Organization and Staff (December 2019)
Director

Dr. TANAKA Manabu

1. Research Division of Materials Joining Process
1) Energy Control of Processing
Professor
Guest Professor
Guest Professor
Guest Professor
Guest Associate Professor
Associate Professor
Assistant Professor

5. Joint Interface Microstructure Characterization Room
Associate Professor

Dr. TANAKA Manabu
Dr. NAKATA Kazuhiro
Dr. MITA Tsuneo
Dr. NISHIYAMA Hideya
Dr. HOSOI Koichi
Dr. SHIGETA Masaya
Dr. TASHIRO Shinichi

Dr. TAKAHASHI Makoto

Dr. SETSUHARA Yuichi
Dr. ONO Kouichi
Dr. TAKENAKA Kousuke

6. JFE Welding Research Alliance Laboratories
Director, Professor (Supplementary Assignment)
Guest Professor
Guest Professor
Professor (Supplementary Assignment)
Professor (Supplementary Assignment)
Professor (Supplementary Assignment)
Professor (Supplementary Assignment)
Associate Professor (Supplementary Assignment)
Associate Professor (Supplementary Assignment)
Associate Professor (Supplementary Assignment)

Dr. TANAKA Manabu
Dr. OI Kenji
Dr. TAGAWA Tetsuya
Dr. MINAMI Fumiyoshi
Dr. FUJII Hidetoshi
Dr. ITO Kazuhiro
Dr. TSUKAMOTO Masahiro
Dr. SHIGETA Masaya
Dr. TSUTSUMI Seiichiro
Dr. MIKAMI Yoshiki

2) Energy Transfer Dynamics
Professor
Guest Professor
Associate Professor
3) Manufacturing Process
Professor
Specially Appointed Researcher
Specially Appointed Researcher
Guest Researcher
Guest Researcher

Dr. NISHIKAWA Hiroshi
Dr. SHEN Yu-an
Mr. SASAKI Kishichi
Mr. KOHINATA Shigeru
Mr. HOU Juncai

7. DAIHEN Welding and Joining Research Alliance Laboratories
Professor (Supplementary Assignment)
Dr. INOUE Hiroshige
Professor (Supplementary Assignment)
Dr. TANAKA Manabu
Guest Professor
Dr. ERA Tetsuo
Guest Researcher
Dr. KADOTA Keiji
Professor (Supplementary Assignment)
Dr. TSUKAMOTO Masahiro

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

Dr. TSUKAMOTO Masahiro
Dr. SATO Yuji
Ms. HIGASHINO Ritsuko
Mr. MASUNO Shinichiro
Mr. HORI Eiji

5) Advanced Engineering Science
Guest Professor

Dr. DEMURA Masahiko

2. Research Division of Materials Joining Mechanism
1) Welding Mechanism
Professor
Guest Professor
Associate Professor
Associate Professor (Supplementary Assignment)
Assistant Professor

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

2) Joint Interface Structure and Formation Mechanism
Professor
Specially Appointed Professor
Associate Professor
Specially Appointed Associate Professor
Specially Appointed Associate Professor
Assistant Professor

Dr. FUJII Hidetoshi
Dr. USHIODA Kousaku
Dr. NAGIRA Tomoya
Dr. MORISADA Yoshiaki
Dr. AOKI Yasuhiro
Dr. LIU Huihong

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

Dr. KONDOH Katsuyoshi
Dr. MA Qian
Dr. MIURA Hideshi
Dr. UMEDA Junko
Dr. SHITARA Kazuki
Mr. HORIE Mitsuo
Ms. FUJII Hiroko
Mr. MINAMITANI Ryoji

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

Dr. MA Ninshu
Dr. SERIZAWA Hisashi
Dr. NARASAKI Kunio
Dr. KAWAHARA Atsushi
Mr. LI Wangnan

2) Structural Integrity and Failure Assessments
Professor
Assistant Professor

Dr. MINAMI Fumiyoshi
Dr. TAKASHIMA Yasuhito

3) Joining Design and Dependability
Professor (Supplementary Assignment)
Associate Professor
Specially Appointed Associate Professor
Specially Appointed Researcher
4) Reliability Evaluation & Simulation
Professor
Associate Professor
Assistant Professor
4. Smart Processing Research Center
Director, Professor
1) Smart Coating Processing
Professor
Assistant Professor
Specially Appointed Researcher

Dr. MINAMI Fumiyoshi
Dr. TSUTSUMI Seiichiro
Dr. FINCATO Riccardo
Dr. GADALLAH Ramy Saeed
ShafeakDr. INOUE Hiroshige
Dr. KADOI Kota
Dr. TOKITA Shun
Dr. FUJII Hidetoshi
Dr. NAITO Makio
Dr. KOZAWA Takahiro
Dr. KONDO Akira

2) Nano/Micro Structure Control
Professor
Specially Appointed Researcher

Dr. KIRIHARA Soshu
Dr. TAKAMATSU Nobuyuki

4) Smart Green Processing
Professor (Supplementary Assignment)

Dr. NISHIKAWA Hiroshi5) Life-Innovation Materials Processing
Associate Professor

Dr. ABE Hiroya

8. Hitachi Zosen Advanced Welding Technology Joint Research Chair
Guest Professor
Dr. KITAGAWA Akikazu
Guest Professor
Dr. KATAYAMA Seiji
Professor (Supplementary Assignment)
Dr. TANAKA Manabu
Professor (Supplementary Assignment)
Dr. MINAMI Fumiyoshi
Professor (Supplementary Assignment)
Dr. TSUKAMOTO Masahiro
Specially Appointed Associate Professor
Dr. NAKATANI Mitsuyoshi
Guest Associate Professor
Dr. YAMAZAKI Yosuke
Associate Professor (Supplementary Assignment)
Dr. SHIGETA Masaya
Specially Appointed Assistant Professor
Mr. ABE Yohei
Guest Researcher
Dr. TANIGAWA Daichi
Guest Researcher
Mr. FUJIMOTO Takahiro
9. Osaka Fuji "Advanced Functional Processing" Joint Research Chair
Specially Appointed Professor
Dr. ABE Nobuyuki
Professor (Supplementary Assignment)
Dr. TSUKAMOTO Masahiro
Specially Appointed Assistant Professor
Mr. HAYASHI Yoshihiko
Specially Appointed Assistant Professor
Mr. AZUMI Kazuyuki
Guest Researcher
Mr. YONEYAMA Mikio
Guest Researcher
Mr. TATSUMI Yoshihiro
10. "Advanced Joint Production System" Joint Research Chair
Guest Associate Professor
Mr. AMASAKI Tetsuya
Guest Researcher
Mr. YAMAGUCHI Hiroshi
11. Advanced Joining Technology Joint Research Chair
Guest Academic Staff
Guest Academic Staff
Guest Academic Staff
Guest Academic Staff
Guest Academic Staff

Mr. OTANI Yasuhiro
Mr. NOGI Toshikatsu
Mr. KATUKI Makoto
Mr. YANO Yoshiaki
Mr. MURAYAMA Masatoshi

12. Development Base on Creation of Life Innovation Materials for Interdisciplinary
and International Researcher Development
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"
Leader, Professor (Supplementary Assignment)
Dr. KONDOH Katsuyoshi
Leader, Professor (Supplementary Assignment)
Dr. NISHIKAWA Hiroshi
Specially Appointed Associate Professor
Ms. KATSUMATA Mihoko
Specially Appointed Associate Professor
Ms. HASHIMOTO Chie
Specially Appointed Assistant Professor
Ms. TERANISHI Misa
Specially Appointed Assistant Professor
Dr. BAHADOR Abdollah
Specially Appointed Assistant Professor
Dr. MA Yunwu
14. R&D Project for Environmental Resources and ECO Joining
Specially Appointed Professor
Dr. TAKAHASHI Yasuo
Specially Appointed Researcher
Dr. MURAMATSU Masayasu
15. Global Collaborative Research Center for Computational Welding Science (CCWS)
Leader, Professor (Supplementary Assignment)
Dr. MA Ninshu
Guest Professor
Dr. MURAKAWA Hidekazu
Guest Professor
Dr. HIRAOKA Kazuo
Guest Professor
Dr. MATSUYAMA Kinichi
Guest Professor
Dr. CHEN Yunxia
Associate Professor (Supplementary Assignment)
Dr. SERIZAWA Hisashi
Guest Associate Professor
Dr. SHIBAHARA Masakazu
16. International Research Center for Fatigue Design of Weld Structures(FDWS)
Leader, Professor (Supplementary Assignment)
Dr. MIMAMI Fumiyoshi
Guest Professor
Dr. TERADA Kenjiro
Associate Professor (Supplementary Assignment)
Dr. TSUTSUMI Seiichiro
Assistant Professor (Supplementary Assignment)
Dr. TAKASHIMA Yasuhito
Specially Appointed Associate Professor
Dr. FINCATO Riccardo(Supplementary Assignment)
17. Industry Cooperation Office
Visiting Professor

Dr. SUGA Tetsuo

Transactions of JWRI, Vol.48, 2019
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 Structural Integrity and Failure Assessments …………………..………………….…………… 9
Dep. of Joining Design and Dependability ……………………………….…………………..……………… 10
Dep. of Reliability Evaluation & Simulation ………………………………………………….………………. 11
Smart Processing Research Center
Dep. of Smart Coating Processing …………………………………………………..…………….………….….. 12
Dep. of Nano/Micro Structure Control …………………………………………………..…………..….….….. 13
Dep. of Smart Green Processing ……………………………………………………….………………..………... 14
Dep. of Life-Innovation Materials Processing …………………………………….…………….….…….…. 15
Hitachi Zosen Advanced Welding Technology Joint Research Chair ………………….…………..… 16
Osaka Fuji "Advanced Functional Processing" Joint Research Chair ………………………..…….…. 17
Development Base on Creation of Life Innovation Materials for Interdisciplinary
and International Researcher Development ………………………………………………………………..…... 18
Center to Create Research and Educational Hubs for Innovative Manufacturing in Asia /"Division of International Collaboration Research" and"Division of Global Human Resource Development" …………………………………………..…………… 19
R&D Project for Environmental Resources and ECO Joining ……………………………….....………... 20

CONTRIBUTION TO OTHER ORGANIZATIONS ………………………………………..….….….……. 21

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, M. Tanaka and A. B. Murphy, “Investigation of the Bilayer Region of Metal Vapor in a
Helium Tungsten Inert Gas Arc Plasma on Stainless Steel by Imaging Spectroscopy”, J. Phys. D-Appl. Phys., 52,
35 (2019), 354003-(9 pages).
A. V. Nguyen, D. Wu, S. Tashiro and M. Tanaka, “Undercut Formation Mechanism in Keyhole Plasma Arc
Welding”, Weld. J., 98 (2019), 204-s-212-s.
B. Xu, S. Chen, S. Tashiro, F. Jiang, A. V. Nguyen and M. Tanaka, “Material Flow Analyses of High-Efficiency
Joint Process in VPPA Keyhole Flat Welding by X-ray Transmission System”, J. Clean Prod. (2019), in Press.
M. Shigeta and M. Tanaka, “Visualization of Electromagnetic-Thermal-Fluid Phenomena in Arc Welding”, Jpn.
J. Appl. Phys., 59 (2019), SA0805-(12 pages). [INVITED REVIEW PAPER]

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
G. Uchida, Y. Mino, T. Suzuki, J. Ikeda, T. Suzuki, K. Takenaka and Y. Setsuhara, “Decomposition andOxidation of Methionine and Tryptophan Following Irradiation with a Nonequilibrium Plasma Jet andApplications for Killing Cancer Cells”, Sci. Rep., 9 (2019), 6625/1-6625/17.
K. Takenaka, M. Endo, G. Uchida, Y. Setsuhara and A. Ebe, “Influence of Deposition Condition on Electrical
Properties of a-IGZO Films Deposited by Plasma-enhanced Reactive Sputtering”, J. Alloy. Compd, 772(2019), 642-649.
K. Takenaka, M. Endo, H. Hirayama, G. Uchida, A. Ebe and Y. Setsuhara, “Low-temperature Formation ofHigh-Mobility A-InGaZnOx Films Using Plasma-Enhanced Reactive Processes”, Jpn. J. Appl. Phys., 58(2019), 090605/1-090605/5.
K. Takenaka, Y. Setsuhara, J.G. Han, G. Uchida and A. Ebe, “High Rate Formation of Silicon Nitride Thin
Films Using Plasma-Assisted Reactive Sputtering Deposition”, Thin Solid Films, 685 (2019), 306-311.
K. Takenaka and Y. Setsuhara, “Droplet-Vaporization Behavior during Plasma-Assisted Mist Chemical
Vapor Deposition of Zinc Oxide Films”, Plasma Sources Sci. Technol., 28 (2019), 065015/1-065015/8.

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
R. Gao, S. He, Y.-A. Shen and H. Nishikawa, “Effect of Substrates on Fracture Mechanism and Process
Optimization of Oxidation-Reduction Bonding with Copper Microparticles”, J. Electronic Mater., 48, 4(2019), 2263-2271.
Y.-A. Shen, S. Zhou, J. Li, C.-H. Yang, S. Huang, S.-K. Lin and H. Nishikawa “Sn-3.0Ag-0.5Cu/Sn-58Bi
Composite Solder Joint Assembled Using a Low-Temperature Reflow Process for PoP Technology”,
Mater. Des., 183 (2019), 108144.
Y.-A. Shen, C. M. Lin, J. Li, R. Gao and H. Nishikawa, “Suppressed Growth of (Fe, Cr, Co, Ni, Cu)Sn2
Intermetallic Compound at Interface between Sn-3.0Ag-0.5Cu Solder and FeCoNiCrCu0.5 Substrateduring Solid-state Aging”, Sci. Rep., 9 (2019), 10210.

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
K. Koda, K. Takenaka, and M. Tsukamoto, “Laser-fluence Dependence of Microstructure Formed on Nickel by
Backward Pulse Laser Deposition", Appl. Surf. Sci., 485 (2019) 128–132.
Y. Sato, M. Tsukamoto, T. Shobu, Y. Funada, Y. Yamashita, T. Hara, M. Sengoku, Y. Sakon, T. Ohkubo,
M. Yoshida and N. Abe, "In Situ X-ray Observations of Pure-Copper Layer Formation with Blue Direct Diode
Lasers", Appl. Surf. Sci., 480 (2019), 861-867.
K. Takenaka, M. Tsukamoto, M. Hashida, S. Masuno, H. Sakagami, M. Kusaba, S. Sakabe, S. Inoue,
Y. Furukawa and S. Asai, "Ablation Suppression of a Tutanium Surface Interacting with a Two-Color DoublePulse Femtosecond Laser Beam", Appl. Surf. Sci., 478 (2019), 882-886.

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

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

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.

Measurement and simulation of deformation behavior at
crystalline grain scale of austenitic stainless steel. (a)Orientation map obtained by electron backscatter
diffraction (EBSD) technique. (b) Measurement of
deformation by digital image correlation (DIC) method.

Major Papers
P. K. Parchuri, S. Kotegawa, H. Yamamoto, K. Ito and A. M. K. Hokamoto, “Benefits of Intermediate-Layer
Formation at the Interface of Nb/Cu and Ta/Cu Explosive Clads”, Mater. Des., 166 (2019), 107610.
P. K. Parchuri, S. Kotegawa, K. Ito, H. Yamamoto, A. Mori, S. Tanaka and K. Hokamoto, “Cladding of a CrackFree W Plate on Cu Plates Using Explosive Welding at Higher Collision Velocity with Lower Collision Angle”,
Results Mater., 5, 100023 (2019), 1-7.
A. Sharma, J. S. Panchagnula, M. Kumar, K. Ito, P. K. Parchuri, S. Simhambhatla and S. Reddy, “Wire Arc Additive
Manufacturing, Thermal Modelling, Build Direction, Mechanical Properties”, J. Manufacturing Processes, 40(2019), 46-58.
Y. Mikami, W. Sadakane and M. Mochizuki, “Numerical Simulation of Microscopic Residual Stress Evolution in
Polycrystalline Aggregate Subjected to Weld Thermal Cycle”, Weld. World, 64, 1 (2019), 105-114.

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
S.-J. Lee, T. M. Park, J.-H. Nam, W. S. Choi, Y. Sun, H. Fujii and J. Han, “The Unexpected Stress-Strain Responseof Medium Mn Steel after Friction Stir Welding”, Mater. Sci. Eng. A., 744 (2019), 340-348.
Y. Sun, H. Fujii, S. Zhu and S. Guan, “Flat Friction Stir Spot Welding of Three 6061-T6 Aluminum Sheets”,
J. Mater. Process. Technol., 264 (2019), 414-421.
Y. Aoki, R. Kuroiwa, H. Fujii, G. Murayama and M. Yasuyama, “Linear Friction Stir Welding of Medium Carbon
Steel at Low Temperature”, ISIJ Int., 59, 10 (2019), 1853-1859.
T. Nagira, X. C. Liu, K. Ushioda, Y. Iwamoto, G. Ano and H. Fujii, “Role of Annealing Twinning in Microstructural
Evolution of High Purity Silver during Friction Stir Welding, Sci. Technol. Weld. Join., 24 (2019), 644-651.
H. Liu, K. Ushioda and H. Fujii , “Elucidation of Interface Joining Mechanism during Friction Stir Welding
through Cu/Cu-10Zn Interfacial Observations”, Acta Mater., 166 (2019), 324-334.

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) Titanium materials with high-strength and ductility via atomic-scale microstructure optimization
by first principle calculation(2) Nano-carbon materials reinforced metal matrix composites through interfacial mechanics(3) Surface modification by 3D-nano structuring and application to novel biomaterials(4) Direct bonding of plastic materials to metals by molecular structure control(5) Ni-rich TiNi shape memory alloys with nano-precipitation and expansion ability evaluation inapplication to stent devices

Dependence of strength contribution by CNTs on the aspect ratio or length of CNTs and Interaction between
matrix dislocations and CNTs with a small and large length in metal grains, MRS Bulletin, 44 (2019) 40-45.

Major Papers
A. Bahador, J. Umeda, S. Tsutsumi, E. Hamzah, F. Yusof, H. Fujii and K. Kondoh, “Asymmetric Local Strain,
Microstructure and Superelasticity of Friction Stir Welded Nitinol Alloy”, Mater. Sci. Eng. A., 767 (2019), 138344.
J. Umeda, K. Kondoh, H. Sannomiya, T. Luangvaranunt, M. Takahashi and H. Nishikawa, “Interfacial Reaction
Behavior and Mechanical Properties of Pure Aluminum and Magnesium Alloy Dissimilar Materials Fabricatedby Hot Press and Heat Treatment”, Mater. Charact., 157 (2019), 109879.
X. Zhang, S. Li, B. Pan, D. Pan, L. Liu, X. Hou, M. Chu, K. Kondoh and M. Zhao, “ Regulation of Interface between
Carbon Nanotubes-Aluminum and Its Strengthening Effect in CNTs Reinforced Aluminum Matrix
Nanocomposites”, Carbon, 155 (2019), 686-696.
B. Chen, K. Kondoh, J. Umeda, S. Li, L. Jia and J. Li, “Interfacial In-Situ Al2O3 Nanoparticles Enhance Load Transfer
in Carbon Nanotube (CNT)-reinforced Aluminum Matrix Composites”, J. Alloy. Compd, 789 (2019), 25-29.
K. Kondoh, R. Ikemasu, J. Umeda, S. Kariya and A. Khantachawana, “ Microstructural and Mechanical Propertiesof α-Titanium Sintered Material via Thermal Decomposition of Additive Chromium Oxide Particles”, Mater. Sci.
Eng. A., 739, 2 (2019), 491-498.

7

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

Research subjects(1) Computational and experimental study of nonlinear thermo-mechanical-metallurgicalphenomena in multi-materials solid-state joining, fusion welding and additive manufacturing.
(2) Field Measurement and FEM (M-FEM) for identification of internal residual stress and fracture
criteria of materials and various types of joints.
(3) AI for full manufacturing processes including metal forming, joining, welding and assembling ofstructures.

Digital twin of coaxial one-side resistance Digital twin of coaxial one-side resistance spot welding(COS-RSW) of aluminum and CFRP [1]e spot welding (COS-RSW) of aluminum and CFRP [1]

A novel friction self-piercing riveting (F-SPR) process

Zircaloy-SiC/SiC joint by laser

Major Papers
S. Ren, Y. Ma, S. Saeki, Y. Iwamoto and N. Ma, “Numerical Analysis on Coaxial One-Side Resistance Spot
Welding of Al5052 and CFRP Dissimilar Materials”, Materials and Designs (2019), 1-10.
Y. Ma, B. Yang, M. Lou, Y. Li and N. Ma, “Effect of Mechanical and Solid-State Joining Characteristics on TensileShear Performance of Friction Self-Piercing Riveted Aluminum Alloy AA7075-T6 Joints”, J. Mater. Process.
Technol., 278 (2019), 116543(10pages).
H. Serizawa, N. Nakazato, Y. Sato, M. Tsukamoto, J. S. Park and H. Kishimoto, “Experimental Studies on
Joinability of Zircaloy and SiC/SiC Composite with Titanium Powder”, IJCES, 1 (2019), 56-62.
Y. Li, Y. Wei, X. Luo, C. Li and N. Ma, “Correlating Particle Impact Condition with Microstructure and Propertiesof the Cold-Sprayed Metallic Deposits”, J. Mater. Sci. Technol. 40, 1 (2019), 185-195.
B. Vicharapu, H. Liu, H. Fujii, K. Narasaki, N. Ma and A. De, “Probing Residual Stresses in Stationary Shoulder
Friction Stir Welding Process”, Int. J. Adv. Manuf. Technol. (2019), 91-98.

8

Research Division of Materials Joining Assessment, Dep. of Structural Integrity
and Failure Assessments
Research summary
The welding & joining design should use the properties and qualities of materials to their best
advantage in service conditions. A need has been increased for more creative joint design andmanufacturing in the industry. This department focuses on the development of a procedure for
fitness-for-service assessment, in particular fracture assessment of metallic structures constructedby joining & welding. The methodology is founded on the local approach to fracture, which enables
the transferability analysis between the strength of fracture toughness specimen and theperformance of structural component. With this procedure, the critical allowance of flaw anddamage in service conditions is predicted. The results are published as national and international
standards or guidelines for user friendliness.

Research subjects(1) Structural integrity assessment by the Weibull stress approach(2) Development of fitness-for-service assessment procedure for welded structures in service(3) Interface strength evaluation of dissimilar joints(4) Fracture performance assessment under dynamic loading(5) Science of go/no-go of dynamic crack propagation

Dynamic analysis of stress-strain fields
in Charpy specimen of dissimilar joints

Structural integrity assessment of weld structuresby the Weibull stress criterion
Development of international fracture assessment
standard, ISO 27306, for steel structures

Major Papers
Y. Takashima, Y. Ito, F. Lu and F. Minami, “Fracture Toughness Evaluation for Dissimilar Steel Joints by Charpy
Impact Test”, Weld. World, 63, 5 (2019), 1243-1254.
Y. Takashima, T. Kawabata, R. Deguchi, S. Yamada and F. Minami, “Increase in Micro-Cracks Beneath Cleavage
Fracture Surface in Carbon Steel ESSO Specimens”, Theor. Appl. Fract. Mec., 101 (2019), 365-372.
F. Yanagimoto, T. Hemmi, Y. Suzuki, Y. Takashima, T. Kawabata and K. Shibanuma, “Contribution of Grain Size
to Resistance against Cleavage Crack Propagation in Ferritic Steel”, Acta Mater., 177 (2019), 96-106.
G. An, J.-U. Park, M. Ohata and F. Minami, “Fracture Assessment of Welded Joints of High-Strength Steel in
Pre-Strained Condition”, Appl. Sci., 9 (2019)
T. Kawabata, F. Tonsho, Y. Nishizono, N. Nakamura and Y. Takashima, “Controlling Factors for Roughness
Increases on Cleavage Fracture Surfaces and Crack Branching in Polycrystalline Steel”, Theor. Appl. Fract. Mec.,
100 (2019), 171-180.
9

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 tool (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

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）

Numerical simulation of mechanicalfatigue phenomena

Major Papers
S. Tsutsumi and R. Fincato , “Cyclic Plasticity Model for Fatigue with Softening Behaviour below Macroscopic
Yielding”, Mater. Des., 165 (2019), 107573.
S. Tsutsumi, R. Fincato and H. Momii , “Effect of Tangential Plasticity on Structural Response under NonProportional Cyclic Loading”, Acta. Mech. 230, (2019), 2425-2446.
R. Gadallah and S. Tsutsumi, “Critical Investigation on the Effect of Steel Strength on Fatigue Crack Growth
Retardation Including a Single Tensile Overload”, Theor. Appl. Fract. Mec., 104 (2019), 102326.

10

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) Effect of solidification on microstructural formation and mechanical properties of high strength
steel weld metal(2) Investigation of controlling factor of weld hot cracking susceptibility and establishment of theprediction technology of weld hot cracking(3) Clarification of influential factors of corrosion resistance of stainless steel dissimilar weld(4) Analysis of solidification/transformation behavior and accurate evaluation of hot cracksusceptibility by using In-situ observation method(5) Investigation of peritectic reaction mechanism on carbon steel during welding process

Observation of solidification microstructure by liquid Sn quenching

High temperature in-situ observation bylaser microscope

Evaluation of solidification crack susceptibility by Trans-Varestraint test

Major Papers
S. Ueda, K. Kadoi, S. Tokita and H. Inoue, “Relationship between Alloy Element and Weld Solidification Cracking
Susceptibility of Austenitic Stainless Steel”, ISIJ Int., 59, 7 (2019), 1323-1329.
K. Kadoi, M. Hiraoka, K. Shinozaki and T. Obana, “Ductility-dip Cracking Susceptibility in Dissimilar Weld Metalsof Alloy 690 Filler Metal and Low Alloy Steel”, Mater. Sci. Eng. A., 756 (2019), 92-97.
C. Cheng, K. Kadoi, S. Tokita, H. Fujii, K. Ushioda and H. Inoue, “Effects of Carbon and Chromium on
Microstructure Evolution and Mechanical Properties of Friction Stir Weldment in Medium-carbon Steel”,
Mater. Sci. Eng. A., 762 (2019), 138060.

11

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, A. Kondo, K. Fukuyama, M. Naito, H. Koga, Y. Shimo, T. Saito, H. Iba, Y. Inda, T. Oono, T. Katoh and
K. Nakajima, “Bulk-type All-Solid-State Batteries with Mechanically Prepared LiCoPO4 Composite Cathodes”,
J. Solid State Electrochem., 23, 4 (2019), 1297-1302.
T. Kozawa, K. Fukuyama, A. Kondo and M. Naito, “Wet Mechanical Route to Synthesize Morphology-Controlled
NH4MnPO4·H2O and Its Conversion Reaction into LiMnPO4”, ACS Omega., 4 (2019), 5690-5695.
H. Bai, J. Hu, Y. Duan, T. Kozawa, M. Naito, J. Zhang and S. Dong, “Surface Modification of Li1.3Al0.3Ti1.7(PO4)3
Ceramic Electrolyte by Al2O3-doped ZnO Coating to Enable Dendrites-Free All-Solid-State Lithium-Metal
Batteries”, Ceram. Int., 45, 12 (2019), 14663-14668.

12

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, “Stereolithographic Additive Manufacturing of Ceramic Components with Micropatterns forElectromagnetic Wave Control”, Ceram. Mod. Thecnol., 1, 2 (2019), 84-90.

13

Smart Processing Research Center, Dep. of Smart Green Processing
Research summary
The aim of this division is to develop the environmentally conscious smart technology to reduce
the environmental impact in manufacturing, waste treatment and recycle processing. Especially, theresearch focuses on the following topics; substitution of materials to toxic free and eco-materials inelectronics assembly, the use of low environmental impact materials in joining process,enhancement of reliability of fine-pitch high density packaging, and design for reuse. Also lowtemperature joining, substitution of rare materials and precious metals to popular substances, anddevelopment of low energy consumption new smart joining process which can make highly reliable
joint are the targets of research in smart green processing department.

Research subjects(1) Promotion of toxic-free manufacturing of fine pitch high density packaging in electric
equipments and electronics(2) Interfacial reaction between lead-free solder and materials(3) Improvement of joint lifetime by controlling microstructures at interface(4) Nano-particle assisted smart bonding(5) High reliability of Cu filler conductive adhesive bonding(6) Low temperature joining of metallic glasses

Influence of Co addition to Sn-3.5Ag solder onintermetallic compound at solder/Cu interface

Addition of various particles into electricalconductive adhesives to improve the performanceof electrical conductive adhesive(a) With low melting point metal(b) With nano-particles

Major Papers
S. Zhou, Y.-A. Shen, T. Uresti, V. C. Shunmugasamy, B. Mansoor and H. Nishikawa, “Improved Mechanical
Properties Induced by In and In & Zn Double Additions to Eutectic Sn58Bi Alloy”, J. Mater. Sci. -Mater.
Electron., 30, 8 (2019), 7423-7434.
S. Zhou, C.-H. Yang, Y.-A. Shen, S.-K. Lin and H. Nishikawa, “The Newly Developed Sn-Bi-Zn Alloy with a
Low Melting Point, Improved Ductility, and High Ultimate Tensile Strength”, Mater., 6 (2019), 100300.
Z. Jin, Y.-A. Shen, S. He, S. Zhou, Y. C .Chan and H. Nishikawa, “Novel Polarity Effect on Intermetallic
Compound Thickness Changes during Electromigration in Cu/Sn-3.0Ag-0.5Cu/Cu Solder Joints”, J. Appl.
Phys., 126, 18 (2019), 185109.

14

Smart Processing Research Center, Dep. of Life-Innovation Materials Processing
Research summary
This department focuses on developments of new materials and their processing technologies
that contribute to the life-innovation, aiming to realize a sustainable and healthy society from theviewpoint of advanced process science. In particular, we will develop functional materials including
magnetorheological fluids that have human-friendly power transmission for next-generation
rehabilitation robots. In addition, we will explore processing methods for the life-innovationmaterials, based on nanostructural controls of various joint configurations including solid-liquidinterfaces.

Research subjects(1) Synthesis of Fine Particles using Solution as Reaction Field and their Function Search(2) External Stimulus Response of Fine Particle Dispersion System and its Applications(3) Development and Applications of Directed Patterning of Fine Particles on Soft Matters(4) Development and Applications of Advanced Assembling Technology of Fine Particles

Development of stimuli responsive colloidal dispersions
and their applications to 3D printing technology andfunctional fluids materials (magnetorheological fluid).

Nano / micro materials synthesized though
wet-chemical route in this laboratory, aiming
for material developments.

Major Papers
H. Abe, T. Naka, K. Sato, Y. Suzuki and M. Nakano, “Shape-Controlled Syntheses of Magnetite Microparticles
and Their Magnetorheology”, Int. J. Mol. Sci., 20, 15 (2019), 3617-1-3617-11.
H. Abe, A. Kondo and K. Sato, “Free-polymer-induced Gelation of Non-aqueous Colloids for Direct”, Ceram.
Mod. Thecnol., 1, 2 (2019), 99-103.
K. Sato, C. Iwata, N. Kannari and H. Abe, “Highly Accelerated Oxygen Reduction Reaction Kinetics in Colloidal
Processing-Derived Nanostructured Lanthanum Strontium Cobalt Ferrite/gadolinium-Doped Ceria Composite
Cathode for Intermediate-Temperature Solid Oxide Fuel Cells”, J. Power Sources, 414 (2019), 502-508.
K. Fukui, Y. Nakamura, H. Abe and Y. Suzuki, “Hydrothermal Synthesis and Electrochemical Capacitor
Application of Urchin-Like NiCo2O4 Particles: Effect of Urea Concentrations”, J. Ceram. Soc. Jpn., 127, 11 (2019),
843-848.

15

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 Co. 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 will promote thedevelopment of three dimensional overlay welding technology that realizes high wear resistanceby utilizing blue 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

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

Overlay Welding Technology using Additive Manufacturing

Flux
Hole

Solidified Flux
CavitySolidified slag

Welding direction

Wire

Pore

Melt slag

Weld metal

Melt Flux
Arc

DropletMolten pool(d) No flow of slag
Solidification(c) Calm flow (b) Active flowof slagof slag(a) Flux evaporation
Cavity formation

SAW Phenomena

Major Papers
T. Fujimoto, M. Hirano, E. Fujimoto, Y. Abe, M. Nakatani, M. Shigeta and M. Tanaka, “Effects of theShielding Gas Flow on the Blowhole Generation for Aluminum Alloys Laser Welding”, The 72nd IIW
Annual Assembly & Int. Conf., Bratislava, Slovakia (2019.7.8-13)
Y. Abe, M. Nakatani, T. Fujimoto, M. Shigeta and M. Tanaka, “Investigation of Welding Condition for
Narrow Gap Submerged Arc Welding”, The 72nd IIW Annual Assembly & Int. Conf., Bratislava, Slovakia(2019.7.8-13)

16

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, M. Tsukamoto, T. Shobu, Y. Funada, Y. Yamashita, T. Hara, M. Sengoku, Y. Sakon, T. Ohkubo, M. Yoshida
and N. Abe, “In Situ X-ray Observations of Pure-Copper Layer Formation with Blue Direct Diode Lasers”, Appl.
Surf. Sci., 480 (2019), 861-867.
K. Morimoto, M. Tsukamoto, S. Masuno, E. Hori, Y. Sato, S. Kato, K. Azumi, Y. Hayashi and N. Abe, “High
Quality Welding of Pure Copper Plate with High Intensity Blue Diode Laser”, 38th Int. Congress on
Applications of Lasers & Electro-Optics (ICALEO 2019), Orlando, FL, USA (2019.10.7-10)
E. Hori, M. Tsukamoto, S. Masuno, K. Morimoto, Y. Sato, S. Kato, K. Azumi, Y. Hayashi and N. Abe, “Influenceof Laser Wavelength on Weld Quality in Bead-On-Plate Welding of Pure Copper with High Intensity Blue
Diode Laser”, 38th Int. Congress on Applications of Lasers & Electro-Optics (ICALEO 2019), Orlando, FL, USA(2019.10.7-10)
K. Morimoto, M. Tsukamoto, S. Masuno, K. Azumi, Y. Hayashi and N. Abe, “Influence of Laser Wavelength on
Melt Pool Behavior in Welding of Thin Pure Copper Plate with Blue Diode and Fiber Lasers”,Lasers in
Manufacturing （LiM2019）, Munich，Germany (2019.6.24-27)

17

Development Base on Development of Interdisciplinary and International
Researchers for Creation of Life Innovation Materials
Research summary
The Project, Development Base on Creation of Life Innovation Materials for Interdisciplinary andInternational Researcher Development, has started from 2016 as inter-university cooperative
research project (Joining and Welding Research Institute, Osaka Univ., Institute for Materials
Research, Tohoku Univ., Laboratory for Materials and Structures, Tokyo Institute of Tech., Institute ofMaterials and Systems for Sustainability, Nagoya Univ., Institute of Biomaterials and Bioengineering,Tokyo Medical and Dental Univ., Research Organization for Nano & Life Innovation, Waseda Univ.)
This development base promotes the joint research for development of life innovation materials forapplications in the environment and medical fields through the inter-university cooperative
researches by the 6 research institutes at 6 universities.

Research subjects(1) Environmental and sustainable materials(2) Biomedical and healthcare materials(3) Base materials and technology

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 subjects(1) Environmental and sustainable materials(2) Biomedical and healthcare materials(3) Base materials and technology

Cooperation system of the six research institutes at six universities

Major Papers

G. Alkan, L. Mancic, S. Tamura, K. Tomita, Z. Tan, F. Sun, R. Rudolf, S. Ohara, B. Friedrich and O. Milosevic,“Plasmon Enhanced Luminescence in Hierarchically Structured Ag@ (Y0.95Eu0.05)2O3 Nanocomposites
Synthesized by Ultrasonic Spray Pyrolysis”, Adv. Powder Technol. (2019), 1409-1419.
Z. D. Dai, X. Z. Song, X. L. Kang, J. K. Cao, H. Abe, S. Ohara and Z. Q. Tan, “Controlled Synthesis of TiO2
Nanosheets with Exposed (001) Facets for Enhanced Photocatalytic Activity”, IOP Conf. Ser. : Mater. Sci. Eng.,
479, 1 (2019) 012120.

18

Center to Create Research and Educational Hubs for Innovative Manufacturing in
Asia
Summary
From FY 2013-FY 2018, 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 global research networks, and to cultivate global leaders in theregion.
From FY 2018 namely the second phase, based on the research network established throughformer activities, the project will continue aiming to strengthen and obtaining higher international
competency both in institution wide and in university wide through high quality international
collaborative research 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 international co-authored papers by implementing international collaborative
research with overseas universities, establish international joint laboratory, 2) Conduct practical
Global Leader Training: Implement Inbound & Outboud Coupling Internship (CIS) both overseas
and domestic which is composed of students from different majors and cultural background.

Activities(1) Strengthen International Collaborative Research: Increase number of international co-authoredpapers by implementing international collaborative research, establish international jointlaboratory(2) Conduct practical Global Leader Training: Implement Inbound & Outboud Coupling Internship(CIS) both overseas and domestic which is composed of students from different majors andcultural background.
Table.1 Some major international joint research topics in FY 2019 (Excerpt)
Partner

Research Topics

Shanghai Jiao Tong University
Shanghai Jiao Tong University
University of Technology Malaysia
University of Technology Malaysia

Coaxial one-side resistance spot welding (COS-RSW) of Al and CFRP
Friction self-piercing riveting of high strength aluminum alloy AA7075-T6
Synthesis of copper matrix composites with TiB2 particles
Microstructure control of high oxygen concentration dual phase Ti via hot extrusion

Table.2 Some major papers issued in FY 2019 (Excerpt)
Papers1
2
3
4
5

A. Bahador, Shota Kariya, Junko Umeda, Esah Hamzah, and Katsuyoshi Kondoh, Tailoring Microstructure and Propertiesof a Superelastic Ti–Ta Alloy by Incorporating Spark Plasma Sintering with Thermomechanical Processing, /Materials
Engineering and Performance (IF=1.5)/*//*, Vol. 28, PP:3012-3020 (2019).
A. Bahador, Junko Umeda, Seiichiro Tsutsumi, Farazila Yusof, Esah Hamzah, and Katsuyoshi Kondoh, Asymmetric Local
Strain, Microstructure and Superelasticity of Friction Stir Welded Nitinol Alloy, /Journal of Materials Science Engineering
A/(IF=4),Vol. 767, (2019).
A. Bahador, Junko Umeda, Esah Hamzah, Farazila Yusof, Xiaochun Li and Katsuyoshi Kondoh, *Synergetic Strengthening
Mechanisms of Copper Matrix Composites with TiO**_2 **Nanoparticles*, */Journal of Materials Science Engineering A(IF=4)/*/,/ Vol. 772, pp:138797,(2020).
Sendong Ren, Yunwu Ma, Shuhei Saeki, Yoshiaki Iwamoto, Ninshu Ma, Numerical analysis on coaxial one-side resistancespot welding of Al5052 and CFRP dissimilar materials. Materials &Design, 2020. 188: p. 108442.
Yunwu Ma, Bingxin Yang, Ming Lou, Yongbing Li, Ninshu Ma, Effect of mechanical and solid-state joining characteristics
on tensile-shear performance of friction self-piercing riveted aluminum alloy AA7075-T6 joints. Journal of Materials
Processing Technology, 2020, 278, 116543

Table. 3 List of Coupling Internship in FY 2019
Location

Host Company

Partner University

Thailand
Vietnam
MyanmarIndonesia
Aioi, Japan
Kobe, JapanOTC Daihen
IHI Infrastructure Asia
J&M Steel Solutions
Cilegon Fabricators
IHI Aioi Works
Daihen Corporation

Kasetsart Univ.
Hanoi Univ. of Science and Tech.
Yangon Tech. Univ.
Indonesia Univ.
Indonesia Univ.(Indonesia)
King Mongkut Univ. of Tech. Thonburi (Thailand)19

R&D Project for Environmental Resources and ECO Joining
Research summary
We study concerning the energy system/environmental resources and ECO-joining in this project.
An environment harmony energy device, for example, Mg-air battery is being developed to prepare
lighting for blackouts due to natural disasters of earthquakes and typhoons. It is, also, very
important to improve energy efficiency and to save resources by establishing bonding technologies
adequate for manufacturing ecological products without toxic substances. Micro-joining processes
for advanced electronic assembly such as wire and ribbon bonding have been studied. These microjoining processes can be applied as a low temperature bonding method to ECO electronic
packaging. This is applied to rapid bonding of dissimilar materials. Also, the study of joint-defectdetection is necessary to repair and restore the concrete infra-structures. We have conducted thedefect detection, using a laser Doppler technique and AI (artificial intelligence) deep learning
system. Establishment of the way to sustainable human society overcoming global environmental
problems is the final purpose of the R&D project.

Research subjects(1) Cathode materials design of Mg-air battery(2) Improvement of structures of Mg-air battery for establishing the long lift and high power(3) Development of Mg-air battery for charging smartphones(4) Solid state micro joining (ultrasonic joining) for power electronic packaging(4) Interfacial nanostructures between wide-gap semiconductors and their electrodes.
(5) Study of joint-defect detection of infra-structures, using the laser Doppler technique and Al deeplearning system(6) Study of separation and collection of toxic substances(7) Study of sustainable system for cleating environmental resources.

In-situ observation results (video captures) of the bonding
interface between Al ribbon and silica substrate taken at Frate= 103 fps. The bonding condition was Fb = 7 N and Pu = 4 W.
(a) t = 0 ms, (b) t = 1 ms immediately after introducing
ultrasonic vibration, (c) Apparent bonded area increases at t =5 ms, (d) Apparent bonded area decreases at t = 10 ms due to
Al ribbon warping; (e) t = 20 ms, (f) Central belt zone begins
to be observed at t = 50 ms, (g) t = 100 ms, (h) t = 400 ms.

Schematic illustrations of structures and working principle ofMg-air battery. (a-1) Overall structures of Mg-air battery andchemical reactions, (a-2) Surface morphology of Mg anode,(b) Carbon cathode when flooding is produced, (c) When
drying condition, (d) Adequate condition. Carbon cathodes
should have hydrophilic and hydrophobic characteristics.

Major Papers
Y. Takahashi, M. Arai and M. Maeda, “Ternary Ti-Si-C Alloy Film Formation on GaN and Contact Properties”,
Ceram. Int., 45, 7, PartB (2019), 9359-9362.
Z. Heng, S. Uchida, K. Itakura and Y. Takahashi, “Performance Boost for Mg-Air Batteries Based on Felt
Separators and Composite Cathodes”, Proc. 25th Symp. on Microjoining and Assembly Technology inElectronics (MATE 2019), Yokohama, Japan, 25 (2019.1.29-30), 379-382.
Y. Takahashi, K. Takashima, K. Misawa and Y. Takaoka, “In-Situ Observation of Adhesion Behavior during
Ultrasonic Al Ribbon Bonding”, MDPI Appl. Sci., 9, 1835 (2019), 1-14.

20

CONTRIBUTIONS TO OTHER ORGANIZATIONS(January 2019 ~ December 2019)[Physics, Processes, Instruments & Measurements]

M. SHIGETA and M. TANAKA
Visualization
ofElectromagnetic-Thermal-Fluid
Phenomena in Arc Welding
Jpn. J. Appl. Phys., 59 (2019), SA0805-(12 pages).

U. K. MOHANTRY, A. SHRMA, M. NAKATAN, A. KITAGAWA,
M. TANAKA and T. SUGA
A Comparative Study between Linear and Nonlinear
Regression Analysis for Prediction of Weld
Penetration Profile in AC Waveform Submerged Arc
Welding of Heat Resistant Steel
Indian Weld. J., 1 (2019), 40-48.

M. SHIGETA, M. TANAKA and E. GHEDINI
Numerical Analysis of Correlation between Arc
Plasma Fluctuation and Nanoparticle GrowthTransport under Atmospheric Pressure
Nanomaterials, 9, 12 (2019), 1736(13 pages).

M. TANAKA
Visualizations and Numerical Simulations in Welding
Processes
Bulletin Iron Steel Inst. Jpn., 24, 4 (2019), 222-228(in Japanese).

M. SHIGETA, M. TANAKA and E. GHEDINI
Numerical Investigation of Correlation between Arc
Plasma Fluctuation and Nanopowder Distribution
Proc. Second Pacific Rim Thermal Engineering
Conf., 9, 12 (2019), 24037-(5 pages).

M. TANAKA
Introduction to Welding Technology
Textbook for HPI Technology Seminar, (2019), 117145 (in Japanese).
M. TANAKA
Introduction to Welding Process
Textbook for Summer School ofEngineering, (2019), 1-28 (in Japanese).

B. XU, S. CHEN, F. JIANG, H. L. PHAN, S. TASHIRO and
M. TANAKA
The Influence Mechanism of Variable Polarity Plasma
Arc Pressure on Flat Keyhole Welding Stability
J. Manufacturing Processes, 37 (2019), 519-528.

Welding

B. XU, S. TASHIRO, F. JIANG, S. CHEN and M. TANAKA
Effect of Arc Pressure on the Digging Process in
Variable Polarity Plasma Arc Welding of A5052P
Aluminum Alloy
Materials, 12 (2019), 1071 (17pages).

M. TANAKA
Welding Dictionary (Book)
Published by The Japan Welding Engineering
Society, (2019).

L. H. PHAN, S. TASHIRO, H. V. BUI, T. SUGA, T. SATO and
M. TANAKA
Investigation on Cathode Spot Behavior in Argon AC
TIG Welding of Aluminum through Experimental
Observation
J. Phys. D-Appl. Phys., 52, 26 (2019), 26LT02(8pages).

M. TANAKA
Introduction to Welding and Joining Technologies(Book)
Published by Sanpo Publications, (2019) (inJapanese).
K. TANAKA, T. YAMADA, M. SHIGETA, M. TANAKA and
S. NAKABAYASHIThe Relation Between Electrode Lifetime and Additive
Consumption During TIG Welding
WL, 37, 4 (2019), 4WL-6WL.

S. MAENAKA, S. TASHIRO, A. B. MURPHY, K. FUJITA and
M. TANAKA
Modeling of Xenon Short Arc Lamp Considering
Behavior of Tungsten Vapour Evaporated from
Electrodes
J. Phys. D-Appl. Phys., 52 (2019), 334001 (15pages).

K. TANAKA, M. SHIGETA, M. TANAKA and A. B. MURPHY
Investigation of the Bilayer Region of Metal Vapor ina Helium Tungsten Inert Gas Arc Plasma on StainlessSteel by Imaging Spectroscopy
J. Phys. D-Appl. Phys., 52, 35 (2019), 354003(9 pages).

A. V. NGUYEN, D. WU, S. TASHIRO and M. TANAKA
Undercut Formation Mechanism in Keyhole Plasma
Arc Welding
Weld. J., 98 (2019), 204-s-212-s.

21

D. WU, S. TASHIRO, X. HUA and M. TANAKA
Analysis of the Energy Propagation in the Keyhole
Plasma Arc Welding Using a Novel Fully Coupled
Plasma Arc-Keyhole-Weld Pool Model
Int. J. Heat Mass Transf., 141 (2019), 604-614.

T. MORICHI, K. HAMA, S. ITODA, S. TASHIRO, M. TANAKA andA. B. MURPHY
Simulation Technology to Quantify Arc Interruption
Phenomena
OMRON TECHNICS, 52, 2 (2019), 1-6(in Japanese).

L. XIAO, D. FAN, J. HUANG, S. TASHIRO and M. TANAKAA Simplified Numerical Model of Metal Transfer
Phenomena for Highcurrent GMAW Process
The 72nd IIW Annual Assembly & Int. Conf., (2019),
IIW Doc. 212-1606-19.

A. AOKI, S. TASHIRO, H. KUROKAWA and M. TANAKA
Development of Novel MIG Welding Process with
Duplex Current Feeding
J. Manufacturing Processes, 47 (2019), 74-82.

S. TASHIRO, N. MUKAI, Y. INOUE, A. B. MURPHY, T. SUGA and
M. TANAKA
Numerical Simulation of Gas Flow in a Novel Torchfor Reducing Diffusible Hydrogen
The 72nd IIW Annual Assembly & Int. Conf., (2019),
IIW Doc. 212-1617-19.

H. L. PHAN, S. TASHIRO, V. H. BUI and M. TANAKA
Influence of the Magnesium Content on Cathode
Spot Behavior in AC TIG Welding of Aluminum Alloy
Q. J. Jpn. Weld. Soc., 37, 4 (2019), 181-186 (inJapanese).
A. AOKI, S. TASHIRO, H. KUROKAWA and M. TANAKA
Influence of Current Feeding Position of Duplex
Current Feeding MIG Welding on Droplet Heat
Quantity
Materials, 12 (2019), 3590 (16pages).

D. WU, S. TASHIRO, Z. WU, K. NOMURA, X. HUA and
M. TANAKA
Analysis of the Coupled Interaction of Arc, Droplet,
Keyhole and Weld Pool in the Hybrid KPAW-PGMAW Process
The 72nd IIW Annual Assembly & Int. Conf., (2019),
IIW Doc. 212-1619-19.

S. M. HONG, S. TASHIRO, M. SARIZAM, M. TANAKA and
Y. KOIZUMIDevelopment of Advanced Control Technology of
Plasma-MIG Process and Application to Dissimilar
Joining
ICMaSS 2019, (2019), S2-I-3 (4pages).

B. XU, S. CHEN, F. JIANG, S. TASHIRO, V. A. NGUYEN and
M. TANAKA
In-situ Observation of Keyhole Detouring Flow in
VPPA Flat Welding of Aluminum Alloy by X-ray
Transmission System and Tracer Particles
The 72nd IIW Annual Assembly & Int. Conf., (2019),
IIW Doc. 212-1637-19.

L. PHAN, S. TASHIRO, H. BUI, T. SUGA, T. SATO and
M. TANAKA
Influence of Shielding Gas on Cathode Spot
Behaviours in Alternating Current Tungsten Inert Gas
Welding of Aluminium
Sci. Technol. Weld. Joining, 25 (2019), online.

S. TASHIRO, N. MUKAI, Y. INOUE, A. B. MURPHY, T. SUGA and
M. TANAKA
Numerical Simulation of Gas Flow in a Novel Torchfor Reducing Diffusible Hydrogen
J. Smart Process., 8, 5 (2019), 219-224(in Japanese).

B. XU, S. CHEN, S. TASHIRO, F. JIANG, V. A. NGUYEN and
M. TANAKA
Material Flow Analyses of High-Efficiency Joint
Process in VPPA Keyhole Flat Welding by X-ray
Transmission System
J. Clean Prod., (2019), in Press.

Q. N. TRINH, H. L. PHAN, S. TASHIRO, V. H. BUI and
M. TANAKA
Optical Measurement of Surface Temperature
Distribution of Weld Pool in AC Tungsten Inert Gas
Welding of Aluminum A1050
J. Smart Process., 8, 5 (2019), 213-218.

L. XIAO, D. FAN, J. HUANGA, S. TASHIRO and M. TANAKA
Numerical Study on Arc-Droplet Coupled Behavior in
Magnetic Field Controlled GMAW Process
J. Phys. D-Appl. Phys., (2019), in press.

B. XU, S. TASHIRO, F. JIANG, M. TANAKA and S. CHEN
The Effect of Electrode Energy Balance on Variable
Polarity Plasma Arc PressureInt. J. Heat Mass Transf., 145 (2019),
118715-118728.

22

T. YUJI, N. KAMATA, H. KINOSHITA, K. YASUI, T. BOUNO,
K. KAMEI, S. MAMAT, S. TASHIRO and M. TANAKA
Reduction of Blowholes in DC Modulated TIG
Welding for Copper
Int. J. Adv. Sci. Technol., 28, 18 (2019), 88-93.

K. TAKENAKA and Y. SETSUHARA
Droplet-Vaporization Behavior during PlasmaAssisted Mist Chemical Vapor Deposition of Zinc
Oxide Films
Plasma Sources Sci. Technol., 28 (2019), 065015/1065015/8.

N. MUKAI, Y. INOUE, S. TASHIRO, T. SUGA and M. TANAKAThe Effect of Cold Cracking Prevention of FCAW by
the Welding Process for Reducing Diffusible
HydrogenJ. Smart Process., 9, 1 (2019), 35-39 (in Japanese).

K. TAKENAKA, Y. SETSUHARA, J. G. HAN, G. UCHIDA and
A. EBEHigh Rate Formation of Silicon Nitride Thin Films
Using
Plasma-Assisted
Reactive
Sputtering
Deposition
Thin Solid Films, 685 (2019), 306-311.

D. WU, S. TASHIRO, Z. WU, K. NOMURA, X. HUA and
M. TANAKA
Analysis of Heat Transfer and Material Flow in Hybrid
KPAW-GMAW Process Based on the Novel Three
Dimensional CFD Simulation
Int. J. Heat Mass Transf., 147 (2019), 118921(14pages).

S. ZHOU, C.-H. YANG, S.-K. LIN, A. N. ALHAZAA,
O. MOKHTARI, X. LIU and H. NISHIKAWA
Effects of Ti Addition on the Microstructure,
Mechanical Properties and Electrical Resistivity ofEutectic Sn58Bi Alloy
Mater. Sci. Eng. A., 744 (2019), 560-569.

Y. SETSUHARA, M. TANAKA, H. NISHIKAWA, M. TSUKAMOTO,
T. KOZAWA, M. NAITO, H. ABE et al
Novel Structured Metallic and Inorganic Materials(Book)
Published by Springer, (2019).

C.-H. YANG, S. ZHOU, S.-K. LIN and H. NISHIKAWA
A
Computational
Thermodynamics-Assisted
Development of Sn-Bi-In-Ga Quaternary Alloys as
Low-Temperature Pb-Free Solders
Materials, 12, 4 (2019), 631.

K. TAKENAKA, M. ENDO, G. UCHIDA, Y. SETSUHARA and
A. EBE
Influence of Sputtered Atom Flux on the Electrical
Properties of A-IGZO Films Deposited by PlasmaEnhanced Reactive Sputtering
J. Alloy. Compd, 772 (2019), 642-649.

Y.-A. SHEN, C.-M. LIN, J. LI, S. HE and H. NISHIKAWA
Effectof
FeCoNiCrCu0.5
High-entropy-alloy
Substrate on Sn Grain Size in Sn-3.0Ag-0.5Cu Solder
Sci. Rep., 9 (2019), 3658.
Y.-A. SHEN, S. ZHOU, J. LI, K. N. TU and H. NISHIKAWA
Thermomigration Induced Microstructure andProperty Changes in Sn-58Bi Solders
Mater. Des., 166 (2019), 107619.

K. TAKENAKA, M. ENDO, G. UCHIDA and Y. SETSUHARA
Effects of Post-Deposition Plasma Treatments on
Stability of Amorphous InGaZnOx Thin-Film
Transistors Prepared with Plasma-Assisted Reactive
Magnetron Sputtering
Jpn. J. Appl. Phys., 58, 2s (2019), SAAC03/1-SAAC03/5.

R. GAO, S. HE, Y.-A. SHEN and H. NISHIKAWA
Effect of Substrates on Fracture Mechanism andProcess Optimization of Oxidation-Reduction
Bonding with Copper Microparticles
J. Electronic Mater., 48, 4 (2019), 2263-2271.

G. UCHIDA, Y. MINO, T. SUZUKI, J. IKEDA, T. SUZUKI,
K. TAKENAKA and Y. SETSUHARA
Decomposition and Oxidation of Methionine andTryptophan
Following
Irradiation
withaNonequilibrium Plasma Jet and Applications for
Killing Cancer Cells
Sci. Rep., 9 (2019), 6625/1-6625/17.

S. ZHOU, Y.-A. SHEN, T. URESTI, V. C. SHUNMUGASAMY,
B. MANSOOR and H. NISHIKAWA
Improved Mechanical Properties Induced by In and In& Zn Double Additions to Eutectic Sn58Bi Alloy
J. Mater. Sci. -Mater. Electron., 30, 8 (2019), 74237434.

K. TAKENAKA, M. ENDO, H. HIRAYAMA, G. UCHIDA, A. EBE and
Y. SETSUHARA
Low-temperature Formation of High-Mobility AInGaZnOx Films Using Plasma-Enhanced Reactive
Processes
Jpn. J. Appl. Phys., 58 (2019), 090605/1-090605/5.

R. GAO, J. LI, Y.-A. SHEN and H. NISHIKAWA
A Cu-Cu Bonding Method Using Preoxidized Cu
Microparticles under Formic Acid Atmosphere
Proc. 2019 Int. Conf. of Electronics Packaging(ICEP), (2019), 159-162.

23

S. ZHOU, C.-H. YANG, Y.-A. SHEN, S.-K. LIN and
H. NISHIKAWA
The Study of Sn-45Bi-2.6Zn Alloy before and after
Thermal Aging
Proc. 2019 Int. Conf. of Electronics Packaging(ICEP), (2019), 333-336.

Y. M. LEONG, A. HASEEB, H. NISHIKAWA and O. MOKHTARI
Microstructure and Mechanical Properties of Sn1.0Ag-0.5Cu Solder with Minor Zn Additions
J. Mater. Sci. -Mater. Electron., 30, 13 (2019),
11914-11922.
H. NISHIKAWA and X. LIU
Bonding Strength of Cu/Cu Joints Using Sintering
Process of Micro-Sized Cu Particles for HighTemperature Application
Proc. IMAPS High Temperature Electronics
Network (HiTEN 2019), (2019), 85-90.

C.-H. YANG, S. ZHOU, S.-K. LIN and H. NISHIKAWA
Development of Sn-Bi-In-Ga Quaternary LowTemperature Solders
Proc. 2019 Int. Conf. of Electronics Packaging(ICEP), (2019), 367-369.
J. HOU, C. LI, S. HUANG and H. NISHIKAWA
Bonding Strength of Cu-to-Cu Joints Using Cu Cold
Spray Deposition by an Oxidation and Reduction
Process for Power Device Package
Proc. 2019 Int. Conf. of Electronics Packaging(ICEP), (2019), 432-436.

F. KAWASHIRO, K. TAKAO, T. KOBAYASHI, M. YOSHIKAWA,
E. MIYAKE, T. ENDO, T. TONEDACHI and H. NISHIKAWA
Effect of Copper Over-Pad Metallization on Reliabilityof Aluminum Wire Bonds
Microelectronics Reliability, 99 (2019), 168-176.
J. BANG, D.-Y. YU, Y.-H. KO, J.-H. SON, H. NISHIKAWA and
C.-W. LEE
Intermetallic Compound Growth between Sn-Cu-Cr
Lead-Free Solder and Cu Substrate
Microelectronics Reliability, 99 (2019), 62-73.

S. JIN, O. MOKHTARI, S. KANAYAMA and H. NISHIKAWA
Effects of In Content on the Microstructure andMechanical Properties of In-Bi Alloys During
Isothermal Aging
Metals, 9, 5 (2019), 548.

A. SAITO and H. NISHIKAWA
Tin Whisker Growth Mechanism on Tin Plating of
MLCCs Mounted with Sn-3.5Ag-8In-0.5Bi Solder in
30℃60%RH
Proc. 22nd Microelectronics and Packaging Conf.
(EMPC), (2019), R&Q-02-1-R&Q-02-4.

S. ZHOU, Y.-A. SHEN, H. NISHIKAWA, T. URESTI,
V. C. SHUNMUGASAMY and B. MANSOOR
Effects of In and Zn Double Addition on Eutectic Sn58Bi Alloy
Proc. 2019 IEEE 69th Electronic Components andTechnology Conf. (ECTC), (2019), 1081-1086.

H. NISHIKAWA, M.-H. ROH, A. FUJITA and N. KAMADA
Effect of Bonding Temperature on Shear Strength of
Joints Using Micro-Sized Ag Particles for High
Temperature Packaging Technology
Proc. 22nd Microelectronics and Packaging Conf.
(EMPC), (2019), MT-12-1-MT-12-4.

Y.-A. SHEN, S. ZHOU, J. LI, K. N. TU and H. NISHIKAWA
Microstructure and Property Changes in Cu/Sn58Bi/Cu Solder Joints during Thermomigration
Proc. 2019 IEEE 69th Electronic Components andTechnology Conf. (ECTC), (2019), 2003-2008.
S. ZHOU, C.-H. YANG, Y.-A. SHEN, S.-K. LIN and
H. NISHIKAWA
The Newly Developed Sn-Bi-Zn Alloy with a Low
Melting Point, Improved Ductility, and High Ultimate
Tensile Strength
Mater., 6 (2019), 100300.

Y. FUNADA, Y. YAMASHITA, Y. SAKON and M. TSUKAMOTO
Development and Bead Formation Properties ofMultiple Laser Coating Technology with Centered
Powder Feeding
J. Smart Process., 8, 1 (2019), 19-24 (in Japanese).
R. HIGASHINO, M. TSUKAMOTO, Y. SATO, S. MASUNO,
T. SHOBU and N. ABE
Experimental Analysis on Pure Copper Weld withHigh Intensity Blue Diode Laser by in Situ High Speed
X-Ray Imaging
Proc. SPIE. 10911, High-Power Laser Materials
Processing: Applications, Diagnostics, and Systems
VIII, (2019).

Y.-A. SHEN, S. ZHOU, S. HUANG and H. NISHIKAWA
Preferred Orientation of Bi and Effect of Sn-Bi
Microstructureon
MechanicalandThermomechanical Properties in Eutectic Sn-Bi Alloy
Mater., 6 (2019), 100309.

24

T. HARA, M. TSUKAMOTO, Y. SATO, R. HIGASINO, Y. FUNADA
and N. ABE
Pure Copper Layer Formation on Copper Alloy
Substrate by 100 W Class Blue Diode Laser Induced
Laser Cladding
Proc SPIE Vol. 10909, Laser 3D Manufacturing VI,
109090Y, (2019).

Y. SATO, M. TSUKAMOTO, T. SHOBU, Y. FUNADA,
Y. YAMASHITA, T. HARA, M. SENGOKU, Y. SAKON, T. OHKUBO,
M. YOSHIDA and N. ABE
In Situ X-ray Observations of Pure-Copper Layer
Formation with Blue Direct Diode Lasers
Appl. Surf. Sci., 480 (2019), 861-867.
A. SHARMA, J. S. PANCHAGNULA, M. KUMAR, K. ITO,
P. K. PARCHURI, S. SIMHAMBHATLA and S. REDDY
Wire Arc Additive Manufacturing, Thermal Modelling,
Build Direction, Mechanical Properties
J. Manufacturing Processes, 40 (2019), 46-58.

T. SHIBATA, M. TSUKAMOTO and Y. SATO
Effect of Input Energy on Densification for Pure
Copper Fabricated by SLM with Blue Diode Laser
Proc. SPIE 10909, Laser 3D Manufacturing VI,
109090Z, (2019).

H. ZARGARI, K. ITO, P. K. PARCHURI, H. YAMAMOTO,
K. MANISH and A. SHARMA
Effect of Workpiece- Vibration on the Penetration
Shape Change of Weld Bead in P-GMA Welds
The 72nd IIW Annual Assembly & Int. Conf., (2019),
IIW Doc. IX-2672-19(IX-L-1211-19).

M. SUWA, N. WAKABAYASHI, T. HIROKI, K. TOJO, S. MASUNO,
R. HIGASHINO and M. TSUKAMOTO
Development of BLUE IMPACT, a 450nm-wavelength
Light Source for Laser Processing
Proc. SPIE. 10900, High-Power Diode Laser
Technology XVII, (2019).

M. HIROSE, T. NABATAME, K. YUGE, E. MAEDA, A. OHI,
N. IKEDA, Y. IROKAWA, H. IWAI, H. YASUFUKU, S. KAWADA,
M. TAKAHASHI, K. ITO, Y. KOIDE and H. KIYONE
Influence of Post-Deposition Annealing on
Characteristics of Pt/Al2O3/β-Ga2O3 MOS Capacitors
Microelectron. Eng., 216 (2019), 111040.

K. TAKENAKA, M. TSUKAMOTO, M. HASHIDA, S. MASUNO,
H. SAKAGAMI, M. KUSABA, S. SAKABE, S. INOUE, Y. FURUKAWA
and S. ASAI
Ablation Suppression of a Titanium Surface
Interacting with a Two-Color Double-Pulse
Femtosecond Laser BeamAppl. Surf. Sci., 478 (2019), 882-886.

H. SERIZAWA, N. NAKAZATO, Y. SATO, M. TSUKAMOTO,
J. S. PARK and H. KISHIMOTO
Experimental Studies on Joinability of Zircaloy and
SiC/SiC Composite with Titanium Powder
IJCES, 1 (2019), 56-62.

K. KODA, K. TAKENAKA and M. TSUKAMOTO
Laser-fluence Dependence of Microstructure Formedon Nickel by Backward Pulse Laser Deposition
Appl. Surf. Sci., 485 (2019), 128-132.

H. SERIZAWA, S. SATO and F. MIYASAKA
Computational Prediction of Penetration Shapes in
MIG Welding of Practical Aluminum Alloy Joints
Mathematical Modelling of Weld Phenomena, 12(2019), 17-26.

S. KATO, A. SUNAHARA and M. TSUKAMOTO
Kinetic Model for Color-Center Formation in Tio2 Film
Using Femtosecond Laser Irradiation
J. Vac. Sci. Technol. A, 37, 3 (2019), 31512.
M. TSUKAMOTO and R. HIGASHINO
Development of High Power Blue Diode Laser for
Additive Manufacturing
MICRO OPTICS NEWS, 37, 3 (2019), 17-22 (inJapanese).

H. SERIZAWA, J. SHIMAOKA, Y. SATO, T. HARA,
M. TSUKAMOTO and H. TANIGAWA
Laser Cladding of Copper Powder on Tungsten by
Using Multiple Laser Beams Focusing System
Proc. National Symp. on Welding Mechanics andDesign 2019, (2019), 57-60 (in Japanese).

Y. SATO, S. SRISAWADI, D. TANPRAYOON, M. TSUKAMOTO andE. HORI
Influence of Energy Input on Spatter Generation of
316L Stainless Steel Fabrication by SLM in Vacuum
Proc SPIE Vol. 10909, Laser 3D Manufacturing VI,
10909M, (2019).

S. SATO, H. SERIZAWA and F. MIYASAKA
Numerical Prediction of Penetration Shape inPractical Steel MAG Welded Joint with Point Heat
SourceProc. National Symp. on Welding Mechanics andDesign 2019, (2019), 420-427 (in Japanese).

25

H. SERIZAWA, H. OGURA, K. MITSUFUJI and F. MIYASAKA
Numerical Analysis of Friction Stir Welding Process
for V-Alloy/Stainless Steel Joint by Using Improved
Particle Method
Proc. National Symp. on Welding Mechanics andDesign 2019, (2019), 433-439 (in Japanese).

H. BAI, J. HU, Y. DUAN, T. KOZAWA, M. NAITO, J. ZHANG and
S. DONG
Surface Modification of Li1.3Al0.3Ti1.7(PO4)3 CeramicElectrolyte by Al2O3-doped ZnO Coating to Enable
Dendrites-Free
All-Solid-State
Lithium-Metal
Batteries
Ceram. Int., 45, 12 (2019), 14663-14668.

P.-Y. HSU, H.-C. KUO, W.-H. TUAN, S.-J. SHIH, M. NAITO and
P.-L. LAI
Manipulation of the Degradation Behavior of Calcium
Sulfate by the Addition of Bioglass
Prog. Biomater., 8, 2 (2019), 115-125.

T. OHMURA, T. TASAKA, K. ISHII, T. TSUJI, M. MINAMIDE,
R. HAYASAKA, A. KONDO and M. NAITO
Development of Simple Method to Measure Thermal
Conductivity of Thermal Insulations
J. Soc. Powder Technol. Jpn., 56, 2 (2019), 74-80 (inJapanese).

M. CHEN, G. FAN, Z. TAN, C. YUAN, D. XIONG, Q. GUO, Y. SU,
M. NAITO and Z. LI
Tailoring and Characterization of Carbon Nanotube
Dispersity in CNT/6061Al Composites
Mater. Sci. Eng. A., 757 (2019), 172-181.

M. AKOSHIMA, H. ABE, T.-W. LIAN, A. KONDO and M. NAITO
Thermal Diffusivity Measurement for Thermal
Insulator
Composite
Materials
withSilicaNanoparticles/Glass Fiber by the Laser Flash Method
J. Soc. Powder Technol. Jpn., 56, 3 (2019), 123-129(in Japanese).

M. MATSUOKA, K. YOKOYAMA, K. OKURA, N. MURAYAMA,
M. UEDA and M. NAITO
Synthesis of Geopolymers from Mechanically
Activated Coal Fly Ash and Improvement of Their
Mechanical Properties
Minerals, 9, 12 (2019), 791(10pages).

K. KANAI, Y. FUKUI, S. OZAWA, A. KONDO, T. KOZAWA and
M. NAITO
Evaluation of YAG:Ce3+ Phosphor Properties
Synthesized by Mechanical Method
J. Soc. Powder Technol. Jpn., 56, 3 (2019), 142-147(in Japanese).

M. NAITO, A. BUCHACZ, A. BAIER, P. TOPALA andD. NEDELCU
Research and Innovation in Advanced Engineering
Materials (Book)
Published by ModTech Publication House,(2019).

A. KONDO, S. ISHIHARA, K. KUSHIMOTO, T. KOZAWA, J. KANO
and M. NAITO
Correlation between Grinding Results in a Tumbling
Ball Mill with Liquid Media and the Analysis of Ball
Motion Using DEM Simulation
J. Soc. Powder Technol. Jpn., 56, 3 (2019), 148-155(in Japanese).

T. KOZAWA, A. KONDO, K. FUKUYAMA, M. NAITO, H. KOGA,
Y. SHIMO, T. SAITO, H. IBA, Y. INDA, T. OONO, T. KATOH and
K. NAKAJIMA
Bulk-type All-Solid-State Batteries with MechanicallyPrepared LiCoPO4 Composite Cathodes
J. Solid State Electrochem., 23, 4 (2019), 1297-1302.

A. KONDO, S. ISHIHARA, K. KUSHIMOTO, T. KOZAWA, J. KANO
and M. NAITO
Correlation between Grinding Results in a Tumbling
Ball Mill with Liquid Media and the Distribution of Ball
Impact Energy Calculated by DEM Simulation
J. Soc. Powder Technol. Jpn., 56 (2019), 608-614 (inJapanese).

T. KOZAWA
Lattice Deformation of LiNi0.5Mn1.5O4 Spinel Cathodefor Li-ion Batteries by Ball Milling
J. Power Sources, 419, 15 (2019), 52-57.
T. KOZAWA, K. FUKUYAMA, A. KONDO and M. NAITO
Wet Mechanical Route to Synthesize MorphologyControlled NH4MnPO4·H2O and Its Conversion
Reaction into LiMnPO4ACS Omega., 4 (2019), 5690-5695.

K. ITAKURA, T. TSUTSUI, Z. HENG, H. HIRAKI, S. UCHIDA and
Y. TAKAHASHI
Study of Improvement of Power and Stability ofMagnesium Air Battery - Influence of CathodeMaterials and Structures on Battery Properties.
J. Smart Process., 7, 2 (2019), 65-72 (in Japanese).

26

Z. HENG, S. UCHIDA, K. ITAKURA and Y. TAKAHASHI
Performance Boost for Mg-Air Batteries Based on Felt
Separators and Composite Cathodes
Proc. 25th Symp. on Microjoining and AssemblyTechnology in Electronics (MATE 2019), 25 (2019),
379-382.

[Materials, Metallurgy & Weldability]
K. MATSUMOTO, A. NISHIMOTO, T. ISHIKAWA, K. NAGATSUKA,
K. ITO, M. TSUKAMOTO and K. NAKATA
Dissimilar Materials Joining of A6061 Al Alloy and
AZ31 Mg Alloy by Laser Welding
J. Light Metal Weld., 57, 5 (2019), 26-34 (inJapanese).

Z. HENG, S. UCHIDA, K. ITAKURA and Y. TAKAHASHI
Performance Boost for Mg-Air Batteries Based on Felt
Separators and Composite Cathodes
Proc. 25th Symp. on Microjoining and AssemblyTechnology in Electronics (MATE 2019), 25 (2019),
379-382.

P. K. PARCHURI, K. ITO, H. YAMAMOTO, A. MORI, S. TANAKA
and K. HOKAMOTO
Cladding of a Crack-Free W Plate on Cu Plates Using
Explosive Welding at Higher Collision Velocity withLower Collision Angle
Results Mater., 5, 100023 (2019), 1-7.

Y. TAKAHASHI, M. ARAI and M. MAEDA
Ternary Ti-Si-C Alloy Film Formation on GaN andContact Properties
Ceram. Int., 45, 7, PartB (2019), 9359-9362.

K. ITO, K. KONDOH, J. UMEDA, H. FUJII, S. KIRIHARA et al.
Novel Structured Metallic and Inorganic Materials(Book)
Published by Springer, (2019).

Y. TAKAHASHI, K. TAKASHIMA, K. MISAWA and Y. TAKAOKA
In-Situ Observation of Adhesion Behavior during
Ultrasonic Al Ribbon Bonding
MDPI Appl. Sci., 9, 1835 (2019), 1-14.

S. NISHIKAWA and M. TAKAHASHIInterface Separation Phenomena during Immersion
in Water of Anodically Bonded Kovar AlloyBorosilicate Glass Joints with Application of Opposite
PolaritySens. Actuator A-Phys., 290 (2019), 125-129.

P. KOCHAR, A. SHARMA, T. SUGA and M. TANAKA
Prediction and Control of Asymmetric Bead Shape inLaser-Arc Hybrid Fillet-Lap Joints in Sheet Metal
Welds
Laser Manuf. Materi. Process., 6, 1 (2019), 67-84.

S. NISHIKAWA and M. TAKAHASHI
Effect of Application of Opposite Polarity Voltage on
Interface Separation of Anodically Bonded Kovar
Alloy-Borosilicate Glass Joints
Sens. Actuator A-Phys., 296 (2019), 367-374.

C. PHONGPHISUTTHINAN, P. WATTANAPORNPHAN, T. SUGA,
M. MIZUTANI and S. KATAYAMA
Laser Welding for Joining of Open-Cell Aluminum
Foam to Solid Shell
Weld. World, 63, 3 (2019), 825-839.

P. K. PARCHURI, M. TAKAHASHI, K. ITO, H. YAMAMOTO andK. HOKAMOTOTEM Characterization of Explosive Cladding
Interfaces between Refractory Metal (group V or VI)
and Cu Plates
J. Smart Process., 8, 6 (2019), 261-266 (in Japanese).
P. K. PARCHURI, S. KOTEGAWA, H. YAMAMOTO, K. ITO,
A. MORI and K. HOKAMOTO
Benefits of Intermediate-Layer Formation at theInterface of Nb/Cu and Ta/Cu Explosive Clads
Mater. Des., 166 (2019), 107610.
S.-J. LEE, S. E. SHIN, Y. SUN, H. FUJII and Y. PARK
Friction Stir Welding of Multi-Walled Carbon
Nanotubes Reinforced Al Matrix Composites
Mater. Charact., 145 (2019), 653-663.

27

S.-J. LEE, T. M. PARK, J.-H. NAM, W. S. CHOI, Y. F. SUN,
H. FUJII and J. HAN
The Unexpected Stress-Strain Response of Medium
Mn Steel after Friction Stir Welding
Mater. Sci. Eng. A., 744 (2019), 340-348.

Y. HU, H. LIU and H. FUJII
Improving the Mechanical Properties of 2219-T6
Aluminum Alloy Joints by Ultrasonic Vibrations
during Friction Stir Welding
J. Mater. Process. Technol., 271 (2019), 75-84.

S.-J. LEE, K. USHIODA and H. FUJII
Evaluation of Stacking-Fault Energy in Fe-Mn BasedTwinning-Induced Plasticity Steels after Friction Stir
Welding
Mater. Charact., 147 (2019), 379-383.

Y. AOKI, R. KUROIWA, H. FUJII, G. MURAYAMA and
M. YASUYAMA
Linear Friction Stir Welding of Medium Carbon Steelat Low Temperature
ISIJ Int., 59, 10 (2019), 1853-1859.

Y. SUN, H. FUJII, S. ZHU and S. GUAN
Flat Friction Stir Spot Welding of Three 6061-T6
Aluminum Sheets
J. Mater. Process. Technol., 264 (2019), 414-421.

T. NISHIMURA, R. MATSUBAYASHI, K. MORISHITA, M. YOSHIYA,
T. NAGIRA and H. YASUDA
Selection of the Massive-like Δ-Γ Transformation Due
to Nucleation of Metastable Δ Phase in Fe-18
Mass%Cr-Ni Alloys with Ni Contents of 8, 11, 14 and
20 Mass%
ISIJ Int., 59, 3 (2019), 459-465.

Y. HANGAI, K. TAKADA, H. FUJII, Y. AOKI and T. UTSUNOMIYA
Foaming Behavior of Blowing- and StabilizationAgent-Free Aluminum Foam Precursor during Spot
Friction Stir Welding
J. Mater. Process. Technol., 265 (2019), 185-190.

X. C. LIU, Y. F. SUN, T. NAGIRA, K. USHIODA and H. FUJII
Evaluation of Dynamic Development of Grain
Structure during Friction Stir Welding of Pure Copper
Using a Quasi in Situ Method
J. Mater. Sci. Technol., 35 (2019), 1412-1421.

Y. TOMITA and H. FUJII
Influence of Bulk Density and Number of Contacts on
Bending Strength of Additive Manufactured Sand
Molds
J. Jpn Foundry Soc., 91, 3 (2019), 148-154 (inJapanese).

X. C. LIU, Y. F. SUN, T. NAGIRA, K. USHIODA and H. FUJII
Strain Rate Dependent Micro-Texture Evolution in
Friction Stir Welding of Copper
Mater., 6 (2019), 100302-1-100302-5.

M. N. AVETTAND-FENOEL, T. NAGAOKA, H. FUJII and
R. TAILLARD
Effect of a Ni Interlayer on Microstructure andMechanical Properties of WC-12Co Cermet / SC45
Steel Friction Stir Welds
J. Manufacturing Processes, 40 (2019), 1-15.

T. NAGIRA, X. C. LIU, K. USHIODA, Y. IWAMOTO, G. ANO andH. FUJII
Role of Annealing Twinning in Microstructural
Evolution of High Purity Silver during Friction Stir
WeldingSci. Technol. Weld. Join., 24 (2019), 644-651.

Y. F. SUN, H. FUJII, Y. SATO and Y. MORISADA
Friction Stir Spot Welding of SPCC Low Carbon Steel
Plates at Extremely Low Welding Temperature
J. Manufacturing Processes, 35 (2019), 733-741.

Y. GAO, Y. MORISADA, H. FUJII and J. LIAO
Microstructure and Mechanical Properties of Friction
Lap-Butt Welded Ultra-Thin Galvanized Steel Sheets
J. Manufacturing Processes, 45 (2019), 22-32.

N. XU, Q. SONG, Y. BAO and H. FUJII
Investigation on Microstructure and Mechanical
Properties of Cold Source Assistant Friction Stir
Processed AZ31B Magnesium Alloy
Mater. Sci. Eng. A., 761 (2019).

B. VICHARAPU, H. LIU, H. FUJII, N. MA and A. DE
Probing Tool Durability in Stationary Shoulder
Friction Stir Welding
Proc. Friction Stir Welding and Processing X 2019
TMS Annual Meeting & Exhibition, Friction Stir
Welding and Processing X (2019), 91-98.

H. FUJII
Friction Welding Technology -Friction Stir Welding
and Linear Friction Welding
Bridge and Foundation Eng., 53, 8 (2019), 105-108(in Japanese).

H. LIU, K. USHIODA and H. FUJII
Elucidation of Interface Joining Mechanism during
Friction Stir Welding through Cu/Cu-10Zn Interfacial
Observations
Acta Mater., 166 (2019), 324-334.

28

R. KUROIWA, H. LIU, Y. AOKI, S. YOON, H. FUJII,
G. MURAYAMA and M. YASUYAMA
Microstructure Control of Medium Carbon Steel
Joints by Low-Temperature Linear Friction Welding
Sci. Technol. Weld. Joining, (Accepted) (2019).

Z. XIONG, Y. YANG, K. KONDOH and R. MISRAA Novel W-Skeleton-Reinforced Al Matrix Composite
by Consolidating a Newly Developed Core–ShellStructured W-Coated Al Powder
Metall. Mater. Trans. A, 50, 7 (2019), 3301-3309.

M. NAKAI, M. NIINOMI, H. LIU and T. KITASHIMASuppression of Grain Boundary a Formation by
Addition of Silicon in a Near-b Titanium Alloy
Mater. Trans., ME201920 (2019), 1-6.

I. AMMARUEDA, K. KATSUYOSHI, V. PATAMA, S. TINGTING,
Q. MA and U. JUNKO
Characteristics of Titanium Powder with Nitrogen andMechanical Properties of Its Additive Manufactured
Materials
J. Smart Process., 83 (2019), 95-101 (in Japanese).

J. W. CHOI, H. LIU, K. USHIODA and H. FUJII
Dissimilar Friction Stir Welding of Immiscible
Titanium and Magnesium
Mater., 7 (2019), 100389.

M. YOSHIYIA, T. KOBAYASHI, A.K. SAHA and K. KONDOH
Heterogeneous Two-Phase Boundary of Titanium by
Atomistic Simulation
AMTC Lett., 6 (2019), 228-229.

J. W. CHOI, H. LIU, K. USHIODA and H. FUJII
Effect of an Al Filler Material on Interfacial
Microstructure and Mechanical Properties of
Dissimilar Friction Stir Welded Ti/Mg Joint
Mater. Charact., 155 (2019), 109801.

B. CHEN, K. KONDOH, J. UMEDA, S. LI, L. JIA and J. LI
Interfacial In-Situ Al2O3 Nanoparticles Enhance Load
Transfer in Carbon Nanotube (CNT)-reinforced
Aluminum Matrix Composites
J. Alloy. Compd, 789 (2019), 25-29.

W. ZHANG, H. LIU, H. DING and H. FUJII
Grain Refinement and Superplastic Flow in Friction
Stir Processed Ti-15V-3Cr-3Sn-3Al Alloy
J. Alloy. Compd, 803 (2019), 901-911.

B. CHEN, K. KONDOH, J. S. LI and M. QIANExtraordinary Reinforcing Effect of Carbon
Nanotubes in Aluminium Matrix Composites Assisted
by In-Situ Alumina Nanoparticles
Compos. Pt. B-Eng., 183 (2019), 107691.

B. VICHARAPU, H. LIU, H. FUJII, K. NARASAKI, N. MA andA. DE
Probing Residual Stresses in Stationary Shoulder
Friction Stir Welding Process
Int. J. Adv. Manuf. Technol., (2019), 91-98.

X. ZHANG, S. LI, B. PAN, D. PAN, L. LIU, X. HOU, M. CHU,
K. KONDOH and M. ZHAO
Regulation of Interface between Carbon NanotubesAluminum and Its Strengthening Effect in CNTs
Reinforced Aluminum Matrix Nanocomposites
Carbon, 155 (2019), 686-696.

K. KONDOH, R. IKEMASU, J. UMEDA, S. KARIYA and
A. KHANTACHAWANA
Microstructural and Mechanical Properties of ΑTitanium
SinteredMaterial
via
ThermalDecomposition of Additive Chromium Oxide Particles
Mater. Sci. Eng. A., 739, 2 (2019), 491-498.

G. ONGTRAKULKIJ, A. KHANTACHAWANA and K. KONDOH
Effects of Media Parameters on Enhance Ability ofHardness and Residual Stress of Ti6Al4V by Fine Shot
Peening
Surf. Interfaces, 18 (2019), 100424.

S. F. LI, Y. F. YANG, K. KONDOH, S. KARIYA, Q. S. ZHU and
Y. SHI
Activation of B as a Sintering Aid and Its Improved
Microstructure Modification by Using Ni-B Coated Ti
Core-Shell Powder
Mater., 5 (2019), 100182.

T. EDA, A. KHANTACHAWANA, J. UMEDA and K. KONDOH
Phase Transformation Control of Powder Metallurgy
Super-elastic Ti-Ni Alloy by Adding Co Element
J. Jpn. Soc. Powder Powder Metal., 66, 1 (2019), 916 (in Japanese).

L. JIA, X. LI, K. KONDOH, B. CHEN, S. LI, J. UMEDA and Z. LU
Hybrid Effect of TiCp and TiBw Co-Strengthening Ti
Matrix Composites Prepared by Spark Plasma
Sintering and Hot Extrusion
Mater. Charact., 151 (2019), 6-14.

S. KARIYA, M. FUKUO, J. UMEDA and K. KONDOH
Quantitative Analysis on Light Elements Solution
Strengthening in Pure Titanium Sintered Materials byLabusch Model Using Experimental Data
Mater. Trans., 60, 2 (2019), 263-268.

29

A. BAHADOR, S. KARIYA, J. UMEDA, E. HAMZAH and
K. KONDOH
Tailoring Microstructure and Properties of aSuperelastic Ti-Ta Alloy by Incorporating Spark
Plasma Sintering with Thermomechanical Processing
Journal of Materials Engineering and Performance
J. Mater. Eng. Perform., 28, 5 (2019), 3012-3020.

H. IWAMOTO and F. MINAMI
Japanese Welding Guideline for Duplex Stainless
Steel
ASME 2019 Pressure Vessels & Piping Conf.,
PVP2019-93022 (2019).
S. UEDA, K. KADOI, S. TOKITA and H. INOUE
Relationship between Alloy Element and Weld
Solidification Cracking Susceptibility of Austenitic
Stainless SteelISIJ Int., 59, 7 (2019), 1323-1329.

T. EDA, A. KHANTACHAWANA, J. UMEDA and K. KONDOH
Phase Transformation Control of Powder Metallurgy
Super-Elastic Ti-Ni Alloy by Adding Co Element
Mater. Trans., 60, 8 (2019), 1583-1590.

K. KADOI, M. HIRAOKA, K. SHINOZAKI and T. OBANA
Ductility-dip Cracking Susceptibility in Dissimilar
Weld Metals of Alloy 690 Filler Metal and Low Alloy
Steel
Mater. Sci. Eng. A., 756 (2019), 92-97.

M. FUKUO, S. KARIYA, J. UMEDA, K. KONDOH and
M. YOSHIYA
Strengthening Mechanisms of Powder Metallurgy
Extruded CP Titanium Materials with Zirconium andOxygen Solid Solution via Decomposition of ZrO 2
Additives in Sintering
Mater. Trans., 60, 9 (2019), 1881-1889.

K. KADOI
Investigation of Standardizing for Evaluation Methodof Varestraint Test
The 72nd IIW Annual Assembly & Int. Conf., IX2682-19 (2019), 1-8.

J. UMEDA, K. KONDOH, H. SANNOMIYA, T. LUANGVARANUNT,
M. TAKAHASHI and H. NISHIKAWA
Interfacial Reaction Behavior and Mechanical
Properties of Pure Aluminum and Magnesium Alloy
Dissimilar Materials Fabricated by Hot Press and Heat
Treatment
Mater. Charact., 157 (2019), 109879.

K. KADOI, C. CHENG, S. TOKITA, K. USHIODA, H. FUJII and
H. INOUE
Effect of Cr and C on Microstructure Evolution ofMedium Carbon Steels during Friction Stir Welding
Process and Their Mechanical Property
7th Int. Conf. on Recrystallization and Grain Growth,(2019).

A. BAHADOR, J. UMEDA, S. TSUTSUMI, E. HAMZAH, F. YUSOF,
H. FUJII and K. KONDOH
Asymmetric Local Strain, Microstructure andSuperelasticity of Friction Stir Welded Nitinol Alloy
Mater. Sci. Eng. A., 767 (2019), 138344.

C. CHENG, K. KADOI, S. TOKITA, H. FUJII, K. USHIODA and
H. INOUE
Effects of Carbon and Chromium on Microstructure
Evolution and Mechanical Properties of Friction Stir
Weldment in Medium-carbon SteelMater. Sci. Eng. A., 762 (2019), 138060.

A. BAHADOR, J. UMEDA, E. HAMZAH, F. YUSOF, X. LI and
K. KONDOH
Synergistic Strengthening Mechanisms of Copper
Matrix Composites with TiO2 Nanoparticles
Mater. Sci. Eng. A., (2019), 138797.

K. KADOI, S. OKANO, S. YAMASHITA, D. ABE, A. TAKEMORI,
S. YAMADA, A. TAKADA and J. KAWATA
Investigation of Standardizing for Evaluation Methodof Transverse Varestraint Test
Q. J. Jpn. Weld. Soc., 37, 4 (2019), 200-207 (inJapanese).

K. SHITARA, T. OGAWA, A. KUWABARA, F. TAKEIRI,
H. KAGEYAMA and H. MORIWAKE
Complex Defects and Ferroelectric Behavior in
BaTiO3-xN2x/3: A First-Principles Study
AMTC Letters, 6 (2019), 236-237.

S. TOKITA, K. KADOI, Y. KANNO and H. INOUE
Solidification Cracking Susceptibility of Grain
Boundary Engineered Fully Austenitic Stainless SteelThe 72nd IIW Annual Assembly & Int. Conf., IX2683-19 (2019), 1-9.

H. UBUKATA, T. BROUX, F. TAKEIRI, K. SHITARA, H. YAMASHITA,
A. KUWABARA, G. KOBAYASHI and H. KAGEYAMA
Hydride Conductivity in an Anion-Ordered Fluorite
Structure LnHO with an Enlarged Bottleneck
Chem. Mat., 31 (2019), 7360-7366.

30

S. TOKITA, H. KOKAWA and Y. SATO
Effect of Thermomechanical Parameters on Grain
Growth and Recrystallization during Grain BoundaryEngineering of Austenitic Stainless Steel7th Int. Conf. on Recrystallization and Grain Growth,(2019).

H. ABE, K. KURUMA, T. MURAKAMI, M. TAKAHASHI, K. SATO,
T. NAKA and Y. SUZUKI
Magnetite Nanocrystal Clusters Transformed from
FerricPrecursor
and
Their
Colloidal
Magnetorheology
IOP Conf. Ser. : Mater. Sci. Eng., 479, 1 (2019).

S. KISANUKI and S. KIRIHARA
Design and Fabrication of Sound Absorption
Structures for Thermal Spraying by Using
Stereolithographic Additive Manufacturing
J. Smart Process., 7, 6 (2019), 238-242 (in Japanese).

Z. D. DAI, X. X. SONG, X. L. KANG, J. K. CAO, H. ABE,
S. OHARA and Z. Q. TAN
Controlled Synthesis of TiO2 Nanosheets with
Exposed (001) Facets for Enhanced Photocatalytic
Activity
IOP Conf. Ser. : Mater. Sci. Eng., 479, 1 (2019).

H. NOZAKI and S. KIRIHARA
Stereolithographic Additive Manufacturing ofFluctuated Patterns for Streamline Modulations in
Water Flows
J. Smart Process., 7, 6 (2019), 233-237 (in Japanese).

H. ABE, T. NAKA, K. SATO, Y. SUZUKI and M. NAKANO
Shape-Controlled
SynthesesofMagnetite
Microparticles and Their Magnetorheology
Int. J. Mol. Sci., 20, 15 (2019), 3617-1-3617-11.

S. KIRIHARA
Materials
Tectonics
Technology
andStereolithographic Additive Manufacturing
J. Smart Process., 7, 6 (2019), 223-228 (in Japanese).

H. ABE, A. KONDO and K. SATO
Free-polymer-induced Gelation of Non-aqueous
Colloids for Direct
Ceram. Mod. Thecnol., 1, 2 (2019), 99-103.

K. NONAKA and S. KIRIHARA
Three Dimensional Smart Processing by Ultra Violet
Laser Lithography of Ceramic Additive Manufacturing
Mater. Sci. Forum, 941 (2019), 2196-2199.

B. TSEDENBAL, N. KANNARI, K. SATO, H. ABE, H. SHIRAI and
T. TAKARADA
Reforming of Coal Volatiles over Ilmenite Ore
Fuel Process. Technol., 192 (2019), 96-104.

S. KIRIHARA
Ceramic Thermal Spraying
Weld. Technol., 31, 1 (2019), IV (in Japanese).

K. FUKUI, Y. NAKAMURA, H. ABE and Y. SUZUKI
Hydrothermal
Synthesis
andElectrochemical
Capacitor Application of Urchin-Like NiCo2O4
Particles: Effect of Urea Concentrations
J. Ceram. Soc. Jpn., 127, 11 (2019), 843-848.

S. KIRIHARA
Stereolithographic Additive Manufacturing for
Materials Tectonics as Practical Technology
Proc. Japan Laser Processing Society, 91 (2019) (inJapanese).
S. KIRIHARA
Stereolithographic Additive Manufacturing
Ceramic Components with Micropatterns
Electromagnetic Wave Control
Ceram. Mod. Thecnol., 1, 2 (2019), 84-90.

G. ALKAN, L. MANCIC, S. TAMURA, K. TOMITA, Z. TAN, F. SUN,R. RUDOLF, S. OHARA, B. FRIEDRICH and O. MILOSEVIC
Plasmon Enhanced Luminescence in Hierarchically
Structured Ag@ (Y0.95Eu0.05)2O3 Nanocomposites
Synthesized by Ultrasonic Spray Pyrolysis
Adv. Powder Technol., 30, 7 (2019), 1409-1419.

offor

K. SATO, C. IWATA, N. KANNARI and H. ABE
Highly Accelerated Oxygen Reduction Reaction
Kinetics
inColloidal
Processing-Derived
Nanostructured Lanthanum Strontium Cobalt
Ferrite/gadolinium-Doped Ceria Composite Cathodefor Intermediate-Temperature Solid Oxide Fuel Cells
J. Power Sources, 414 (2019), 502-508.

31

[Mechanics, Strength & Structural Design]

Y. OKAWA, Y. KITANI, Y. MA and N. MA
Thermal-mechanical FE Analysis of Laser Assisted Lap
Joining of Plastics and High Strength SteelThe 72th IIW annual assembly & international
conference, IIW-C-X-1945-19 & IIW-C-IV-1450-19(2019), 1.

H. YAMAMOTO, H. IZUMI and K. ITO
Effects of Microstructural Modification by Friction Stir
Processing on Fracture Toughness of Low-carbon
Steel Welds
J. Smart Process., 8, 1 (2019), 29-35 (in Japanese).

J. WANG, X.-T. LUO, C.-J. LI, N. MA and M. TAKAHASHI
EffectofSubstrate
Temperature ontheMicrostructure and Interface Bonding Formation of
Plasma Sprayed Ni20Cr Splat
Surf. Coat. Technol., 371 (2019), 36-46.

Y. MIKAMI, W. SADAKANE and M. MOCHIZUKI
Numerical Simulation of Microscopic Residual Stress
Evolution in Polycrystalline Aggregate Subjected toWeld Thermal Cycle
Weld. World, 64, 1 (2019), 105-114.

S. REN, S. LI, Y. WANG, D. DENG and N. MA
Finite Element Analysis of Residual Stress in 2.25Cr1Mo Steel Pipe during Welding and Heat Treatment
ProcessJ. Manufacturing Processes, 47, 11 (2019), 110-118.

H. HUANG, X. YIN, Z. FENG and N. MA
Finite Element Analysis and In-Situ Measurement of
Out-of-Plane Distortion in Thin Plate TIG Welding
Materials, 12, 1 (2019), 1-17.
Y. ZHU, Y. LUO and N. MA
Relationship between Equivalent Surface Heat Source
and Induction Heating Parameters for Analysis ofThermal Conduction in Thick Plate Bending
Ships Offshore Struct., 2019, 3 (2019), 1-8.

Y. MA, B. YANG, M. LOU, Y. LI and N. MA
Effect of Mechanical and Solid-State Joining
Characteristics on Tensile-Shear Performance ofFriction Self-Piercing Riveted Aluminum Alloy
AA7075-T6 Joints
J. Mater. Process. Technol., 278 (2019),
116543(10pages).

K. SAITO, T. HIRASHIMA, N. MA and H. MURAKAWA
New Approach of Characteristic Tensor to Mixed
Mode Crack Propagation
The 25th Int. Conf. on Computational &Experimental Engineering and Sciences, (2019),
32-34.

J. LIN, N. MA, X. LIU and Y. LEI
Modification of Residual Stress Distribution in
Welded Joint of Titanium Alloy with Multi Electron
Beam HeatingAA7075-T6 Joints AA7075-T6 Joints
J. Mater. Process. Technol., 278 (2019),
116504(13pages).

H. HUANG, H. MURAKAWA, N. MA and Z. FENG
A Dual-Mesh Method for Efficient Thermal Stress
Analysis of Large Scale Welded Structures
Int. J. Adv. Manuf. Technol., 2019, 103 (2019), 769780.

Y. LI, Y. WEI, X. LUO, C. LI and N. MA
Correlating Particle Impact Condition with
Microstructure and Properties of the Cold-Sprayed
Metallic Deposits
J. Mater. Sci. Technol., 40,1 (2019), 185-195.

N. MA
Prediction
Methodsfor
Welding
ResidualStress/strain and Their Application to Metal Forming
Structural Components
Bulletin of the JSTP, 2, 16 (2019), 209-212 (inJapanese).

S. REN, S. LI, Y. WANG, D. DENG and N. MA
Predicting Welding Residual Stress of a Multi-pass
P92 Steel Butt-Welded Joint with Consideration of
Phase Transformation and Tempering Effect
J. Mater. Eng. Perform., 28, 12 (2019), 7452-7463.

X. HOU, D. DU, B. CHANG and N. MA
Influence of Scanning Speed on Microstructure andProperties of Laser Cladded Fe-Based Amorphous
Coatings
Materials, 12, 8 (2019), 1-15.

Y. GAO, C. SHAO, H. CUI, N. MA and F. LU
Failure Competition Behavior of 9Cr/617 Dissimilar
Welded Joint during LCF Test at ElevatedTemperature
Mater. Sci. Eng. A., (2019), 138810(10Pages).

32

S. REN, Y. MA, S. SAEKI, Y. IWAMOTO and N. MA
Numerical Analysis on Coaxial One-Side Resistance
Spot Welding of Al5052 and CFRP Dissimilar
Materials
Materials and Designs, (2019), 1-10.

H. YUTA, G. SASAKI, K. HASHI and F. MINAMI
Mechanism of Improvement of Mechanical
Properties of Cu-contained Low Alloy Steel byIntercritical Quenching
Tetsu-to-Hagane, 105, 11 (2019), 1059-1069 (inJapanese).

Y. MA, Y. B. LI and N. MA
Friction Self-Piercing Riveting of Magnesium Alloy
AZ31B and Aluminum Alloy AA6061-T6
Proc. National Symp. on Welding Mechanics andDesign 2019, (2019), 360-364 (in Japanese).

F. MINAMI
International Standardization of Brittle Fracture
Assessment Procedure for Steel Structures: ISO 27306
Proc. of National Symposium on Welding
Mechanics and Design 2019, (2019) (in Japanese).

S. REN, Y. MA, S. SAEKI, Y. IWAMOTO, K. NARASAKI and
N. MA
Numerical Analysis of Coaxial One-Side Resistance
Spot Welding of Al5052/CFRP by Thermal
Mechanical-Electric Weak Coupling FEM Solver
JWRIAN
Proc. National Symp. on Welding Mechanics andDesign 2019, (2019), 365-370 (in Japanese).

T. KAWABATA, F. TONSHO, Y. NISHIZONO, N. NAKAMURA and
Y. TAKASHIMA
Controlling Factors for Roughness Increases on
Cleavage Fracture Surfaces and Crack Branching in
Polycrystalline Steel
Theor. Appl. Fract. Mec., 100 (2019), 171-180.
Y. TAKASHIMA, T. KAWABATA, R. DEGUCHI, S. YAMADA and
F. MINAMI
Increase in Micro-Cracks Beneath Cleavage Fracture
Surface in Carbon Steel ESSO Specimens
Theor. Appl. Fract. Mec., 101 (2019), 365-372.

A. KUNUGI, H. UEDA, N. MA and H. SERIZAWA
Investigation about the Influence of Material
Properties in High Temperature for Welding
Deformation Analysis
Proc. National Symp. on Welding Mechanics andDesign 2019, (2019), 492-496 (in Japanese).

Y. SUZUKI, F. YANAGIMOTO, T. HEMMI, Y. TAKASHIMA,
T. KAWABATA and K. SHIBANUMA
Relationship between Grain Size and Cleavage Crack
Propagation Resistance in Ferrite-Pearlite Steels
13th Int. Conf. on Mechanical Behaviour ofMaterials (ICM13), (2019).

Y. NOGUCHI, H. OKADA, M. MIYAHARA and F. MINAMI
Thermo-Mechanical Fatigue Life Evaluation for Ni23Cr-7W Alloy by Strain Range Partitioning Method
J. Soc. Mater. Sci. Jpn, 68, 2 (2019), 83-90 (inJapanese).

Y. TAKASHIMA, Y. ITO, F. LU and F. MINAMI
Fracture Toughness Evaluation for Dissimilar Steel
Joints by Charpy Impact Test
Weld. World, 63, 5 (2019), 1243-1254.

G. AN, J.-U. PARK, M. OHATA and F. MINAMI
Fracture Assessment of Welded Joints of HighStrength Steel in Pre-Strained Condition
Appl. Sci., 9 (2019).

N. NAKAMURA, T. KAWABATA, Y. TAKASHIMA, Y. NISHIZONO
and F. YANAGIMOTO
Effect of Triaxial Stress Distribution upon Roughnessof Brittle Fracture Surface
12th Int. Conf. on Multiaxial Fatigue and Fracture(ICMFF12), (2019).

Y. HONMA, G. SASAKI, K. HASHI and F. MINAMI
Improvement on Toughness of Weld Heat Affected
Zone of Cu-Containing Low Alloy Steel of Long Scale
Forging for Offshore Applications by Optimizing
Chemical Composition
ASME 2019 38th Int. Conf. on Ocean, Offshore andArctic Engineering, OMAE2019-95816 (2019).

Y. TAKASHIMA, T. KAWABATA and F. MINAMI
Numerical Investigation of Temperature Rise Near
Crack-Tip in Steel Plate During Brittle Crack
Propagation
10th Int. Conf. on Impact Fracture (ISIE2019), (2019),
174-180.

F. MINAMI
Strength and Fracture of Welded Joints
Textbook for Summer School of Welding
Engineering, (2019), 119-172 (in Japanese).

33

F. YANAGIMOTO, T. HEMMI, Y. SUZUKI, Y. TAKASHIMA,
T. KAWABATA and K. SHIBANUMA
Contribution of Grain Size to Resistance against
Cleavage Crack Propagation in Ferritic SteelActa Mater., 177 (2019), 96-106.

K. SOEJIMA, Y. SHINTAKU, S. TSUTSUMI and K. TERADA
Cohesive-traction Embedded Elasto-plastic Modelwith Combined Isotropic-kinematic Hardening for
Fatigue Lifetime Prediction
Proc. conference on computational engineeringand science, 24 (2019), 1-4 (in Japanese).

T. KAWABATA, K. SHIBANUMA, Y. TAKASHIMA and M. OHATA
Deepening of Understanding of Brittle Crack
Propagation Behavior of Steels and New Approachfor High Arrestability
Bull. Iron Steel Inst. Jpn., 24, 11 (2019), 720-730 (inJapanese).

S. ISHIBASHI, Y. SHINTAKU, S. TSUTSUMI and K. TERADA
Numerical Analysis of Crack Propagation Due toHydrogen Embrittlement with Anisotropic Behaviorof Cleavage Fracture
Proc. conference on computational engineeringand science, 24 (2019), 1-4 (in Japanese).

Y. TAKASHIMA, T. HANDA, T. SAKIMOTO, R. DEGUCHI and
F. MINAMI
Fracture Toughness Evaluation Using Instrumented
Charpy V-notch Impact Test
Proc. National Symp. on Welding Mechanics andDesign 2019, (2019), 136-140 (in Japanese).

K. MORITA, M. MOURI, S. TSUTSUMI and R. FINCATO
Fatigue life Prediction Method for Non-load Carrying
Fillet Joints Using an Unconventional Elasto-plasticity
Model
The 72nd IIW Annual Assembly & Int. Conf., XIII2812-19 (2019), 1-10.

S. TSUTSUMI, R. FINCATO and H. MOMII
Effect of Tangential Plasticity on Structural Response
under Non-Proportional Cyclic Loading
Acta. Mech. 230, (2019), 2425-2446.

R. GADALLAH and S. TSUTSUMI
Critical Investigation on the Effect of Steel Strength
on Fatigue Crack Growth Retardation Including aSingle Tensile Overload
Theor. Appl. Fract. Mec., 104 (2019), 102326.

T. NAKAGOMI, H. KANKO, S. TSUTSUMI, S. KANEZAKI and
K. KISHI
Experimental Study on Influence of Scallop Details
Applied Reinforcement Welding on Fracture andDeformation Capacity of Real Scale Experiments in
Field Welding
Steel Constr. Eng., 25, 100 (2019), 29-41 (inJapanese).

T. OHTA, S. TSUTSUMI and N. MA
Numerical Analysis of Shot Peening with Incident
Angle
J. Jpn. Soc. Technol. Plasticity, 60, 704 (2019), 8-13
(in Japanese).
S. FUKUMA, Y. SAKINO, N. MATSUMOTO, K. INOSE and
S. TSUTSUMI
Application of Laser and Laser/arc Hybrid Welding on
H-SA700(Part 5) Results of Fatigue Test of Butt Joints
Welded by Laser/arc Hybrid Welding
Proc. annual research meeting Chugoku Chapter,
Architectural Institute of Japan, 42 (2019), 247-250(in Japanese).

T. KIRIYAMA, T. KAMADA, S. TSUTSUMI, K. TERASAWA,
S. HATTORI, K. KARUKAYA and S. SUZUKI
Study on the Estimating Method for Ground Anchors'Tension Focusing the Distribution of Surface Stresson the Bearing Plate
J. Jpn. Soc. Civil Engi., Ser. E2, 75, 2 (2019), 95-105(in Japanese).
K. YOSHIDA, H. WAKAMATSU, E. MORINAGA, E. ARAI,
S. TSUTSUMI and T. KUBO
Pattern Shape Optimization of a Two Piece Brassiere
Cup to Improve Its Design Efficiency
Trans. Inst. Syst. Contr. Inf. Eng., 32, 5 (2019), 192202.

T. NAKAGOMI, H. KANEKO, S. TSUTSUMI, R. HORIBA and
T. KASUGA
Experimental Study on Deformation Capacity of Field
Welding Beam to Column Joint with Different BeamEnd Details
Q. J. Jpn. Weld. Soc., 37, 4 (2019), 162-172 (inJapanese).

K. MORITA, M. MOURI, S. TSUTSUMI and R. FINCATO
Numerical and Experimental Investigation of Crack
Initiation Life of Non-load Carrying Fillet Welded
Joint
Proc. conference on computational engineeringand science, 24 (2019), 1-4 (in Japanese).

J. TAMARI, T. ISHIKAWA, M. HIROHATA and S. TSUTSUMI
Fatigue Strength Improvement for Weld Root of Sole
Plate by Filling Resin
J. Constructional Steel, 27 (2019), 749-758 (inJapanese).

34

Y. KIYOKAWA, S. TSUTSUMI and R. FINCATO
Prediction of Cyclic Softening and Crack Initiation Life
Using Accelerated Fatigue SS Model
Proc. National Symp. on Welding Mechanics andDesign 2019, (2019), 86-89 (in Japanese).

R. FINCATO, S. TSUTSUMI, T. SAKAI and K. TERADA
Influence of Hard and Soft Inclusions inside a Ferritic
MatrixProc. 12th international conference on multiaxial
fatigue and fracture, (2019), 1-10.

G. DAIMON, S. TSUTSUMI and R. FINCATO
Study on the Thickness Effect to Joint Fatigue
Strength
Proc. National Symp. on Welding Mechanics andDesign 2019, (2019), 90-93 (in Japanese).

R. FINCATO and S. TSUTSUMI
Coupled Damage-Viscoplasticity Model for Metals
under Cyclic Loading Conditions
Procedia Struct. Integrity, 18 (2019), 75-85.
Y. X. LUO, R. MA, M. HE, R. FINCATO and S. TSUTSUMI
Experimental Research and Parametric Study on the
Fatigue Performance of Slotted Tubular Connection
Based on the Effective Notch Stress ApproachProc. 16th East Asia-Pacific Conf. on StructuralEngineering & Construction (EASEC16), (2019), 18.

S. ISHIBASHI, Y. SHINTAKU, K. TERADA and S. TSUTSUMI
Numerical Analysis of Crack Propagation with
Cleavage Fracture and Dependence of Toughness on
Hydrogen Concentration
Proc. National Symp. on Welding Mechanics andDesign 2019, (2019), 98-101 (in Japanese).
S. TSUTSUMI, H. NAGAHAMA and R. FINCATO
Development of Fatigue Crack Initiation and
Propagation Life Assessment Considering Hydrogen
EffectProc. National Symp. on Welding Mechanics andDesign 2019, (2019), 112-116 (in Japanese).

M. SHIBAHARA, A. KAWAHARA, M. NAKATANI, Y. YAMAZAKI,K. ODA, S. TADANO, Y. NAKATANI, D. TAKAKURA,
H. FUKAZAWA, A. KUNUGI, S. NARITA, N. YANAGIDA,
H. MURAKAMI, T. ONOZATO, T. NOTO, N. OTANI, H. UEDA,
H. NAGAKI, S. MAEDA, H. SERIZAWA, N. MA andH. MURAKAWA
Objectives and Activities of Research Grope for
Practical Use of Welding Mechanics Simulation
Proc. National Symp. on Welding Mechanics andDesign 2019, (2019), 469-472 (in Japanese).

K. TAKATA, S. TSUTSUMI, R. FINCATO and M. OGAWA
Fatigue Life Assessment of Butt Weld Joint with
Backing Plate
Proc. National Symp. on Welding Mechanics andDesign 2019, (2019), 270-274 (in Japanese).
Y. KURIHARA, Y. SAKINO and S. TSUTSUMI
Effect for the Residual Stress and Fatigue Strength byHammer Peening on High-Strength Base Metal
Proc. National Symp. on Welding Mechanics andDesign 2019, (2019), 282-286 (in Japanese).

[General Welding]
H. XIA, W. TAO, L. LI, C. TAN, K. ZHANG and N. MA
Effect of Laser Beam Models on Laser Welding–
Brazing Al to SteelJ. Opt. Laser Technol., 122, 2 (2019), 105845.

S. TSUTSUMI, H. SHIBATA, R. FINCATO, H. AKEBONO andM. YAMAMOTO
Fatigue Strength Assessment of Lap Fillet Welded
Joint for High-Tensile Steel Sheets Using Hot-Wire
Laser Welding Process
Proc. National Symp. on Welding Mechanics andDesign 2019, (2019), 371-375 (in Japanese).
R. FINCATO and S. TSUTSUMI
Coupled Damage-Viscoplasticity Model for Metals
under Cyclic Loading Conditions
Proc. 25th Int. Conf. on Fracture and Structural
Integrity, (2019), 1-11.

35

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/