium-carbon Steel with Chromium and Titanium
Fabricated by Friction Stir Welding Process
Mater. Sci. Eng. A., 803 (2021), 140689.

30

X. WANG, T. SHIMIZU, K. YOSHIHARA and S. KIRIHARA
Stereolithography Additive Manufacturing of Dental
Crowns Using Yttria Stabilized Zirconia
J. Smart Process., 10, 4 (2021), 270-273 (inJapanese).

C. T. THANH, N. H. BINH, P. N. D. DUOC, V. T. THU,
P. V. TRINH, N. N. ANH, N. V. TU, N. TUYEN, N. V. QUYNH,
V. C. TU, B. T. P. THAO, P. D. THANG, H. ABE and
N. V. CHUC
Electrochemical Sensor Based on Reduced Graphene
Oxide/Double-Walled
CarbonNanotubes/Octahedral
Fe3O4/Chitosan
Compositefor
Glyphosate Detection
Bull. Environ. Contam. Toxicol., 106 (2021),
1017-1023.

M. TAKAHASHI and S. KIRIHARA
Stereolithographic Additive Manufacturing of Solid
Electrolytes with Dendritic Lattice Patterns forApplied Considerations in Aluminum Refining
J. Smart Process., 10, 4 (2021), 274-278 (inJapanese).

H. ISHITSUKA, Y. NAKAMUA, H. ABE and Y. SUZUKI
Synthesis, Microstructure and Electrochemical
Characterization of NiMn2O4 Nanoparticles via a
Simple Citric Acid Method
J. Ceram. Soc. Jpn., 129, 6 (2021), 332-336.

T. SHIMIZU and S. KIRIHARA
Stereolithographic Additive Manufacturing of Solid
Electrolyte Sheets with Micro Emboss Patterns andMicrostructural Densifications through Pressing andHeating Treatments
J. Smart Process., 10, 4 (2021), 279-283 (inJapanese).

T. NAKA, T. NAKANE, S. ISHII, M. NAKAYAMA, A. OHMURA,
F. ISHIKAWA, A. D. VISSER, H. ABE and T. UCHIKOSHI
Cluster Glass Transition and Relaxation in the
Random Spinel CoGa2O4
Phys. Rev. B., 103 (2021), 224408.

T. SHIMIZU and S. KIRIHARA
Contribution to Sustainable Development Goals of
Additive Manufacturing
J. Smart Process., 10, 4 (2021), 152-158 (inJapanese).

L. ZHOU, F. LI, J.-X. LIU, S.-K. SUN, Y. LIANG and
G.-J. ZHANG
High-Entropy A2B2O7-type Oxide Ceramics: A
Potential Immobilising Matrix for High-Level
Radioactive Waste
J. Hazard. Mater., 415 (2021), 125596.

M. TAKAHASH and S. KIRIHARA
Stereolithographic Additive Manufacturing ofZirconia Electrodes with Dendritic Patterns for
Aluminum Smelting
Appl. Sci., 11, 17 (2021), 8168.

K. YAMAMOTO, K. SATO, M. MATSUDA, M. OZAWA andS. OHARA
Anomalous Low-Temperature Sintering of a Solid
Electrolyte Thin Film of Tailor-Made Nanocrystals on
a Porous Cathode Support for Low-Temperature
Solid Oxide Fuel Cells
Ceram. Int., 47 (2021), 15939-15946.

S. KIRIHARA
Stereolithographic Additive Manufacturing of
Acoustic Devices with Spatially Modulated Cavities
Int.
J.
Appl.
Ceram.
Technol.,(2021),
13925-1-13925-8.

Y. MA, S. NIU, H. LIU, Y. LI and N. MA
Microstructural Evolution in Friction Self-Piercing
Riveted Aluminum Alloy AA7075-T6 Joints
J. Mater. Sci. Technol., 82 (2021), 80-95.

S. KIRIHARA
Systematic Compounding of Ceramic Pastes in
Stereolithographic Additive Manufacturing
Materials, 14, 22 (2021), 1895611-1895945.

[Mechanics, Strength & Structural Design]

Z. DAI, X.-Z. SONG, F. TANG, X. KANG, S. LIU, H. ABE,
S. OHARA and Z. TAN
Preparation of 2D Ultrathin Titanium Dioxide
NanosheetswithEnhanced
Visible-Light
Photocatalytic Activity
Micro Nano Lett., 16 (2021), 313-318.

T. YAMASHITA, S. TOMONO, S. MOROOKA, S. HARJO,
T. KAWASAKI, T. NAMEKI, N. KOGA and O. UMEZAWA
Stress Partitioning Behavior of Duplex Alloys
Consisting of BCC and FCC Phases at Low
Temperature
JPS conference proceedings, 33 (2021), 11064.

31

T. YAMASHITA, N. KOGA, T. KAWASAKI, S. MOROOKA,
S. TOMONO, O. UMEZAWA and S. HARJOWork Hardening Behavior of Dual
Copper-Iron Alloy at Low Temperature
Mater. Sci. Eng. A., 819 (2021), 141509.

G. RUWEI, J. DU, Z. WEI, S. XU and N. MA
Modelling and Experimental Observation of the
Deposition Geometry and Microstructure Evolutionof Aluminum Alloy Fabricated by Wire-Arc Additive
Manufacturing
J. Manufacturing Processes, 64, 64 (2021), 369-378.

Phase

Y. LIU, N. MA, F. LU and H. FANG
Measurement and Analysis of Welding Deformationin Arc Welded Lap Joints of Thin Steel Sheets withDifferent Material Properties
J. Manufacturing Processes, 61 (2021), 507-517.

Q. WANG, J. M. SHI, L. X. ZHANG, J. T. XIONG, J. L. LI, N. MA
and J. C. FENG
Additive Manufacturing of a High-Strength ZrC-SiC
and TC4 Gradient Structure Based on a Combinationof Laser Deposition Technique and Brazing, Journalof Materiomics
J. Materiomics, 7, 3 (2021), 1-10.

T. MATSUZAKI, M. K. HIRAOKA, F. ZHONGYUAN, N. MA,
H. MURAKAWA, S. KANO, K. OKADA, S. KIMURA, C. SHIGA
and H. YAJIMA
New LTT Welding Material and All-Position Repair
Welding with Elongated Bead for Super-Long
Fatigue Life of Boxing Fillet Joints
J. Marine Sci. Technol. (JMST), 32, 365 (2021),
153-161 (in Japanese).

A. ZUO, C. SHAO, X. HUO, N. MA and F. LU
Study on the Laves Phase Precipitation Behavior and
Its Effect on Toughness of 10Cr-1Mo Steel Weld
Joint after Thermal Aging
J. Manufacturing Processes, 64 (2021), 1287-1295.

H. FENG, N. MA, S. TSUTSUMI and F. LU
Investigation of Residual Stress in Multi-Pass
T-welded
Joint
Using
Low
Transformation
Temperature Welding Wire
Materials, 14, 2 (2021), 1-15.

Q. WANG, N. MA, X.-T. LUO and C.-J. LI
Capturing Cold-Spray Bonding Features of Pure Cu
from in Situ Deformation Behavior Using a
High-Accuracy Material Model
Surf. Coat. Technol., 413 (2021), 1-11.

Z. FENG, X. DI, S. WU and N. MA
Transformation
Temperatures,
Mechanical
Properties
andResidualStressof
Two
Low-Transformation-Temperature Weld Metals
Sci. Technol. Weld. Joining, 26 (2021), 144-152.

N. MA, K. SHIMAKAWA, P. GENG, Y. MA, J.-W. CHOI, Y. AOKIand H. FUJII
Thermal-mechanical Coupling Analysis and Strength
Assessment of Friction Lap Spot Joining of A6061
Alloy and Carbon Fiber Reinforced Polymer
J. Mater. Res. Technol-JMRT, 12 (2021), 1777-1793.

M. YU, N. MA, K. NARASAKI, S. TSUTSUMI and H. FUJII
Modelling and Measurement of Thick AluminumFSW Induced Thermal Strain and Residual Stress
J. Light Metal Wel., 59, 2 (2021), 19-28.

Z. FENG, N. MA and S. TSUTSUMI
Size Effect on Welding Residual Stress in Low
Transformation Temperature Welded Joints
Mar. Struct., 78 (2021), 1-11.

W. HUANG, N. MA, Y. MA, T. AMAISHI, K. TAKADA andT. HAMA
Material Model Development of Magnesium Alloyand Its Strength Evaluation
Materials, 14, 2 (2021), 1-16.

K. SAITO, T. HIRASHIMA, N. MA and H. MURAKAWA
Crack Singular Field Evaluation with Characteristic
Tensor Considering Residual Stress
Q. J. Jpn. Weld. Soc., 39, 2 (2021), 105-114 (inJapanese).

X.-T. LUO, Y. GE, Y. XIE, Y. WEI, R. HUANG, N. MA,
C. S. RAMACHANDRAN and C.-J. LI
Dynamic Evolution of Oxide Scale on the Surfaces ofFeed Stock Particles from Cracking and Segmenting
to Peel-Off While Cold Spraying Copper Powder
Having a High Oxygen Content
J. Mater. Sci. Technol., 67 (2021), 105-115.

M. FAN, C. SHAO, Y. WANG, X. HUO, N. MA and F. LU
In-situ DIC Investigation on Local Stress-Strain
Behavior in Creep-Fatigue Test of Dissimilar Steel
Welded Joint
Int. J. Fatigue, 152 (2021), 1-13.

32

T. L. AUNG, N. MA, K. KISHIDA and A. GUZIKAdvanced Structural Health Monitoring Method byIntegrated Isogeometric Analysis and Distributed
Fiber Optic Sensing
Sensors, 21, 17 (2021), 5794.

T. CHINO, A. KUNUGI, T. KAWASHIMA, G. WATANABE, C. CAN
and N. MA
Fast Prediction for Resistance Spot Welding
Deformation Using Inherent Strain Method andNugget Model
Materials, 14 (2021), 1-11.

T. L. AUNG and N. MA
Isogeometric Analysis and Bayesian Optimization on
Efficient Weld Geometry Design for Remarkable
Stress Concentration Reduction
Comput. -Aided Des., 139 (2021), 1-13.

R. NISHIMURA, N. MA, Y. LIU, W. LI and T. YASUKI
Measurement and Analysis of Welding Deformation
and Residual Stress in CMT Welded Lap Joints of1180 MPa Steel Sheets
J. Manufacturing Processes, 72 (2021), 515-528.

Y. LIU, P. WANG, H. FANG and N. MA
Characteristics of Welding Distortion and ResidualStresses in Thin-Walled Pipes by Solid-Shell Hybrid
Modelling and Experimental Verification
J. Manufacturing Processes, 69 (2021), 532-544.

Q. WANG, N. MA, X.-T. LUO and C.-J. LI
Towards
BetterUnderstanding
Supersonic
Impact-Bonding Behavior of Cold Sprayed 6061-T6
Aluminum Alloy Based on a High-Accuracy Material
Model
Addit. Manuf., 48 (2021), 1-11.

S. WU, N. MA, S. RASHED and N. OSAWA
Development of Die-Less Single-Tool Multi-Point
Plate Forming Technology for 3D Curved ShapeInt. J. Adv. Manuf. Technol., (2021).

S. WU, L. GAO, Y. MATSUOKA, S. RASHED, Y. ZHAO andN. MAMulti-step Toolpath Approach to Improve
Dimensional Accuracy of a Nonaxisymmetric Part in
Incremental Sheet Forming and Its Mechanism
AnalysisJ. Mech. Sci. Technol., 67 (2021), 1-12.

S. REN, N. MA, S. TSUTSUMI, G. WATANABE, C. CAO andS. LUO
Post-weld Cold Working for Fatigue Strength
Improvement of Resistance Spot Welded Joint ofAdvanced High-Strength SteelJ. Mater. Process. Technol., 299 (2021), 117364.

K. SAITO, T. HIRASHIMA, N. MA and H. MURAKAWA
Crack Singular Field Evaluation with Characteristic
Tensor Considering Residual StressWeld. Int., 2021, ID2014662 (2021), 1-13.

S. MAEDA, K. IKUSHIMA, M. SHIBAHARA and N. MA
Development of Analysis Method for Hot Cracking
Considering Mechanical and Metallurgical Factors
Q. J. Jpn. Weld. Soc., 39, 4 (2021), 386-395.

K. SAITO, T. HIRASHIMA, N. MA and H. MURAKAWA
Characteristic-tensor Method for Efficient Estimationof Stress-Intensity Factors of Three-Dimensional
CracksEng. Fract. Mech., 257, 11 (2021), 1-21.

S. MAEDA, K. IKUSHIMA, M. SHIBAHARA, T. MIWA,
K. YAMAZAKI, K. NISHIHARA, H. TAKEDA and N. MA
Study on Prevention Method of Hot Cracking Under
Butt Welding
Q. J. Jpn. Weld. Soc., 39, 4 (2021), 396-405.

Y. LIU, P. WANG, H. FANG and N. MA
Mitigation of Residual Stress and Deformation
Induced by TIG Welding in Thin-Walled Pipes
through External Constraint
J. Mater. Res. Technol-JMRT, 15, 11 (2021),
4636-4651.

A. ZUO, X. LIU, C. SHAO, M. FAN, N. MA and F. LU
In-situ DIC Study on LCF Behavior of Retired Weld
Joint Subjected to Prolonged Service at ElevatedTemperature
Acta Metall. Sin., 39 (2021), 1-12.

33

H. SERIZAWA, K. INOSE, R. OHASHI, Y. SUGIMOTO, T. MINODA
and T. MURAKAMI
Study on Tensile Shear Strength of Dissimilar Lap
Joints for Multi-Material Structures
Proc. Syposium on Joining Technologies inAdvanced Automobile Assembly 2021., (2021),
130-137 (in Japanese).

T. KAWABATA, H. KOSUGE, T. OZAWA and Y. MIKAMI
Simplified Prediction Method of Stress Intensity
Factor in Mid-Thick Plane in 3D Cracked Body andIts Difference from 2D Handbook Formula
J. Test. Eval., 50, 1 (2021).
C. SAWANISHI, H. MATSUDA, T. TAGAWA, R. IKEDA and
S. TSUTSUMI
Influence of Shape of Weld Toe and Hardness ofWeld Metal on Fatigue Properties in GMA Welded
Fillet Lap Joint of UHSS Sheet
Q. J. Jpn. Weld. Soc., 38, 4 (2021), 448-457 (inJapanese).

H. SERIZAWA, K. INOSE, R. OHASHI, Y. SUGIMOTO, T. MINODA
and T. MURAKAMI
Study on Shear Fatigue Properties of Dissimilar Lap
Joints for Multi-Material Structures
Proc. Syposium on Joining Technologies inAdvanced Automobile Assembly 2021., (2021),
147-153 (in Japanese).

S. TSUTSUMI, H. NAGAHAMA, Y. KIYOKAWA and R. FINCATO
Fatigue Crack Propagation Life Assessment of Steels
Predicted by Local Elastoplasticity Response Surface Crack Propagation Property in Stress
Concentration Field J. Jpn. Soc. Civil Eng. Ser. A2, 76, 2 (2021),
I_399-I_410 (in Japanese).

P. GENG, G. QIN, H. MA, J. ZHOU and N. MA
Linear Friction Welding of Dissimilar Ni-based
Superalloys:
Microstructure
Evolution
andThermo-Mechanical Interaction
J. Mater. Res. Technol-JMRT, 11 (2021), 633-649.
P. GENG, N. MA, H. MA, Y. MA, K. MURAKAMI, H. LIU,
Y. AOKI and H. FUJII
Flat Friction Spot Joining of Aluminum Alloy to
Carbon Fiber Reinforced Polymer Sheets: Experimentand Simulation
J. Mater. Sci. Technol., 107 (2021), 266-289.

S. TSUTSUMI, G. DAIMON and R. FINCATO
Study on the Thickness Effect to Fatigue Strength ofJoint
J. Jpn. Soc. Civil Eng. Ser. A2, 76, 2 (2021),
I_389-I_397 (in Japanese).
S. HAMADA, M. BEPPU, S. TSUTSUMI and H. ICHINO
A Fundamental Study on the Effects of Stress
Triaxiality on the Dynamic Mechanical Properties ofSS400 SteelJ. Jpn. Soc. Civil Eng. Ser. A2, 76, 2 (2021),
I_379-I_387 (in Japanese).

Y. MIKAMI
Consideration of the Effect of Residual StressDistribution in Performance Evaluation of Welded
Joints and Its Issues
J. Smart Process., 10, 1 (2021), 20-25 (in Japanese).
T. TAGAWA, Y. MORIKAGE, T. KUBO, T. HANDA, Y. MIKAMI
and T. KAWABATA
Experimental Proof of Reverse Bending Techniquefor Modifying Weld Residual Stress in Weld CTOD
Specimen and Comparison of Effect with Other
Techniques
J. Test. Eval., 49, 6 (2021).

Y. WANG, Y. LUO, Y. KOTANI and S. TSUTSUMI
Generalized SCF Formula of Out-of-Plane Gusset
Welded Joints and Assessment of Fatigue Life
Extension by Additional Weld
Materials, 14, 5 (2021), 1249.
R. GADALLAH, S. TSUTSUMI, Y. AOKI and H. FUJII
Investigation of Residual Stress within Linear Friction
Welded Steel Sheets by Alternating Pressure via
X-ray Diffraction and Contour Method Approaches
J. Manufacturing Processes, 64 (2021), 1223-1234.

T. OZAWA, H. KOSUGE, Y. MIKAMI and T. KAWABATA
Typical Local Compression Effect on Crack Front
Straightness and Fracture Toughness
Weld. World, 65 (2021), 1777-1790.

34

Y. KOTANI, T. TSUYAMA, A. BUERLIHAN and S. TSUTSUMI
Improvement of Fatigue Strength of Out-Of-Plane
Gusset Welded Joints by Controlled-Additional Weld
Bead Shape and Toe Grinding
J. Struct. Eng., A, 67A (2021), 497-508 (inJapanese).

S. TSUTSUMI, R. FINCATO, T. SAKAI, K. TERADA andD. S. PAOLINO
Influence of Soft/hard Inclusions on the StressDistribution and the Slip Formation in a Polycrystal
MatrixEighth Int. Conf. on Very High Cycle Fatigue(VHCF8), (2021), 1-4.

J. TAMARI, T. ISHIKAWA, M. HIROHATA and S. TSUTSUMI
Fatigue Strength Improvement for Weld Root ofSole Plate by Filling Resin
Proc. Tenth Int. Conf. on Bridge Maintenance,
Safety and Management (IABMAS 2020), (2021),
1-8.

T. SAKAI, A. NAKAGAWA, D. S. PAOLINO, S. TSUTSUMI,
R. FINCATO, W. LI and N. OGUMA
Formation Mechanism of FGA around Interior
Inclusion Based on Discrete Micro-Debondings andTheir Coalescence in Very High Cycle Fatigue
Eighth Int. Conf. on Very High Cycle Fatigue(VHCF8), (2021), 1-6.

H. SHIBATA, K. SATOH, H. HORIKAWA, K. HAMASAKI,
L. BO and S. TSUTSUMI
Proposal of Modified Ens Method Considering
Effective Stress Concentration Factor -application to
Butt Weld Joints with Backing PlateProc. 24th JSCE Applied Mechanics Symp., (2021),
S03C-03 (in Japanese).

Y. WANG and S. TSUTSUMI
Fatigue Life Extension by Additional Weld and Its
Assessment by High Performance SCF Formula
Considering Spline Bead Profile
IIW Commission XIII (Fatigue of weldedcomponents
andstructures),(2021),XIII-2907-2021.

S. HAMADA, M. BEPPU, S. TSUTSUMI and H. ICHINO
A Study on the Perforation Failure of Steel Plates
Subjected to a Flat -nose Projectile ImpactProc. 24th JSCE Applied Mechanics Symp., (2021),
S03C-04 (in Japanese).

K. YOSHIDA, H. WAKAMATSU, E. MORINAGA, S. TSUTSUMI and
T. KUBO
Design of Developable Surfaces Using the Given
Data Points
J. Adv. Mech. Des. Syst. Manuf., 15, 5 (2021),
21-00131.

K. SHIRAI, H. WAKAMATSU, E. MORINAGA, T. KUBO and
S. TSUTSUMI
3D Shape Prediction of a Paper Model of a Brassiere
Cup toward Its Design Support - 2nd Report:
Application to a Three Piece Brassiere Cup J. Text. Eng., 67, 3 (2021), 41-56 (in Japanese).

Y. WANG, S. TSUTSUMI, T. KAWAKUBO and H. FUJIIMicrostructure and Mechanical Properties ofWeathering Mild Steel Joined by Friction Stir
Welding
Mater. Sci. Eng. A., 823, 141715 (2021), 1-10.

S. TSUTSUMI and K. MORITA, M. MOURI
Paper Review of “Numerical Investigation on Fatigue
Crack Initiation and Propagation Lives for Non-Load
Carrying Fillet Welded Joint Considering Cyclic
Elastoplasticity Response of Steel”
J. Japan Welding Soc., 90, 5 (2021), 3 (in Japanese).

J. TAMARI, T. ISHIKAWA, M. HIROHATA and S. TSUTSUMI
Fatigue Strength Improvement for Weld Root ofSole Plate by Filling Resin
Steel Constr. Eng., 28, 110 (2021), 51-60 (inJapanese).

S. TSUTSUMIPaper Review Of“Effect of Heat Affected Zone
Microstructure Behavior under Cyclic Loading on
Fatigue Life of Weld Joint”
J. Japan Welding Soc., 90, 5 (2021), 4 (in Japanese).

T. ISHIKAWA and S. TSUTSUMI
Development of Fatigue Life Extension Technology
of Weld Joint by Hammer Peening
Manuf. Technol., 73, 4 (2021), 8-11 (in Japanese).

35

Y. WANG, K. UEDA, R. NAGAO and S. TSUTSUMI
Fatigue Life Assessment of Welded Joints by
Combined Measurements Using DIC and XRD
Materials, 14 (2021), 5802.

S. NIU, M. LOU, Y. MA and Y. LI
Study on the Microstructure and Mechanical
Performance for Integrated Resistance Element
Welded Aluminum Alloy/press Hardened Steel Joints
Mater. Sci. Eng. A., 800 (2021), 140329.

R. GADALLAH, H. MURAKAWA, K. IKUSHIMA, M. SHIBAHARA
and S. TSUTSUMI
Numerical Investigation on the Effect of Thickness
and Stress Level on Fatigue Crack Growth inNotched Specimens
Theor. Appl. Fract. Mec., 116 (2021), 103138.

Y. MA, A. TAKIKAWA, J. NAKANISHI, K. DOIRA, T. SHIMIZU,
Y. LU and N. MA
Measurement of Local Material Properties andFailure Analysis of Resistance Spot Welds ofAdvanced High-Strength Steel Sheets
Mater. Des., 201, 3 (2021), 1-10.

K. MORITA, M. MOURI, A. BUERLIHAN, R. FINCATO and
S. TSUTSUMI
Numerical Investigation on Fatigue Crack Initiation
and Propagation Lives for Non-Load Carrying Fillet
Welded Joint Considering Cyclic Elasto-Plasticity
Response of SteelJ. Jpn. Soc. Civil Eng. Ser. A2, 76, 2 (2021),
I_143-I_152 (in Japanese).

S. REN, Y. MA and N. MA
Development of FEA-ANN Integrated Approach forProcess Optimization of Coaxial One-Side Resistance
Spot Welding of Al5052 and CFRP
J. Manuf. Sci. Eng, 144 (2021), 1-13.
S. REN, Y. MA, N. MA, S. SAEKI and Y. IWAMOTO
3-D Modelling of the Coaxial One-Side Resistance
Spot Welding of AL5052/CFRP Dissimilar Material
J. Manufacturing Processes, 68 (2021), 940-950.

A. BUERLIHAN, R. FINCATO and S. TSUTSUMI
Numerical Study on Fatigue Notch Sensitivity ofHigh and Middle Strength Carbon Steels for Weld
Structures
Proc. 24th JSCE Applied Mechanics Symp., (2021),
SS01A-04.

Y. MA, Y. YU, P. GENG, R. IHARA, K. MAEDA, R. SUZUKI,
T. SUGA and N. MA
Fracture Modeling of Resistance Spot Welded
Ultra-High Strength Steel Considering the Effect of
Pre-Crack
Mater. Des., 210 (2021), 110075.

R. FINCATO, S. TSUTSUMI, A. ZILIO, G. MAZZUCCO and
V. SALOMONI
Implicit
Numerical
IntegrationoftheYoshida-Uemori Two-Surface Plasticity Model with
Isotropic Hardening Stagnation
Proc. 24th JSCE Applied Mechanics Symp., (2021),
S02A-06.

S. REN, Y. MA, N. MA, Q. CHEN and H. WU
Digital Twin for the Transient Temperature
Prediction during Coaxial One-Side Resistance Spot
Welding of Al5052/CFRP
J. Manuf. Sci. Eng, 144, 3 (2021), 1-8.

R. FINCATO, S. TSUTSUMI, A. ZILIO, G. MAZZUCCO and
V. SALOMONI
Fully Implicit Numerical Integration of the
Yoshida-Uemori Two-Surface Plasticity Model with
Isotropic Hardening Stagnation
Fract. Struct. Integrity, 57 (2021), 114-126.

Y. MA, B. YANG, S. HU, H. SHAN, P. GENG, Y. LI and
N. MA
Combined Strengthening Mechanism of Solid-State
Bonding and Mechanical Interlocking in Friction
Self-Piercing Riveted AA7075-T6 Aluminum Alloy
JointsJ. Mater. Sci. Technol., 105 (2021), 109-121.

R. FINCATO and S. TSUTSUMI
Coupled Elasto-Viscoplastic and Damage Model
Accounting for Plastic Anisotropy and Damage
Evolution Dependent on Loading Conditions
Comput. Methods Appl. Mech. Engrg., 387 (2021),
114165.

H. XIA, Y. MA, J. SU, C. TAN, L. LI and N. MA
Influence of Heat Input on the Laser Welded
Steel/CFRP Lapped Joints
Compos. Struct., 2022 (2021), 1-13.

36

[General Welding]
M. TSUKAMOTO and R. HIGASHINO
Committee of Joining and Materials Processing withHigh Energy Beams
J. Japan Welding Soc., No. 5, vol. 90 (2021), 64-70(in Japanese).
H. SERIZAWA, M. IYOTA, T. OGURA, M. KIMURA, T. SATSUTA,
T. YASUI and T. IKESHOJI
Committee of Joining and Materials Processing forLight Structures
J. Japan Welding Soc., 90, 5 (2021), 71-81 (inJapanese).
H. MA, G. QIN, P. GENG, S. WANG and D. ZHANG
Microstructural Characterisation and Corrosion
Behaviour of Aluminium Alloy/steel Hybrid Structure
Produced by Friction Welding
J. Manufacturing Processes, 61 (2021), 349-356.
G. QIN, P. GENG, Y. CHEN and W. REN
Numerical Analysis of Stress Evolution in MIG Arc
Brazing-fusion Welding of Al Alloy to Galvanized
Steel Plate
J. Mech. Eng., 57, 2 (2021), 87-96.
D. ZHANG, G. QIN, P. GENG and H. MA
Study of Plastic Flow on Intermetallic Compounds
Formation in Friction Welding of Aluminum Alloy to
Stainless SteelJ. Manufacturing Processes, 64 (2021), 20-29.
P. GENG, G. QIN, H. MA, J. ZHOU, C. ZHANG and N. MA
Numerical Modelling on the Plastic Flow andInterfacial Self-Cleaning in Linear Friction Welding ofSuperalloys
J. Mater. Process. Technol., 296 (2021), 117198.
H. MA, G. QIN, Z. DANG and P. GENG
Interfacial Microstructure and Property of 6061
Aluminium Alloy/stainless Steel Hybrid Inertia
Friction Welded Joint with Different Steel Surface
Roughness
Mater. Charact., 179 (2021), 111347.
D. ZHANG, G. QIN, H. MA and P. GENG
Non-uniformity of Intermetallic Compounds andProperties in Inertia Friction Welded Joints of 2A14
Al Alloy to 304 Stainless SteelJ. Manufacturing Processes, 680 (2021), 834-842.

37

Joining and Welding Research Institute,
Osaka University, Japan
11-1 Mihogaoka, lbaraki, Osaka 567-0047, Japan
Telephone +81-6(6877)5111
Facsimile +81-6(6879)8689
Web Site

http://www.jwri.osaka-u.ac.jp/