Organization and Staff (December 2023)
DirectorDr. Fujii Hidetoshi

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

Dr. TANAKA Manabu
Dr. KOMEN Hisaya
Dr. TASHIRO Shinichi
Dr. WU Dongsheng
Dr. NAKATA Kazuhiro
Dr. HOSOI Koichi
Dr. XIAO Xiao
Dr. FUJIYAMA Shoji
Dr. NGOC Quang Trinh
Dr. ISHIDA Kazuya

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

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

3) Micro Joining
Professor
Associate Professor
Guest Professor
Guest Professor
Guest Professor
Specially Appointed Researcher
Specially Appointed Researcher

Dr. NISHIKAWA Hiroshi
Dr. TATSUMI Hiroaki
Dr. CHAN Yon Cheong
Dr. KAO C. Robert
Dr. TAKAHASHI Yasuo
Dr. NAOE Takuya
Dr. JIN Zhi

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

Dr. TSUKAMOTO Masahiro
Dr. SATO Yuji
Dr. TAKENAKA Keisuke
Dr. KIKUCHI Yasushi
Dr. NISHIO Masahiro
Ms. HIGASHINO Ritsuko
Mr. YOSHIDA Norio
Mr. TOKUMOTO Jumpei5) Advanced Engineering Science
Guest Professor

Dr. KATO Hidemi

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

Dr. ITO Kazuhiro
Dr. TAKAHASHI Makoto
Dr. YAMAMOTO Hajime
Dr. HONG Seong Min
Dr. ZHAO Bingbing
Dr. OGAWA Kazuhiro

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

Dr. FUJII Hidetoshi
Dr. YAMASHITA Takayuki
Dr. MIURA Takuya
Dr. USHIODA Kohsaku
Dr. MORISADA Yoshiaki
Dr. CHEN Juan
Dr. AOKI Yasuhiro
Dr. SHARMA Abhishek
Dr. NAGIRA Tomoya
Mr. KAWAI Teruaki
Dr. KITA Takuji
Dr. SHOTRI Rishabh
Mr. KAMAI Masayoshi
Mr. AIBARA Takumi
Mr. ITO Tetsuro3) Composite Materials Processing
Professor
Professor
Assistant Professor
Specially Appointed Assistant Professor
Guest Professor
Guest Professor
Guest Professor
Specially Appointed Researcher
Specially Appointed Researcher
Specially Appointed Researcher
Guest Researcher

Dr. KONDOH Katsuyoshi
Dr. UMEDA Junko
Dr. KARIYA Shota
Dr. ISSARIYAPAT Ammarueda
Dr. MA Qian
Dr. YANG Yafeng
Dr. LI Shufeng
Ms. FUJII Hiroko
Mr. MINAMITANI Ryoji
Mr. HUANG Jeff
Dr. SHITARA Kazuki

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

Dr. MA Ninshu
Dr. WANG Qian
Dr. GENG Peihao
Mr. NARASAKI Kunio
Dr. LU Fenggui

2) Joining Design and Structuring
Professor
Assistant Professor

Dr. MIKAMI Yoshiki
Dr. Zhou Hongchang3) Joining Metallurgical Evaluation
Professor
Associate Professor
Assistant Professor

Dr. IKEDA Rinsei
Dr. KADOI Kota
Dr. HOU Yuyang

4. Research Center for Additive Joining Application
Center Director, Professor
1) Green Additive Manufacturing
Professor *Assistant Professor *Dr. ITO Kazuhiro
Dr. ABE Hiroya
Dr. KOZAWA Takahiro

2) Lithographic Additive Manufacturing
Professor
Assistant Professor

Dr. KIRIHARA Soshu
Dr. SPIRRETT Fiona

3) Additive Manufacturing Mechanism
Professor
Professor
Assistant Professor

Dr. KONDOH Katsuyoshi
Dr. UMEDA Junko
Dr. KARIYA Shota

4)Laser Additive Manufacturing
Professor
Associate Professor
Assistant Professor

Dr. TSUKAMOTO Masahiro
Dr. SATO Yuji
Dr. TAKENAKA Keisuke

5. Joint Interface Microstructure Characterization Room
Associate Professor

Dr. TAKAHASHI Makoto

6.Global D&I Promotion Office
Professor *Associate Professor
Assistant Professor *Assistant Professor *Assistant Professor *Technical Staff *Dr. UMEDA Junko
Ms. KATSUMATA Mihoko
Dr. HONG Seong Min
Dr. GENG Peihao
Dr. SPIRRETT Fiona
Ms. UEHARA Kunika

7. New Normal Manufacturing Consortium Office
Professor
Guest Researcher

Dr. SERIZAWA Hisashi
Mr. KAWAHARA Atsushi

8. JFE Welding Research Alliance Laboratories
Director, Professor *Vice Director, Guest Professor
Professor *Professor *Professor *Professor *Associate Professor *Associate Professor *Dr. MIKAMI Yoshiki
Dr. TAGAWA Tetsuya
Dr. FUJII Hidetoshi
Dr. TSUKAMOTO Masahiro
Dr. TANAKA Manabu
Dr. IKEDA Rinsei
Dr. SATO Yuji
Dr. KOMEN Hisaya

9. DAIHEN Welding and Joining Research Alliance Laboratories
Director, Professor *Dr. FUJII Hidetoshi
Vice Director, Guest Professor
Dr. ERA Tetsuo
Specially Appointed Professor
Dr. ASAI Satoru
Specially Appointed Assistant Professor
Dr. MATSUDA Natsume
Guest Associate Professor
Dr. KADOTA Keiji
Professor *Dr. TANAKA Manabu
Professor *Dr. ITO Kazuhiro
Professor *Dr. TSUKAMOTO Masahiro
Professor *Dr. SETSUHARA Yuichi
10. Nippon Steel Future Manufacturing Research Alliance Laboratories
Director, Professor *Dr. FUJII Hidetoshi
Vice Director, Guest Professor
Dr. NISHIBATA Hitomi
Guest Professor
Dr. FUJIMOTO Hiroki
Specially Appointed Assistant Professor
Ms. JOTOKU Kana
Guest Professor
Dr. INOUE Hiroshige
Guest Researcher
Mr. OKADA Toru
Guest Researcher
Mr. WATANABE Koutarou
Guest Researcher
Mr. MATSUI Sho
Guest Researcher
Mr. NOMOTO Masashi
Guest Researcher
Mr. SHIMADA Naoaki
Professor *Dr. TANAKA Manabu
Professor *Dr. ITO Kazuhiro
Professor *Dr. MIKAMI Yoshiki
Associate Professor *Dr. KADOI Kota
Professor *Dr. SAIDA Kazuyoshi
Professor *Dr. HIRATA Hiroyuki
Professor *Dr. MORI Hiroaki
Professor *Dr. OGURA Tomo
Assistant Professor *Dr. YAMASHITA Shotaro
11. Osaka Fuji "Advanced Functional Processing" Joint Research Chair
Professor *Dr. TSUKAMOTO Masahiro
guest Professor
Dr. ABE Nobuyuki
Associate Professor *Dr. SATO Yuji
Specially Appointed Assistant Professor
Mr. HAYASHI Yoshihiko
Specially Appointed Assistant Professor
Mr. MIZUTANI Masami
Specially Appointed Researcher
Mr. IKEDA Keiichirou
Guest Researcher
Dr. MORIMOTO Kento
Guest Researcher
Mr. TATSUMI Yoshihiro
12. Advanced Joint Production System Joint Research Chair
Professor *Dr. FUJII Hidetoshi
Specially Appointed Professor
Mr. MUKUDA Muneaki
Guest Researcher
Mr. HARADA Naohiko
Guest Researcher
Mr. MURASE Keisuke
Specially Appointed Associate Professor *Dr. MORISADA Yoshiaki

13. Strategy Office for Promotion of Inter-Institute Collaborations
Leader, Professor *Dr. SETSUHARA Yuichi
Professor
Dr. ABE Hiroya
Associate Professor
Dr. IZAWA Seiichiro
Assistant Professor
Dr. MOKUDAI Takayuki
Assistant Professor
Dr. KOZAWA Takahiro
Specially Appointed Researcher
Dr. LI Fei
14. Global and Industrial Collaborative Research Center for Computational Welding Science(CCWS)
Leader, Professor *Dr. MA Ninshu
Guest Professor
Dr. MURAKAWA Hidekazu
Guest Professor
Dr. HIRAOKA Kazuo
Guest Professor
Dr. LI ChangJiu
Guest Professor
Dr. YASUKI Tsuyoshi
Guest Professor
Dr. NAKAO Kazunari
Guest Professor
Dr. FUJIKUBO Masahiko
Guest Associate Professor
Dr. SHIBAHARA Masakazu
15. Joining Technology Hub
Leader, Professor *Professor *Professor *Professor *Professor *Professor
Professor *Professor *Associate Professor *Assistant Professor *Assistant Professor*
Specially Appointed Professor
Specially Appointed Associate Professor *Specially Appointed Associate Professor *Specially Appointed Associate Professor *Technical Assistant*
Graduate School of Engineering, Professor *Graduate School of Engineering, Professor *Graduate School of Engineering, Professor *Graduate School of Engineering, Professor *Graduate School of Engineering, Associate Professor *Graduate School of Engineering, Associate Professor *Graduate School of Engineering, Associate Professor *Graduate School of Engineering, Assistant Professor *Graduate School of Engineering, Assistant Professor *Dr. FUJII Hidetoshi
Dr. TANAKA Manabu
Dr. ITO Kazuhiro
Dr. SERIZAWA Hisashi
Dr. IKEDA Rinsei
Dr. MA Ninshu
Dr. TSUKAMOTO Masahiro
Dr. MIKAMI Yoshiki
Dr. SATO Yuji
Dr. YAMASHITA Takayuki
Dr. MIURA Takuya
Dr. USHIODA Kosaku
Dr. MORISADA Yoshiaki
Dr. AOKI Yasuhiro
Dr. SHARMA Abhishek
Mr. OGURA Takuya
Dr. HIROSE Akio
Dr. SAIDA Kazuyoshi
Dr. OHATA Mitsuru
Dr. SANO Tomokazu
Dr. OGURA Tomo
Dr. OGINO Yosuke
Dr. NOMURA Kazufumi
Dr. MATSUDA Tomoki
Dr. SHOJI Hiroto

16. Co-Creation Consortium for Joining and Welding with Blue Diode Laser
Professor *Dr. TSUKAMOTO Masahiro
Associate Professor *Dr. SATO Yuji
Guest Professor
Dr. ABE Nobuyuki
Assistant Professor *Dr. TAKENAKA Keisuke
Specially Appointed Researcher
Ms. HIGASHINO Ritsuko
Specially Appointed Researcher
Mr. YOSHIDA Norio
17. Industry Cooperation Office
Professor *Guest Professor* Supplementary Assignment

Dr. SETSUHARA Yuichi
Dr. SUGA Tetsuo

Transactions of JWRI, Vol.52, 2023
CONTENTSRESEARCH ACTIVITIES OF JWRI
Research Division of Materials Joining Process
Dep. of Energy Control of Processing ………………………………………………………………………….

1

Dep. of Energy Transfer Dynamics ……………………………………………………………………………….

2

Dep. of Micro Joining ……………..…………………………………………………………………………………… 3
Dep. of Laser Materials Processing ……………………………………………………………………………… 4
Research Division of Materials Joining Mechanism
Dep. of Welding Mechanism ……………………………………………………………………………………….. 5
Dep. of Joint Interface Structure and Formation Mechanism .…..…………………………………. 6
Dep. of Composite Materials Processing ...…………………………………………………………………..

7

Research Division of Materials Joining Assessment
Dep. of Joining Mechanics and Analyses …………………………………………………..……….…….….. 8
Dep. of Joining Design and Structuring …..……………………………….…………………..……………… 9
Dep. of Joining Metallurgical Evaluation ….………………………………………………….………………. 10
Research Center for additive Joining Application(RAJA)
Dep. of Green Additive Manufacturing .…………………………………………..…………….………….…. 11
Dep. of Lithographic Additive Manufacturing ………………………………………..…………..….….….12
Dep. of Additive Manufacturing Mechanism …………………………………….………………..………...13
Dep. of Laser Additive Manufacturing …………………………………………………………………………..14
Joint Interface Microstructure Characterization Room ..……………………………..…………..….….….15
Global D&I Promotion Office ……………………………………...……………………………..…………..….….….16
New Normal Manufacturing Consortium Office ………...……………………………..…………..….….…..17
Osaka Fuji "Advanced Functional Processing" Joint Research Chair ………………………..…….…18
Strategy Office for Promotion of Inter-Institute Collaborations………………………………………..19

CONTRIBUTION TO OTHER ORGANIZATIONS ………………………………………..….….….…… 20

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. Iida, H. Komen, M. Shigeta, M. Tanaka, “Splashing of tungsten-based anode during arc discharge”, Scientific
Reports, (2023), 13, 12210.
Y. Asai, H. Komen, M. Tanaka, M. Nomoto, K. Watanabe, T. Kamo, “Investigation for Oxygen Transfer
Mechanism During Gas Tungsten Arc Welding with Carbon Dioxide Gas”, Q. J. Jpn. Weld. Soc., (2023), 41-2,
49s-52s.
W. Zhao, S. Tashiro, A. B. Murphy, M. Tanaka, X. Liu, Y. Wei, "Deepening the understanding of arc characteristics
and metal properties in GMAW-based WAAM with wire retraction via a multi-physics model", J. Manuf.
Process., (2023), 97, 260-274.
X. Wang, S. Tashiro, M. Tanaka, A. B. Murphy, "Numerical Investigation of the Iron and Oxygen Transport in Arc
Plasma During an Activated Tungsten Inert Gas Welding Process", Plasma Chemistry and Plasma Processing,(2023), DOI:10.1007/s11090-023-10359-2.

1

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

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

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

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

Major Papers

K Takenaka, A Jinda, S Nakamoto, S Toko, G Uchida, Y Setsuhara, “Direct bonding of stainless steel and PEEK
using non-thermal atmospheric pressure plasma-assisted joining technology”, J. Manuf. Process., 105 (2023),
276-281.
K Takenaka, M Endo, H Hirayama, S Toko, G Uchida, A Ebe, Y Setsuhara, “Analysis of residual oxygen during aIGZO thin film formation by plasma-assisted reactive sputtering using a stable isotope”, Vacuum, 215 (2023),
112227.
K Takenaka, H Hirayama, M Endo, S Toko, G Uchida, A Ebe, Y Setsuhara “Analysis of oxygen-based species
introduced during plasma assisted reactive processing of a-IGZO films”, Jpn. J. Appl. Phys., 62 (2023), SL1018.
K Takenaka, T. Yoshitani, M Endo, H Hirayama, S Toko, G Uchida, A Ebe, Y Setsuhara “Plasma processing
technique by combination of plasma-assisted reactive sputtering and plasma annealing for uniform electricalcharacteristics of InGaZnO thin film transistors formed on large-area substrates” Jpn. J. Appl. Phys., 62 (2023),
SI1005.
S. Toko, T. Hasegawa, T. Okumura, K. KAMATAKI, K. TAKENAKA, K. Koga, M. SHIRATANI, Y. Setsuhara,“Contribution of active species generated in plasma to CO2 methanation” Jpn. J. Appl. Phys., 62 (2023), SL1023.

2

Research Division of Materials Joining Process, Dep. of Micro Joining
Research summary
The main research objectives are for electronics packaging to develop advanced joint materials,
to establish advanced micro joining processes, and to elucidate the mechanisms of the micro joining
processes. Especially, the creation of the functional joint materials, the development of novel
advanced micro processes by various energy sources, the understanding of interfacial behaviors in
nano-/micro-scale, and the enhancement of the highly reliable joints based on the control ofinterfacial structure and performance are performed.

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(6) Simulation-based evaluation of micro joints 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

H. Tatsumi, C. R. Kao and H. Nishikawa, “Impact of crystalline orientation on Cu–Cu solid-state bonding
behavior by molecular dynamics simulations”, Sci. Rep., 13 (2023), 23030.
J. Wang, S. Yodo, H. Tatsumi, C. R. Kao and H. Nishikawa, “Thermal conductivity and reliability reinforcement
for sintered microscale Ag particle with AlN nanoparticles additive”, Mater. Charact., 203 (2023), 113150.
X. Liu, H. Tatsumi, Z. Jin, Z. Zhen, H. Nishikawa, “Fabrication and thermo-mechanical properties of Ag9In4
intermetallic compound”, Sci. Rep., 162 (2023), 108028.
S. Nitta, H. Tatsumi, H. Nishikawa, “Strength-enhanced Sn–In low-temperature alloy with surface-modified
ZrO2 nanoparticle addition,” J. Mater. Sci.-Mater. Electron., 34 (2023), 2066.
J. Wang, S. Yodo, H. Tatsumi, H. Nishikawa, “Reliability-enhanced microscale Ag sintered joint doped with
AlN nanoparticles,” Mater. Lett., 349 (2023), 134845.

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.

Clarification of laser welding phenomena with 16 kW
disk laser

Major Papers
Takenaka, K., Sato, Y., Fujio, S., & Tsukamoto, M., “Comparison of melting efficiency between blue, green, andIR lasers in pure copper welding”, J. Laser Appl., 35(4) (2023).
Kurita, Y., Sato, Y., Fujio, S., Mizutani, M., & Tsukamoto, M., “Influence of the laser-induced plume on welding
behavior in keyhole welding for stainless steel using a 16 kW disk laser, J. Laser Appl., 35(4) (2023).
Maeda, K., Sato, Y., Suzuki, R., Suga, T., & Tsukamoto, M., “Influences of cold-sprayed steel interlayer onmechanical properties of laser welded steel/Al lap joints”, J. Mater. Process. Technol., 320 (2023), 118103.
Kato, S., Ono, S., Sunahara, A., Sato, Y., & Tsukamoto, M., “Optical properties of liquid pure copper by density
functional theory”, J. Phys. Condensed Matt., 35(32) (2023), 324004.
Kato, S., Ono, S., Sunahara, A., Sato, Y., & Tsukamoto, M., “Optical properties of liquid pure copper by density
functional theory”, Journal of Physics: Condensed Matter, 35(32) (2023), 324004.

4

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

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

(c)

300

(d)

W-rich layer

0.1

/ MPa

RS
AS

(b)

Stress ratio:(e)Stress amplitude,

(a)

200

50%UP
FSPed
As-welded

100
10000
104

100000105

1000000
106

Number of cycles to failure,

10000000
107(Cycles)

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.

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

(d) 3D image of the 100 mm/s-105 A, Al/Cu joints,
reconstructed by the serial sectioning technique. The
volumes of Al, Cu, and Al/Cu-mixed zone are colored gray,orange, and yellow, respectively. Their (e) top-view and (f)cross-sectional 2D images with the mixed zone highlighted.

Deformation induced phase transformation from FCC to
BCC occurred in an impact test of δ-ferrite-containing γ
stainless steel deposited metal at liquid N2 temp., resulting
in increasing ultralow-temp. toughening.

Major Papers
Habib H. Zargai, K. Ito, A. Sharma, “Effect of workpiece vibration frequency on heat distribution and material
flow in the molten pool in tandem-pulsed gas metal arc welding”, Int. J. Adv. Manuf. Technol., 129 (2023), 25072522.
M. Liu, L. Zhang, B. Zhao, F. Chen, X. Xia, Y. Yu, H. Yamamoto, K. Ito, “Orientation dependence of plastic
deformation of sintered Nd-Fe-B magnets at high temperature”, Acta Mater., 244 (2023) 118559.
H. Yamamoto, Y. Yanagi, K. Ito, H. Komen, M. Tanaka, Akihisa Murata, “Strengthening of Al/Cu dissimilar joint
due to complicated interface produced by pulsed TIG welding with a constricted nozzle”, QJ-JWS, 41 (2023)
168-177.
Y. Kitagawa, H. Maniwa, M. Abe, M. Suzuki, Y. Hohino, R. Oda, H. Yamamoto, S.M. Hong, K. Ito, “Low-temp.
Toughness Increase for Austenitie Stainless Steel Weld Mwtal for Cryogenic Use”, IIW Annual Assembly 2023,
held on July in Singpore.

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
R. Shotri, T. Ogura, P. Geng, Y. Morisada, K. Ushioda, and H. Fujii, “Numerical and experimental investigation ofpressure-controlled joule-heat forge welding of steel tubes”, J. Manuf. Process., 106(2023), 240-253.
A. Sharma, Y. Morisada, K. Ushioda, and H. Fujii, “Elucidation on the correlation between thermal stability of
Al13Fe4 intermetallic phase and mechanical properties of the Al-Fe alloy fabricated via friction stir alloying”,
J. Alloys Compd., 967(2023), 171732.
T. Aibara, Y. Morisada, and H. Fujii, “Development of a cold spot joining method that enables sound joining ofcarbon steel below the A1 temperature”, Sci. Technol. Weld. Join., 28(2023), 964-973.
T. Ito, M. Kamai, T. Miura, Y. Morisada, and H. Fujii, “Dissimilar joining of carbon steel, pure nickel and aluminumalloys by center-driven double-sided linear friction welding”, J. Adv. Join. Process., 8(2023), 100165.
H. Miao, S. Tsutsumi, T. Yamashita, Y. Morisada, and H. Fujii, “Fatigue strength improvement of linear friction
welded butt joints of low carbon steel by pressurizing after oscillation”, J. Manf. Process., 102(2023), 795-805.

6

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

Research subjects(1) Powder based titanium materials with static and dynamic high-strength & ductility(2) Core-shell structured Ti-N composite powders via solid-gas reaction(3) Laser powder bed fusion titanium alloys strengthened by solid-solution and nano-dispersoids(4) Nano-carbon materials reinforced metal matrix composites via local interface mechanics(5) Direct bonding of plastic materials to metals by molecular structure and fine bubbles control(6) Local surface potential difference in CNTs reinforced metal materials and its applications(a) Stress-strain curves for the as-extruded
and heat-treated Ti-0.77O samples and (b)Dependence of the tensile properties andcrack density on the grain size of Ti-0.77O.

Major Papers

Secondary electron images confirming thepresence of cracks after the tensile tests in (a) asextruded and (b) 700 °C heat-treated of Ti-0.77O.
(c-1) TEM image of the closed cracks area and (c-2and c-3) SAD patterns of the yellow circles in (c-1).

S. Kariya, A. Issariyapat, A. Bahador, J. Umeda, J. Shen, K. Kondoh, “Effect of grain size on the tensile ductility
and fracture mechanism of Ti–O alloys”, Materials Science and Engineering A 874 (2023) 145068.
S. Abolkassem, A. Elsayed, S. Kariya, J. Umeda, K. Kondoh, ”Influence of thermo-mechanical processing on
microstructure and properties of bulk metallic glassy alloys-reinforced Al matrix composites prepared bypowder metallurgy”, Journal of Materials Research and Technology 27 (2023) 8197-8208.
P. Nyanor, H. M. Yehia, A. Bahador, J. Umeda, K. Kondoh, M. A. Hassan, ”Microstructure and mechanicalproperties of hybrid nano-titanium carbide-carbon nanotubes (nano-TiC-CNT) reinforced aluminium matrix
composite”, Advanced Composite Materials (2023) 1-19.
A. Bahador, A. Amrin, S. Kariya, A. Issariyapat, O. Gokcekaya, G. Zhao, J. Umeda, Y. Yang, M. Qian, K. Kondoh,“Excellent tensile yield strength with ultrafine grain and tailored microstructure in plastically deformed Ti–Re
alloys”, Journal of Alloys and Compounds 967 (2023) 171544.

7

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

Research subjects(1) Finite element analysis of nonlinear thermo-mechanical-metallurgical phenomena in multimaterials additive manufacturing, fusion welding and solid-state joining.
(2) Artificial Intelligent (AI) and digital twin for full manufacturing processes including metal forming,
joining, welding and assembling of structures.
(3) Extended Iso-Geometric Analysis (X-IGA) for structure sensing and anisotropic hardening
material model

Major Papers
Q. Wang, N. Ma, J.M. Shi, W. Huang, X.T. Luo, P.H. Geng, M.X. Zhang, C.J. Li, “Unraveling microforging principle
during in situ shot-peening-assisted cold spray additive manufacturing”, Materials&Design, 236 (2023)112451,
1-14.
W. Huang, Q. Wang, N. Ma, H. Kitano, “Residual stress distribution characteristics in wire-arc additive
manufactured layers of low transformation temperature materials”, International Communications in Heat andMass Transfer, 148 (2023) 107066, 1-11.
Z.X. Yu, N. Ma, H. Murakawa, G Watanabe, M. Liu, Y.W Ma, “Prediction of the fatigue curve of high-strength
steel resistance spot welding joints by finite element analysis and machine learning”, The International Journalof Advanced Manufacturing Technology, 128 (2023), 2763–2779.
T.L. Aung, N. Ma, K. Kishida, F.G. Lu, “Unified inverse isogeometric analysis and distributed fiber optic strain
sensing for monitoring structure deformation and stress”, Applied Mathematical Modelling, 120 (2023) 733–
751.

8

Research Division of Materials Joining Assessment, Dep. of Joining Design and
Structuring
Research summary
In this research division, the structural design and fabrication processes are considered in thefollowing two aspects: the "through-process" and "trans-scale." The concept of "through-process"considers the time axis throughout the life cycle, from the design and construction process, such as
welding and joining, to testing, service, repair, reinforcement, and maintenance. The concept of"trans-scale" considers spatial axes ranging from micro to macro, such as the microstructure ofmaterials of welds, welding and joining components, and structures.
We research the evaluation of the performance and reliability of various structures at each ofthese stages and scales. In particular, the effects of thermal processing, represented by residual
stresses and deformations, on the performance of welded and joined components and structures
will be clarified from microscopic and macroscopic perspectives. We will also develop a detailed
and intelligent evaluation method based on these findings. Our goal is to establish design
engineering that contributes to advancing structuring processes such as welding and joining.

Research subjects(1) Development of evaluation methods for strength properties and reliability of structuralmembers, welds and joints(2) Development of performance evaluation technique for welded structures in consideration ofresidual stress
スタッ フ 堤 成一郎（ 准教授） Ricca rd o Fin ca to（ 特任講師）(3) Development of manufacturing process simulation technology for design applications(4) Development of damage evaluation
methodconsidering
microscopic
deformation
各 種構
造物の全性 、耐久plastic性 ）評価
手 法 の 高 精度 化 、補修 補
信頼性（ 安behavior of materials and welds
さ ら に 高性 能を 有す る 材 料お よ び 構造体 の 創出 を 目(5) Evaluation of cracking characteristics considering the heterogeneity of structural materials and
先進 の 計 測技術 を 用 い た 実験と 精緻な 数値シ ミ ュ レ ー ショ ン
weld

信頼性設計学領域（ 接合科学研究

マ ルチ ス ケ ー ル に 展開する こ と によ り 、社 会ニ ー ズ に 応え る 高 度な 研究
数値シミ ュレ ーショ ンによる 疲労現象の解明

構造部材および接合部の健全度診断
超高速衝撃構造性能評価システムによる各種大型構造部材の力学的特性評価

(b)

(a)

(最大荷重： 1 2 0 0 k N , 載荷速度： 1 .2 m /s)
Through-processsimulation of specimen machining, residual stress modification, and fracture toughness testing.
(c)
(d)
(c)

(b)

(d)

γ

γ

γ
α

(c)

α

γ

γ
(b)

α

α

上端・ 引張にγ
伴う 塑性変形αγ
領域の拡大の様子γ（ シミ ュレ ーショ
ン 結果）
α

50 μm
Loading direction

50 μm

50 μm

50 μm

繰返し 荷重結晶塑性FE解析によるミ ク ロ・ メ ゾスケールの変形・
超高速衝撃構造性能評価システム
柱梁溶接接合部のEvaluation of crack
characteristics
of structuralproperties
ofvarious
members
疲労（initiation
き 裂発生・ 伝播）挙動の解明と疲労メmaterials
カ ニズムを Evaluation of mechanical(最大荷重： 1 2 0 0 k N , 載荷速度： 1 .2 m /s)
高速繰返し 曲げ試験
considering microstructure.
by large-scale structural performance evaluation system
考慮し た高精度・ 寿命評価

Major Papers

供試体繰返し 荷重繰返し 荷重

T. Ozawa, T. Kawabata, Y. Mikami, “Local compression process avoiding toughness change”,
Weld. World, 67溶接部
一定荷重(2023), 607-615.特定の結晶から ク ラッ ク 発生
鋼製橋脚に対する正負交番載荷試験

供試体

Ⅰ型断面部材溶接部に対する正負交番曲げ疲労試験

T. Ozawa, T. Kawabata,Y. Mikami, “Improvementof local compression condition for fracture toughness test
実験結果
結晶塑性FE解析による予測結果
with Bayesian optimization”, Weld. World, 67 (2023), 2315-2322.
Co n ta ct

9

TEL : 0 6 -6 8 7 9 -4 8 8 7

E-m a il : tsu tsu m i@ j w ri.o sa k a -u .a c.

Research Division of Materials Joining Assessment, Dep. of Joining Metallurgical
Evaluation
Research summary
Development of innovative manufacturing technology is required to manufacture highperformance machine products and structures for the next generation. Department of Joining
Metallurgical Evaluation conducts research and education for elucidation and control of the factors
on weldment properties to create innovative and attractive techniques of welding & joining as a
final aim. Specifically, our department is working on clarification of the characteristics of spot weldsof dissimilar materials and spot welds using resistance heat generation. We are also working on
elucidation of metallurgical phenomena such as solidification and transformation during welding
and additive manufacturing, and on developing the control method for the microstructures and theproperties of weldments.

Research subjects(1) Development of improvement technology of joint properties of various spot welds.
(2) Reliability assessment of resistance spot welds.
(3) Microstructural evolution during solidification and solid state in welds.
(4) Hot cracking during welding and additive manufacturing process and the prediction technology.
(5) Improvement of mechanical and corrosion properties of welds of stainless steels and Ni-based
alloy by microstructure control.

Cross-sectional photo and IMC thickness distribution of
weld interface of resistance spot weld of aluminum alloy
sheet to high-strength steel sheet

Observation of pitting initiation in heat-affected zone by FESEM(a)α/γInterface and (b)α-ferrite, (c)Location of pitting initiation
Evaluation and analysis of hot cracking susceptibility test

Major Papers
K. Kadoi, M. Kogure, H. Inoue, “Effect of Ferrite Morphology on Pitting Corrosion Resistance of Austenitic
Stainless Steel Weld Metals”, Corrosion Sci. , (2023), 11356.
S. Singh, K. Kadoi, B. Alexandrov, J. Andersson, “The Effects of Chemistry Variations on Hot Cracking
Susceptibility of Haynes® 282® for Aerospace Applications”, Mater. Des. , Vol. 228 (2023), 111853.
K. Kadoi, S. Ueno, H. Inoue, “Effects of Ferrite Content and Concentrations of Carbon and Silicon on
Weld Solidification Cracking Susceptibility of Stainless Steels”, J. Mater. Res. Technol-JMRT , 25 (2023), 13141321.
Y. Hou, K. Kadoi, “Nucleation of Equiaxed δ-ferrite by Accelerating Tin Formation Controlled by Oxide During
Welding of Ferritic Stainless Steel”, Mater. Charact. , 204 (2023), 113212.

10

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

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

Major Papers
T. Naka, J. Valenta, T. Nakane, S. Ishii, M. Nakayama, H. Mamiya, K. Takehana, N. Tsujii, Y. Imanaka, Y.
Matsushita, H. Abe, T. Uchikoshi, H. Yusa, “Phase transitions and slow spin dynamics of slightly inverted
A-site spinel CoAl2-xGaxO4”, J. Phys. Cond. Matter., 36, (2023) 125801.
F. Li, N. Kannnari, J. Maruyama, K. Sato, H. Abe, “Defective multi-element hydroxides nanosheets for
rapid removal of anionic organic dyes from water and oxygen evolution reaction”, J. Hazardous Mater.,
447, (2023), 130803
G. Uchida, K. Masumoto, M. Sakakibara, Y. Ikebe, S. Ono, K. Koga, T. Kozawa, “Single-step fabricationof fibrous Si/Sn composite nanowire anodes by high-pressure He plasma sputtering for high-capacity Liion batteries”, Sci. Rep., 13 (2023) 14280.

11

Research Center for Additive Joining Application, Dep. of Lithographic Additive
Manufacturing
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
F. Spirrett, A. Oi, S. Kirihara, “Additive manufacturing of composite glass/ceramic structures with self-similargeometries”, Open Ceramics”, 17(2023), 100509.
A. Oi, F. Spirrett, S. Kirihara, “Stereolithography additive manufacturing of glass/ceramic composite
Components with self-similar structures”, J. Smart Process., 12(4)(2023), 229-235.
F. Spirrett, S. Kirihara, “Environmental control of solid electrolyte by stereolithography additive manufacturing”,
J. Smart Process, 12(4)(2023), 219-224.

12

Research Center for Additive Joining Application, Dep. of Additive Manufacturing
MechanismResearch summary
Laser powder bed fusion (L-PBF), one of additive manufacturing technologies, is based on a rapid
solidification process, and enables to form ultra-fine microstructures and supersaturated solutionof metal materials, which are effective to improve mechanical properties. This department focuses
on clarification of both unique microstructures formation mechanism and their effect on thestrength and ductility balance of L-PBF titanium alloys.

Research subjects(1) Formation mechanism of unique fine microstructures and orientations of L-PBF Ti alloys(2) High-strengthen metal matrix composites fabricated by L-PBF process(3) Strengthening mechanism of L-PBF Ti alloys – grain refining, solid solution and dispersions(4) Deformation behavior of Gyroid scaffolds L-PBF Ti-Zr alloy and its medical applications

Total yield strength (σys) of LPBF-fabricated samples
with various ZrH2 additions calculated for grain
refinement and O/N solid solution strengthening
compared with the experimental results. The
estimated solid solution strengthening by Zr (ΔσssZr) is calculated by formula Δσys – ΔσHP – (Δσss-O +Δσss-N).

Stress–strain curves of LPBF-fabricated Ti with
ZrH2 additions of (a) 0%, (b) 1%, (c) 2%, (d) 3%, (e)5%, and (f) 10%. Inset shows the dependency oftensile properties on ZrH2 additions. σys: 0.2%
offset tensile yield strength, σUTS: ultimate tensile
strength, EL: elongation.

Major Papers
A. Issariyapat, J. Huang, T. Teramae, S. Kariya, A. Bahador, P. Visuttipitukul, J. Umeda, A. Alhazaa, K. Kondoh,“Microstructure refinement and strengthening mechanisms of additively manufactured Ti-Zr alloys preparedfrom pre-mixed feedstock”, Addit. Manuf., 73 5 (2023), 103649.
J. Peterson, A. Issariyapat, S. Kariya, J. Umeda, K. Kondoh, “The mechanical and microstructural behavior ofheat treated, texture-controlled Ti-10%Mo alloys manufactured by laser powder bed fusion”, Mater. Sci. Eng.
A-Struct. Mater., 884 (2023), 145553.
J. Peterson, S. Kariya, A. Issariyapat, J. Umeda, K. Kondoh, “Experimentally mapping the oriented-tomisoriented transition in laser powder bed fusion Ti-10%Mo alloys”, Scr. Mater., 231 (2023), 115472.
H. Hanada, S. Kariya, K. Shitara, J. Umeda, K. Kondoh, “Controlling Intermetallic Compound Distribution in
Additively Manufactured Ti-Cu Alloys by Heat Treatment”， J. Jpn. Soc. Powder and Powder Metallurgy, 70 6
(2023), 290-297.

13

Research Center for Additive Joining Application, Dep. of Laser Additive
Manufacturing
Research summary
In this department, fundamental studies on laser additive manufacturing (LAM) are performed
and apparatuses for LAM are developed.
In particular, the apparatuses installed with high power blue diode lasers are also developed sincethose lasers enable stable and high efficient melting of metal materials such as copper.
Furthermore, in order to realize high-quality and high-speed LAM, we will experimentally andtheoretically proceed with the analysis of the melting and solidification process of the material bylaser irradiation.
Utilizing the obtained knowledge, we will work on the creation of innovative LAM processes andthe development of equipment and promote their social implementation.

Research subjects(1) Development of additive manufacturing technologies with blue laser(2) Elucidation of laser interaction with metal powders for LAM(3) Creation of new function by laser metal deposition(4) Elucidation of melting and solidification phenomena in LAM process

Additive manufacturing of copper using blue diode laser (a)3D rod formation (b) Micro -coatingof copper alloy (c) JWRI logo by SLM (d) Osaka University's school emblem by SLM

Major Papers
Takazawa, Y., Sato, Y., Takenaka, K., Yamashita, Y., Kunimine, T., & Tsukamoto, M., “High speed coating forpure copper by multi-beam laser metal deposition method with high intensity blue diode lasers”, J. Laser Appl.,
35(1) (2023), 012029.
Promoppatum, P., Chayasombat, B., Soe, A. N., Sombatmai, A., Sato, Y., Suga, T., & Tsukamoto, M., “In-situ
modification of thermal, microstructural, and mechanical responses by altering scan lengths in laser powder
bed fusion additive manufacturing of Ti-6Al-4V”, Opt. Laser Technol., 164(2023), 109525.
O. C. Ozaner, A. Kapil, Y. Sato, Y. Hayashi, K. Ikeda, T. Suga, M. Tsukamoto, S. Karabulut, M. Bilgin and A.
Sharma., “Dry and Minimum Quantity Lubrication Machining of Additively Manufactured IN718 Produced via
Laser Metal Deposition”, Lubricants, 11(12) (2023), 523.
K. Yamamoto, R. Matsuda, K. Takenaka, Y. Sato, Y. Yamashita, A. Saikai, T. Yachi, M. Kusaba, M. Tsukamoto,“Experimental evaluation of a WC–Co alloy layer formation process by multibeam-type laser metal deposition
with blue diode lasers”, J. Laser Appl., 36(1) (2023), 012010.

14

Joint Interface Microstructure Characterization Room
Research summary
In order to clarify the effect of material structure on the properties of joints joined by various methods
and new materials made by applying joining technology, their microstructures are examined using atransmission electron microscope (TEM). TEM observation provides various information such as the
crystal structure, chemical composition, properties and distribution of lattice defects in minute areas.
We also support the preparation of specimens for TEM observation from difficult-to-process joint
structures, etc., using various means such as focused ion beam (FIB) processing. In addition to TEM
sample preparation, we develop methods for micromechanical testing of materials using FIB processing
and apply them to strength evaluation of joint structures.
As a unique activity of the analysis room, we perform basic study on the bonding mechanism ofanodic bonding, which is a method of bonding glass to conductors at relatively low temperatures, anddevelop new bonding methods and high-function bonding interfaces by applying that knowledges.

Research subjects(1) Microstructural analysis of various bonding interfaces and material structures(2) Fundamental research on the anodic bonding process of glass to various metals(3) High functionalize of glass-to-glassanodic bonding interfaces(4) Development of new bonding methods that applies the principle of anodic bonding

Reaction products that grew at joint interfaces between
titanium and optical glasses. The bright-ﬁ eld image of BK7crown glass/titanium joint interface by transmission electron
microscopy (a), Selected Area electron Diﬀ raction (SAD)
pattern taken from the area indicated by a circle in the imagea (b), bright-field image of FD110 dense flint glass/titanium
joint interface (c), and SAD pattern taken from the area
indicated by a circle in the image c (d). These reaction products
were found to consist of α-TiO2 . However, those forms arestrongly aﬀ ected by types of glass.

Distribution of retained austenite in 980 MPa
high-tensile steel. (a) Bright-field image, (b)dark-field image taken by 111 reflection fromaustenite indicated in the diﬀ raction pattern in(c), and (c)-(e) selected-area electron diﬀ raction
patterns taken from positions indicated in thebright -ﬁ eld image in (a). Austenite appears
bright between ferrite laths in the dark-ﬁ eld
image.

Major Papers
Makoto Takahashi, “Dissimilar glass-to-glass bonding by Low-temperature Anodic Bonding” (In Japanese),
29th Symposium on Microjoining and Assembly Technology in Electronics, held on 24-25 January in Yokohama,Japan.

15

Global Diversity and Inclusion Promotion Office
Summary
Global D&I (Diversity & Inclusion) Promotion Office promotes the development of an environmentthat maximizes the strengths of Joining and Welding Research Institute (JWRI) and all members bytruly embracing diversity and respecting the individuality of each person, regardless of gender,
nationality, age, cultural background, etc., in order to achieve the SDGs, which aim to realize asociety where "no one is left behind”. In response to the trend toward internationalization inacademic research, JWRI will develop international joint industry-academia research based on theinternational network we have established to date. JWRI aims to develop competent humanresources to face global challenges, to strive to stimulate innovation in joining science as the worldleading research in the field of welding and joining, and to realize the institute where diverse humanresources can play an active role.
In FY 2023, major activity that Global D&I Promotion Office has worked on was the preparationfor operation of “Joining and Welding Research Institute HUST-OU” established in January 2023 in
Hanoi, Vietnam under collaboration with Hanoi University of Science and Technology, as well as
strengthening the collaboration ties with industries and oversea universities. It is expected those
expanded collaborations will broaden the diversity of the JWRI through active international joint
research and through exchange of the researchers and students in Southeast Asia and wider regions.
Another activity was focused on diversifying human resources with regards to gender and global
perspective in order to enhance outcomes for further diversity and inclusion within JWRI.

Activities(1) Increase Global Diversification: Strengthen International Collaboration Research; Operation of“Joining and Welding Research Institute HUST-OU”; Create and activate foundation ofInternational Industry-Academia Collaboration; Increase number and quality of Welding
Engineers in Vietnam and in Southeast Asia; Strengthening research collaborations with oversea
institutes through various schemes; Foster friendly work environment at JWRI.
(2) Increase Gender Diversification: Bring together students, faculty and staff from different roles
and positions; Lecture at the role model series in Nagaoka University of Technology.
Table.1. List of activities and projects for Global Diversification (Extracted)
Name
Contents
Preparation for operation of
Preparation for procurement of research equipment for HUST-OU established“Joining and Welding Research
on January 10th, 2023
Institute HUST-OU” (HUST-OU)
Tow Seminars were held:
Vietnam Welding Research
1) June 26th, 2023 in Hanoi, Vietnam (Hybrid)
Club2) November 24th, 2023 in Ho Chi Minh City (Vung Tau), Vietnam
New Industry-Academia
Concluded on November 13th, 2023: Yamamoto Metal Techno; Yamamoto Metal
Collaboration
Precision Vietnam; HUST; JWRI.
Japan International Cooperation
Strengthening training and education capacity on Welding Engineers at HUSTAgency (JICA) Partnership(preparing for kick-off)
ProgramInvited 5 students and researchers between Nov.22-Dec.13, 2023: FromJST Sakura Science Exchange
Malaya University; Indian Institute of Technology Hyderabad; and Vietnam
ProgramAcademy of Science and Technology.

Vietnam Welding Research Club: Factory Visit

International Researchers Orientation

16

New Normal Manufacturing Consortium Office
Research summary
New Normal Manufacturing Consortium Office deals with not only basic researches forgenerating advanced materials but also developments & educations of their applied technologies
in order to establish Material Innovation Strategy. As for the creation of advanced materials, newhigh-functional (environmentally) adaptive materials is developed by using the advanced
processing technologies. In addition, in order to achieve “Carbon Neural 2050”, optimum
structural design is studied through the appropriate selection of multi-materials and joining
technologies with the aid of Artificial Intelligence computational science.

Research subjects(1) Development of advanced dissimilar materials joint technology by using high brightness laser
beams(2) Computational analysis of friction stir processes by using coupled method between particle
method and finite element method(3) Numerical analysis of arc welding processes by using three-dimensional, non-stationary thermalmodel(4) Creation of advanced joining technologies for innovative fusion reactor power generation
system(5) Development of dissimilar materials joint performance data-base based on artificial intelligencecomputational science
Tool

SiC/SiC composite - Zircaloy tubes joint Coupled method of particle method &FEM
Model for MPS

Dissimilar joint between reduced
activation
steel
and
austenitic
stainless steel
インサート材(Transverse to Joining Line)
SUS316L

Cu cladding on tungsten plate

WM

HAZ F82H(Parallel to Joining Line)

Transient Phenomena

Temperature Distributions

Copper powder
container

FEM（有限要素法）

MPS（粒子法）

Numerical analysis of arc welding
processes

Multi-material joint performance data-base based on artificial intelligencecomputational science
Appropriate Selection
Structures

Design for Multi-Material Structures

Grain Size
Crystal Orientation
Size of HAZ
Size of Penetration
・・・

Appropriate selection of multi-materials for each elements

Processing
Welding Currnet
Welding Voltage
Welding Speed
Shielding Gas
・・・

Welding & Bonding Technologies
Appropriate selection of welding & bonding processes (performances, productivities, ...)
Similar Joint

Resistance Welding

Friction Stir Welding

Prospective Theory based on AI

of Multi-Materials & Joining Technologies
Performances
Tensile Strength
Bending Strength
Fatigue Properties
Corrosion Properties
・・・

Optimum Structure Design
based on Mathematical Programming

Stress & Deformation
Residual Stress
Welding Distortion
Stress Distribution
Mechanical Constraints
・・・

Dissimilar Joint

Laser Assistant Welding

Joint Properties &Joining Technologies DB

Adhesive Bonding

Major Papers
H. Serizawa, K. Inose, R. Ohashi, Y. Sugimoto, T. Minoda and T. Murakami, “Study on Tensile Shear Strength of
Dissimilar Lap Joints for Multi-Material Structures”, Quarterly J. Japan Welding Soc., 41, 1 (2023), 124-132.
H. Serizawa, K. Inose, R. Ohashi, Y. Sugimoto, T. Minoda and T. Murakami, “Study on Shear Fatigue Properties
of Dissimilar Lap Joints for Multi-Material Structures”, Quarterly J. Japan Welding Soc., 41, 1 (2023), 133-140.
H.Serizawa, “Evaluation on Joint Performances of Advanced Multi-Material Dissimilar Lap Joints”, KeyEnginering Materials, 966 (2023), 83-90.

17Osaka Fuji "Advanced Functional Processing" Joint Research Chair
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. Kurita, T. Arita, M. Mizutani, Y. Sato, H. Nakano, M. Tsukamoto, "Observation of welding behavior for
elucidation of spatter suppression mechanism in laser welding using a 16 kW disk laser", Proceeding of
SPIE,12408, Laser Appl. Microelectron & Optoelectron Manuf. (LAMOM), XXVIII.
(2023),12408L-1-12408L-5
Y. Sato, M. Sudo, S. Fujio, K. Takenaka, M. Mizutani, M. Tsukamoto, "Experimental study on pure copper welding
with the 1.5kW blue diode laser for realization of a carbon-neutral society", Proceeding of SPIE, 12403,HighPower Diode Laser Technology XXI,(2023),124030Q-1-124030Q-5.
R. Higashino, Y. Sato, K. Takenaka, N. Abe, M. Tsukamoto, “Cu-Zn alloy coating with multi-beam laser metal
deposition using blue diode lasers”, SPIE. Photonics West 2023, The Moscone Center, San Francisco, California,
United States (2023),12412-12440.

18

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

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

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

Research topics(1) Synthesis and integration of
nanomaterials towards environmental
and energy applications(2) Synthesis and coating of titan
nanocrystals
towards
biomedical
applications

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

社会の出島
アドバイザリーボード（産官学からの委員）

社会的要求（ニーズ）を起点とする新規研究課題

東医歯大生材研

東北大金研

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

医療マテリアル臨床

多様機能金属材
料設計・開発国際共共拠点共同研究員

出島

運営評価委員会（産官学からの委員）

共共拠点
共同研究員

マルチ出島を通じた

人と知の循環出島

設備の共同利用
共共拠点
共同研究員

共共拠点
共同研究員

阪大接合研 課題解決
マテリアル・
システム融合

出島

コア出島
課題設計
（６研URA)

名大未来研
出島 グリーンマテリアル
人材育成

知のネットワーククロス

出島 アポイントメント 出島

・自由に出島間を渡航・研究者道場プラットフォーム

東工大フロ研

早大ナノライフ

多様機能無機材料設計・開発

構造材料設計エレクトロニクス融合

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

Cooperation system of the six research institutes at six universities

Major Papers
M. Milošević, M. Radoičić, S. Ohara, H. Abe, J. Spasojević, L. Mančić, Z. Šaponjić, “Advanced
photocatalytic mediated by TiO2/Ag/TiO2 nanoparticles modified cotton fabric”, Cellulose, 30,(2023), 4749-4771.

19

CONTRIBUTIONS TO OTHER ORGANIZATIONS(January 2023 ~ December 2023)[Physics, Processes, Instruments & Measurements]
Y. ABE, T. FUJIMOTO, M. NAKATANI, M. SHIGETA and
M. TANAKA
Development of Ultra-Narrow Gap Submerged
Arc Welding
J. Japan Welding Soc., 92, 2 (2023), 105-110 (inJapanese).
M. TANAKA
Arcs and TIG Welding
J. Japan Welding Soc., 92, 3 (2023), 174-187 (inJapanese).
M. TANAKA
Introduction to Welding Technology
Textbook for HPI Technology Seminar, (2023),
179-220 (in Japanese).
M. TANAKA
Introduction to Welding Process
Textbook for Summer School of Welding
Engineering, (2023), 1-28 (in Japanese).
S. FUJIYAMA, H. KOMEN and M. TANAKA
Dependency of Arc Efficiency on Welding Current
in Gas Metal Arc Welding
Welding letters, 40, 4 (2023), 9WL-12WL.
K. IIDA, H. KOMEN, M. SHIGETA and M. TANAKA
Identification of the Dominant Factor for Droplet
Ejection from the Tungsten Electrode during AC
Tungsten Inert Gas Welding by Visualisation ofElectrode Phenomena
Materials, 16, 7 (2023), 2899.
Y. ASAI, H. KOMEN, M. TANAKA, M. NOMOTO,
K. WATANABE and T. KAMO
Investigation for Oxygen Transfer Mechanism
During Gas Tungsten Arc Welding with Carbon
Dioxide Gas
Q. J. Jpn. Weld. Soc., 41, 2 (2023), 45s-48s.
K. AOYAMA, S. SHOBAKO, T. YAMASHITA, T. SOUMA,S. SHIMASAKI, N. TERAJIMA, H. KOMEN and M. TANAKA
Measurement of Electron Density Distribution
During AC-GTA Welding in Mars-like Atmosphereby IR Method
Q. J. Jpn. Weld. Soc., 41, 2 (2023), 49s-52s.

20

Y. OGINO, K. NOMURA, H. KOMEN, H. KITANO and
M. TANAKA
Recent Progresses and Future Prospects of
Science and Technology in Welding Process
J. Japan Welding Soc., 92, 5 (2023), 309-319 (inJapanese).
K. IIDA, H. KOMEN, M. SHIGETA and M. TANAKA
Splashing of Tungsten-Based Anode during Arc
Discharge
Sci. Rep., 13, 1 (2023), 12210.
X. WANG, J. ZHANG, Y. DENG, D. CHEN, N.-Q. TRINH,
S. TASHIRO and M. TANAKA
Numerical Investigation of the Arc Properties in
Gas Tungsten Arc–based Additive Manufacturing
Weld. World, 67 (2023), 945-954.
D. WU, J. SUN, Z. LI, S. TASHIRO, A.-B. MURPHY, N. MA,
M. TANAKA, J. HUANG, K. FENG, C. LIU and W. JIAO
Dynamic Vapor and Keyhole Behavior, andEquiaxed Dendrite Formation in Blue Laser
Processing of Copper
Int. J. Heat Mass Transf., 209 (2023),
124102(10pp).
H.-V. BUI, N.-Q. TRINH, S. TASHIRO, T. SUGA, T. KAKIZAKI,K. YAMAZAKI, A. LERSVANICHKOOL, A.-B. MURPHY and
M. TANAKA
Individual Effects of Alkali Element and Wire
Structure on Metal Transfer Process in Argon
Metal-Cored Arc Welding
Materials, 16 (2023), 3053.
W. ZHAO, S. TASHIRO, A.-B. MURPHY, M. TANAKA, X. LIU
and Y. WEI
DeepeningtheUnderstandingofArc
Characteristics
and
Metal
Properties
in
GMAW-based WAAM with Wire Retraction via aMulti-Physics Model
J. Manufacturing Processes, 97 (2023), 260-274.

W. ZHAO, Y. WEI, S. TASHIRO, M. TANAKA and
A.-B. MURPHY
Numerical
InvestigationsofArc
PlasmaCharacteristic Parameters Evolution and Metal
Properties in GMAW-based WAAM of Al Alloywith an Integrated Model
J. Manufacturing Processes, 99 (2023), 321-337.

K. TAKENAKA, A. JINDA, S. NAKAMOTO, S. TOKO, G. UCHIDA
and Y. SETSUHARA
Direct Bonding of Stainless Steel and PEEK Using
Non-thermal
AtmosphericPressure
Plasma-assisted Joining Technology
J. Manufacturing Processes, 105 (2023), 276-281.
S. TOKO, T. HASEAGAWA, T. OKUMURA, K. KAMATAKI,
K. TAKENAKA, K. KOGA, M. SHIRATANI and Y. SETSUHARA
Optical Emission Spectroscopy Study in CO2
Methanation with Plasma
Jpn. J. Appl. Phys., 62 (2023), SI1008.

X. WANG, S. TASHIRO, M. TANAKA and A.-B. MURPHY
Numerical Investigation of the Iron and Oxygen
Transport in Arc Plasma During an ActivatedTungsten Inert Gas Welding Process
Plasma Chem. Plasma Process., (2023).

S. TOKO, T. HASEAGAWA, T. OKUMURA, K. KAMATAKI,
K. TAKENAKA, K. KOGA, M. SHIRATANI and Y. SETSUHARA
Contribution of Active Species Generated in
Plasma to CO2 Methanation
Jpn. J. Appl. Phys., 62 (2023), SL1023.

X. WANG, S. TASHIRO, M. TANAKA and N.-Q. TRINH
Numerical Investigation of the Arc Behaviour and
Air Transport during Pulsed Tungsten Inert Gas
Arc-Based Additive Manufacturing
Int. J. Adv. Manuf. Technol., 128 (2023),
5385-5403.

T. HASEGAWA, S. TOKO, K. KAMATAKI, K. KOGA and
M. SHIRATANI
Improving the Efficiency of Sabatier Reaction
through H2O Removal with Low-Pressure Plasma
Catalysis
Jpn. J. Appl. Phys., 62 (2023), SL1028.

F. JIANG, X. GAO, B. XU, G. ZHANG, C. FAN, S. TASHIRO,
M. TANAKA and S. CHEN
Numerical Analysis of Arc Physics and Energy
Transfer under Circumferential Gas Constraint
EffectInt. J. Heat Mass Transf., 221 (2023), 125082.

S. HOMMA, D. OKADA, A. SAWANOBORI, S. YAMAMOTO,
T. IMOTO and H. NISHIKAWA
Interfacial Behavior Between Mold Resin andSputtered Film Deposited on Electromagnetic
Shield Packages
J. Smart Process., 12, 5 (2023), 291-298 (inJapanese).

K. TAKENAKA, T. YOSHITANI, M. ENDO, H. HIRAYAMA, S.
TOKO, G. UCHIDA, A. EBE and Y. SETSUHARA
Plasma Processing Technique by Combination of
Plasma-Assisted Reactive Sputtering and Plasma
Annealing for Uniform Electrical Characteristics of
InGaZnO Thin Film Transistors Formed onLarge-Area Substrates
Jpn. J. Appl. Phys., 62 (2023), SI1005/1-SI1005/9.

X. LIU, H. TATSUMI, Z. JIN and H. NISHIKAWA
Failure Analysis of Joints Bonded by Ag-In
Transient Liquid Phase Process during Shear Test
Proc. 2023 Int. Conf. on Electronics Packaging(ICEP2023), (2023).

K. TAKENAKA, M. ENDO, H. HIRAYAMA, S. TOKO, G. UCHIDA,
A. EBE and Y. SETSUHARA
Analysis of Residual Oxygen during A-IGZO Thin
Film Formation by Plasma-Assisted Reactive
Sputtering Using a Stable Isotope
Vacuum, 215 (2023), 112227/1-112227/6.

S. PAK, H. TATSUMI, J. WANG and H. NISHIKAWA
Interfacial Intermetallic Compounds of Bi2Te3/Cu
Joint Using SAC305 Solder and Nano-Ag Paste
Proc. 2023 Int. Conf. on Electronics Packaging(ICEP2023), (2023).

K. TAKENAKA, H. HIRAYAMA, M. ENDO, S. TOKO, G. UCHIDA,
A. EBE and Y. SETSUHARA
Analysis of Oxygen-Based Species Introduced
during Plasma Assisted Reactive Processing of
A-IGZO Films
Jpn. J. Appl. Phys., 62 (2023), SL1018/1-SL1018/5.

21

J. WANG, S. YODO, H. TATSUMI and H. NISHIKAWA
Microstructure and Property of Ag Sintered Joint
Doping with AlN Nanoparticles
Proc. 2023 Int. Conf. on Electronics Packaging(ICEP2023), (2023).

K. KAWASAKI, H. YAMADA, H. NAGATOMO, Y. HIRONAKA,
K. YAMANOI, D. TANAKA, T. IDESAKA, Y. MOKUNO,
A. CHAYAHARA, T. SHIMAOKA, K. MIMA, T. SOMEKAWA,
M. TSUKAMOTO, Y. SATO, A. IWAMOTO and K. SHIGEMORI
Fabrication of Nanocrystalline Diamond Capsulesby Hot-Filament Chemical Vapor Deposition for
Direct-Drive
Inertial
Confinement
FusionExperiments, Diamond and Related Materials
Diamond and Related Materials, 135 (2023),
109896.

S. OYA, H. TATSUMI and H. NISHIKAWA
Significant Consumption of Ni-P Layer in
Ni-P/Sn-0.7Cu
SolderJointsduring
Thermomigration
Proc. 2023 Int. Conf. on Electronics Packaging(ICEP2023), (2023).

Y. TAKAZAWA, Y. SATO, K. TAKENAKA, Y. YAMASHITA,
T. KUNIMINE and M. TSUKAMOTOHigh Speed Coating for Pure Copper by
Multi-Beam Laser Metal Deposition Method withHigh Intensity Blue Diode Lasers
J. Laser Appl., 35 (2023), 12029.

Z. JIN, F. HUO, D.-L. HAN, X. LIU, H. TATSUMI, Y.-C. CHAN
and H. NISHIKAWA
The Electromigration Study of Thin-Film
Structured Sn3.5Ag and Ag Using Continuous
Observation
andReliability
Enhancement
ApproachThin Solid Films, 774, 7 (2023), 139827.

Y. SATO, M. SUDO, S. FUJIO, K. TAKENAKA, M. MIZUTANIand M. TSUKAMOTO
Experimental Study on Pure Copper Welding withthe 1.5kW Blue Diode Laser for Realization of aCarbonneutral Society
Proc. SPIE, 12403, High-Power Diode Laser Tech.
XXI, (2023), 124030Q-1-124030Q-5.

J. LI, H. TATSUMI and H. NISHIKAWA
Comparative Study of Sn-based Solder Wettability
on Aluminum Substrate
Q. J. Jpn. Weld. Soc., 41 (2023), 26a.
Y. KIDA, H. TATSUMI, K. TAKENAKA, Y. SATO,
M. TSUKAMOTO and H. NISHIKAWA
Rapid Soldering Process of Pure Copper Ribbon
Using Blue Laser
Proceedings of 33rd Microelectron. Sympo.
(MES2023), (2023), 291-294.

Y. SATO, M. SUDO, S. FUJIO, K. TAKENAKA, M. MIZUTANIand M. TSUKAMOTO
Experimental Study on Pure Copper Welding withthe 1.5kW Blue Diode Laser for Realization of aCarbonneutral Society
Proc. SPIE, 12403, High-Power Diode Laser Tech.
XXI, (2023), 124030Q-1-124030Q-5.

H. TATSUMI, C.-R. KAO and H. NISHIKAWA
Impact of Crystalline Orientation on Cu-Cu
Solid-State Bonding Behavior by Molecular
Dynamics Simulations
Sci. Rep., 13 (2023), 23030.

Y. KURITA, T. ARITA, M. MIZUTANI, Y. SATO, H. NAKANO
and M. TSUKAMOTO
Observation of Welding Behavior for Elucidationof Spatter Suppression Mechanism in Laser
Welding Using a 16 kW Disk Laser
Proc. SPIE, 12408, Laser Applications in
Microelectronic and Optoelectronic Manufac.
(LAMOM) XXVIII (2023), 12408L-1-12408L-5.

M. TSUKAMOTO
Materials Processing with Visible-Light Laser for
the Realization of a Carbon-Neutral Society
J. Smart Proc. Mater., 12, 2 (2023), 53 (inJapanese).

R. HIGASHINO, Y. SATO, K. TAKENAKA, N. ABE and
M. TSUKAMOTO
Cu-Zn Alloy Coating with Multi-Beam Laser Metal
Deposition Using Blue Diode Lasers
Proc. SPIE, 12412, Laser 3D Manufac. X (2023),
124120B-1-124120B-6.

22

Y. KURITA, T. ARITA, M. MIZUTANI, Y. SATO, H. NAKANO
and M. TSUKAMOTO
Observation of Welding Behavior for Elucidationof Spatter Suppression Mechanism in Laser
Welding Using a 16 kW Disk Laser
Proc. SPIE, 12408, Laser Applications in
Microelectronic and Optoelectronic Manufac.
(LAMOM) XXVIII (2023), 12408L-1-12408L-5.

Y. YAMASHITA, Y. FUNADA, H. UBATA, T. KUNIMINE, Y. SATO
and M. TSUKAMOTO
Derivation of Compositions in Compositionally
Graded Cemented Carbide Layers Processed by
Laser Additive Manufacturing for Suppressing
Crack Generation by Bayesian Optimization
J Jpn Laser Proc. Soc., 30, 2 (2023), 151-156.
Y. KURITA, Y. SATO, S. FUJIO, M. MIZUTANI and
M. TSUKAMOTO
Influence of the Laser-Induced Plume on Welding
Behavior in Keyhole Welding for Stainless SteelUsing a 16kW Disk Laser
J. Laser Appl., 35, 4 (2023), 42033.

Y. YAMASHITA, M. NAKAMURA, M. SAKAI, T. KUNIMINE,
Y. SATO, Y. FUNADA and M. TSUKAMOTO
In Situ Evaluation of Crack Generation Using
Acoustic Emission Technique during Laser
Cladding of WC-Co Cemented Carbide via
Multi-Beam Laser Metal Deposition
Mater. Sci. Forum, 1083 (2023), 153-158.

O.-C. OZANER, A. KAPIL, Y. SATO, Y. HAYASHI, K. IKEDA,
T. SUGA, M. TSUKAMOTO, S. KARABULUT, M. BILGIN and
A. SHARMA
Dry and Minimum Quantity Lubrication Machiningof Additively Manufactured IN718 Produced via
Laser Metal Deposition
Lubricants, 11, 12 (2023), 523.

P. PROMOPPATUM, B. CHAYASOMBAT, A.-N. SOE,
A. SOMBATMAI, Y. SATO, T. SUGA and M. TSUKAMOTO
In-situ Modification of Thermal, Microstructural,and Mechanical Responses by Altering Scan
Lengths in Laser Powder Bed Fusion Additive
Manufacturing of Ti-6Al-4V
Opt. Laser Technol., 164 (2023), 109525.

K. YAMAMOTO, K. TAKENAKA, Y. SATO, M. HASHIDA,
H. SAKAGAMI, S. IWAMORI and M. TSUKAMOTO
Effect of Polarization Angle on Laserinduced
Periodic Surface Structures by a Two-Color
Double-Pulse Femtosecond Beam Irradiation
Proc. SPIE, 12408, Laser Appl. in Microelectronic
and Optoelectronic Manuf. (LAMOM) XXVIII(2023), 12408K-1-12408K-3.

S. KATO, S. ONO, A. SUNAHARA, Y. SATO and
M. TSUKAMOTO
Optical Properties of Liquid Pure Copper by
Density Functional Theory
Journal of Physics: Condensed Matter, 35, 32(2023), 324004.
K. MAEDA, Y. SATO, R. SUZUKI, T. SUGA and
M. TSUKAMOTO
Influences of Cold-Sprayed Steel Interlayer on
Mechanical Properties of Laser Welded Steel/Al
Lap Joints
J. Mater. Process. Technol., 320 (2023), 118103.

K. YAMAMOTO, K. TAKENAKA, Y. SATO, M. HASHIDA,
H. SAKAGAMI, S. IWAMORI and M. TSUKAMOTO
Effect of Polarization Angle on Laserinduced
Periodic Surface Structures by a Two-Color
Double-Pulse Femtosecond Beam Irradiation
Proc. SPIE, 12408, Laser Appl. in Microelectronic
and Optoelectronic Manuf. (LAMOM) XXVIII(2023), 12408K-1-12408K-3.

K. MAEDA, Y. SATO, R. SUZUKI, T. SUGA and M. TSUKAMOTO
Influences of Cold-Sprayed Steel Interlayer on
Mechanical Properties of Laser Welded Steel/Al
Lap Joints
J. Mater. Process. Technol., 320 (2023), 118103.

K. TAKENAKA, Y. SATO, S. FUJIO and M. TSUKAMOTO
Comparison of Melting Efficiency between Blue,
Green, and IR Lasers in Pure Copper Welding
J. Laser Appl., 35 (2023), 42012.

23

K. YAMAMOTO, R. MATSUDA, K. TAKENAKA, Y. SATO,
Y. YAMASHITA, A. SAIKAI, T. YACHI, M. KUSABA and
M. TSUKAMOTO
Experimental Evaluation of a WC-Co Alloy Layer
Formation Process by Multibeam-Type Laser
Metal Deposition with Blue Diode Lasers
J. Laser Appl., 36, 1 (2023), 12010.

G. FAN, Q. LIU, A. KONDO, M. NAITO, K. KUSHIMOTO,
J. KANO, Z. TAN and Z. LI
Self-assembly of Nanoparticles and Flake Powders
by Flake Design Strategy via Dry Particle Coating,Powder Technology
Powder Technol., 418, 15 (2023), 118294.
M.-Z. JAMIL, M.-Z.-M. ISA, S. RAJA, M.-R. MUHAMAD,
F. YUSOF, H. HASNAN, M. JAMALUDIN, Z. BRYTAN, H. LIU,
T. SUGA, Y. MORISADA and H. FUJIIFriction Stir Alloying AZ61 Magnesium Alloy and
Mild Steel with Zn-CNT Additive
Trans. Indian Inst. Met., (2023).

H. MIAO, S. TSUTUMI, T. YAMASHITA, Y. MORISADA and
H. FUJII
Fatigue Strength Improvement of Linear Friction
Welded Butt Joints of Low Carbon Steel by
Pressurizing after Oscillation
J. Manufacturing Processes, 102 (2023),
795-805.

[Materials, Metallurgy & Weldability]
F. KAWASHIRO, M. YOSHIKAWA, E. MIYAKE, Y. ENDO,
T. TONEDACHI and H. NISHIKAWA
Effect of Aluminum Clad Cu Wire Bonds on Power
Cycle Lifetime for High Current Density Power
Module Packages
J. Smart Process., 11, 2 (2023), 71-77 (inJapanese).

W. ZHENG, D. ZHANGA, D. WU, N. MA and P. GENG
Effects of Ceramic Material in Laser-Directed
EnergyDeposition
ofTitaniumceramic
Functionally Graded Materials
J. Mater. Process. Technol., 317 (2023),
117992-118000.
Y. ZHANG, D. WU, D. XIE, H. WU, C. LIN, Q. ZHANG, J. KE,
G. TAN, N. MA and Y. GUO
Novel Hybrid Laser Forging and Arc Additive
Repairing Process for Improving Component
Performances
Int. J. Heat Mass Transf., 212 (2023),
124289-124299.

S. LIN, C. YANG, Y. LIU, Y. HIRATA and H. NISHIKAWA
How to Enhance Sn-Bi Low-temperature Solder by
Alloying
Proc. 2023 Int. Conf. on Electronics Packaging(ICEP2023), (2023).

T. KOZAWA, K. FUKUYAMA, A. KONDO and M. NAITO
Mechanochemical Synthesis of Shape-Anisotropic
Particles through Wet Milling Using High-Energy
Mills
J. Jpn. Soc. Powder Powder Metal., 70 (2023),
100-105 (in Japanese).

S. HOMMA, D. OKADA, A. SAWANOBORI,
S. YAMAMOTO, T. IMOTO and H. NISHIKAWA
Effect of Etching Gas on Adhesion between Mold
Resin and Sputtered Stainless Steel Ground Films
in Electromagnetic Shield Packages
Proc. 2023 Int. Conf. on Electronics Packaging(ICEP2023), (2023).

G. UCHIDA, K. MASUMOTO, M. SAKAKIBARA, Y. IKEBE,
S. ONO, K. KOGA and T. KOZAWA
Single-step
FabricationofFibrous
Si/Sn
Composite Nanowire Anodes by High-Pressure He
Plasma Sputtering for High-Capacity Li-ion
Batteries
Sci. Rep., 13 (2023), 14280.

Y. LIU, C. CHEN, M. UESHIMA, T. SAKAMOTO,
T. NAOE, H. NISHIKAWA and K. SUGANUMA
A Novel and Cost-Effective Ag/Si Composited
Paste With Highly Stable Microstructure
Maintaince in Thermal Shock Cycles
Proc. 2023 Int. Conf. on Electronics Packaging(ICEP2023), (2023).

A. KONDO, T. ISHII, T. KOZAWA and M. NAITO
Mechanical Synthesis of Lithium Titanate Hydrate
in Liquid Phase Using a High Centrifugal Bead Mill
Journal of the Society of Powder Technology, 60,
9 (2023), 536-541 (in Japanese).

24

Z. JIN, S. FUJIWARA, J. TAKENAKA, K. HAGIO and
H. NISHIKAWA
Impact Strength of Sn58Bi and Sn45Bi2.6Zn0.5In
Solder Joints after Isothermal Aging
Proc. 2023 Int. Conf. on Electronics Packaging(ICEP2023), (2023).

S. NITTA, H. TATSUMI and H. NISHIKAWA
Effect of Nanoparticles Surface on Dispersibility in
Sn-In/ZrO2 Composite Solder
Proceedings of 33rd Microelectron. Sympo.
(MES2023), (2023), 355-358.
P. ZHANG, S. XUE, L. LIU, J. WANG, H. TATSUMI and
H. NISHIKAWA
Influence of Isothermal Aging on Microstructureand Shear Property of Novel Epoxy Composite
SAC305 Solder Joints
Polymers, 15 (2023), 4168.

H. NISHIKAWA, B. PARK, M. SAITO and J. MIZUNO
Effect of Surface Microstructure on Joints Using
Nanoporous Cu Sheet for Power Devices
Proc. 24th European Microelectronics Packaging
Conf. (EMPC2023), (2023).

S. NITTA, H. TATSUMI and H. NISHIKAWA
Strength-enhanced Sn-In Low-Temperature Alloywith Surface-Modified ZrO2 Nanoparticle Addition
J. Mater. Sci. -Mater. Electron., 34 (2023), 2066.

X. LIU, Z. JIN, H. TATSUMI and H. NISHIKAWA
Mechanical Properties of Transient Liquid Phase
Bonded Joints by Using Ag-In Sandwich Structure
Proc. 2022 IEEE 24th Electronics Packaging
Technology Conf. (EPTC), (2023), 71-75.

X. LIU, H. TATSUMI, Z. JIN, Z. CHEN and H. NISHIKAWA
Thermomechanical Properties of Zeta (Ag3In)
Phase
Materials, 16 (2023), 7115.

H. TATSUMI, C.-R. KAO and H. NISHIKAWA
Molecular Dynamics Simulation of Cu-Cu
Solid-State Bonding under Various Bonding
Parameters
Proc. 2023 Int. Conf. on Electronics Packaging(ICEP2023), (2023).

H. NAKAWAKI, H. TATSUMI, S. NITTA, C. YANG, S. LIN and
H. NISHIKAWA
Effect of Bi Content on the Microstructure andMechanical Properties of Sn-Bi-Zn-In Alloy
Q. J. Jpn. Weld. Soc., 41, 4 (2023), 348(in Japanese).

H. NAKAWAKI, H. TATSUMI, C. YANG, S. LIN and
H. NISHIKAWA
The Influence of Bi Content on Joint Properties
Using Sn-Bi-Zn-In Alloy
Proc. 2023 Int. Conf. on Electronics Packaging(ICEP2023), (2023).

H.-H. ZARGARI, K. ITO and A. SHARMA
Effect of Workpiece Vibration Frequency on HeatDistribution and Material Flow in the Molten Poolin Tandem-Pulsed Gas Metal Arc Welding
Int. J. Adv. Manuf. Technol., 129 (2023),
2507-2522.

J. WANG, S. YODO, H. TATSUMI and H. NISHIKAWA
Reliability-enhanced Microscale Ag Sintered Joint
Doped with AlN Nanoparticles
Mater. Lett., 349 (2023), 134845.

M. TAKAHASHI
Low-temperature Anodic Bonding
29th Symp. on "Microjoining and AssemblyTechnology in Electronics", (2023), 221-226 (inJapanese).

J. WANG, S. YODO, H. TATSUMI and H. NISHIKAWA
ThermalConductivity
andReliability
Reinforcement for Sintered Microscale Ag Particle
with AlN Nanoparticles Additive
Mater. Charact., 203 (2023), 113150.

H. YAMAMOTO, Y. YANAGI, K. ITO, H. KOMEN, M. TANAKA
and A. MURATA
Strengthening of Al/Cu Dissimilar Joint Due toComplicated Interface Produced by Pulsed TIG
Welding with a Constricted Nozzle
Q. J. Jpn. Weld. Soc., 41, 1 (2023), 168-177 (inJapanese).

X. LIU, H. TATSUMI, Z. JIN, Z. CHEN and H. NISHIKAWA
Fabrication and Thermo-Mechanical Properties of
Ag9In4 Intermetallic Compound
Intermetallics, 162 (2023), 108028.

25

H. YAMAMOTO, Y. YAMAMOTO, K. ITO and Y. MIKAMI
Adapted to Generate Compressive Residual Stressand Retained Austenite in a Steel Surface Layer by
Friction Stir Processing with the WC Tool
IIW-XI-L, Annual Assembly 2023, (2023), E2.

Z. WU, K. USHIODA and H. FUJII
Mechanism of Suppressing HAZ Softening in
Friction Stir Welded Martensitic Steel throughHardening Phenomenon Initiated by Adding
Vanadium
J. Mater. Res. Technol-JMRT, 26 (2023),
1151-1167.

H. MANIWA, M. ABE, M. SUZUKI, Y. KITAGAWA,
Y. HOSHINO, R. ODA, H. YAMAMOTO, S. M. HONG
and K. ITO
Low-temperature
Toughness
Increasefor
Austenitic Stainless Steel Weld Metal for
Cryogenic Use
IIW-II-A, Annual Assembly 2023, (2023), E2.

J. CHOI, J. SU, R. HINO, M. YAMAMOTO, Y. AOKI and
H. FUJII
High-pressure Linear Friction Welding of
Dissimilar AA5052-H34 and AA6061-T6 Joint
J. Mater. Res. Technol-JMRT, 26 (2023),
4483-4494.

H. YAMAMOTO, Y. YANAGI, K. ITO, H. KOMEN,
M. TANAKA and A. MURATA
Strengthening of Al/Cu Dissimilar Joint Due toComplicated Interface Produced by Pulsed TIG
Welding with a Constricted Nozzle
Weld. Int., 37, 12 (2023), 718-729.

J. PARK, H. JUNG, W. JEONG, S. SHIN, H. FUJII, H. KIM and
S. LEE
Microstructure, Mechanical Properties, and Wear
Properties of Friction-Stir Processed S45C SteelInt. J. Plast., 186 (2023).
A. SHARMA, Y. MORISADA and H. FUJIIInterfacial Microstructure and Strengthening
Mechanisms of SPSed Al/GNP Nanocomposite
Subjected to Multi-Pass Friction Stir Processing
Mater. Charact., 197 (2023), 112652.

Y. LEE, W. JEONG, S. LEE, H. FUJII, S. E. SHIN and D. LEE
Effect of Welding Conditions on Microstructural
Evolution of Friction-Stir-Welded Ti-Cu Plate
Arch. Metall. Mater., 68, 1 (2023), 131-135.
Y. HANGAI, A. MASUDA, R. SUZUKI, Y. AOKI,
M. MATSUBARA and H. FUJII
Easy Dismantling and Separation of Friction
Stir-Welded Steel and Aluminum by Foaming
Int. J. Adv. Manuf. Technol., 126 (2023), 561-568.

M. SALEH, Y. MORISADA, K. USHIODA and H. FUJIIInterfacial
Microstructural
Evolution
andMechanical Properties in Dissimilar A1050
Aluminium and S45C Carbon Steel Friction Stir
Welded Joints Using Zn Interlayers
Mater. Chem. Phys., 304 (2023).

M. NEWISHY, M. JASKARI, A. JÄRVENPÄÄ, H. FUJII and
H. A. ABDEL-ALEEM
Friction Stir Welding of Dissimilar Al 6061-T6 toAISI 316 Stainless Steel: Microstructure andMechanical Properties
Materials, (2023).

T. NAGIRA, T. NAKAMURA, T. KIMURA, F. YOSHINAKA, T.
SAWAGUCHI, T. YAMASHITA, Y. AOKI and H. FUJII
Elucidation of Solidification Mode of Fe-Mn-Si
Alloy during TIG Spot Welding Using Synchrotron
X-ray
Q. J. Jpn. Weld. Soc., 41, 2 (2023), 1s-5s.

J. CHEN, Z. LI, J. HAN, L. PENG, H. FUJII, Y. WU and
H. CHENG
Investigation on Microstructure Evolution of
Mg-Gd-Zn-Zr
AlloysduringFriction
Stir
Processing by Liquid CO2 Cooling Assisted Stop
ActionMater. Sci. Eng. A., 876 (2023).

M. NISHIDA, S. HARJO, T. KAWASAKI, T. YAMASHITA and
W. GONG
Neutron Stress Measurement of W/Ti Composite
in Cryogenic Temperatures Using Time-of-Flight
MethodQuantum Beam Sci., 7, 1 (2023), 8-23.

26

H. MIAO, S. TSUTSUMI, T. YAMASHITA, Y. MORISADA and
H. FUJII
Fatigue Strength Improvement of Linear Friction
Welded Butt Joints of Low Carbon Steel by
Pressurizing after Oscillation
J. Manufacturing Processes, 102 (2023), 795-805.

R. YAMANOGLU, A. BAHADOR and K. KONDOH
Support Recycling in Additive Manufacturing: A Case
Study for Enhanced Wear Performance of Ti6Al4V
Alloy
Journal of Engineering Tribology, (2023).
R. YAMANOGLU, A. BAHADOR, K. KONDOH, C. DURAN,
Y. AKYILDIZ, Y. OZDEMIR and O. OZTURK
Characterization of Ti4Al4Mo/SiC Composite
Produced by Pressure-Assisted Sintering
Bulletin of Materials Science, 46 (2023), 104.

T. YAMASHITA, K. USHIODA and H. FUJII
Inhomogeneity of Microstructure along theThickness Direction in Stir Zone of Friction Stir
Welded Duplex Stainless SteelISIJ international, 63, 10 (2023), 1747-1757.

Y. WANG, M. WANG, B. CHEN, H. SUN, K. KONDOH,
L.-J. KECSKES and J. SHEN
A Thermal Activation Based Constitutive Model for
the Dynamic Deformation of AA5083 Processedby Large-Scale Equal-Channel Angular Pressing
Chin. J. Aeronaut., 36, 5 (2023), 499-507.

J. WAN, J. YANG, X. ZHOU, B. CHEN, J. SHEN, K. KONDOH
and J. LI
Superior Tensile Properties of Graphene/Al
Composites Assisted by In-Situ Alumina
Nanoparticles
Carbon, 204 (2023), 447-455.

X. GUO, L. JIA, Z. LU, H. XIE and K. KONDOH
Simultaneous Improvement on Strength andConductivity of
CrB2/Cu
Composites
byInhomogeneous Design
Mater. Lett., 349 (2023), 134874.

J. WAN, K. LI, H. GENG, B. CHEN, J. SHEN, Y. GUO,
K. KONDOH, A. BAHADOR and J. LI
Simultaneously Enhancing Strength and Ductilityof Selective Laser Melted AlSi10Mg via
Introducing In-Cell Al4C3 Nanorods
Materials Research Letters, 11, 6 (2023), 422-429.

R. ZHENG, S.-F. LI, R.-D.-K. MISRA, K. KONDOH and
Y.-F. YANG
Role of W in W-coated Cu Powder in Enhancing
the Densification-Conductivity Synergy of Laser
Powder Bed Fusion Built Cu Component
J. Mater. Process. Technol., 322 (2023), 118169.

S. Lu, S. LU, B. CHEN, M. QIAN, Q. WEI, K. KONDOH and
J. SHEN
Phase Transformation Induced Twinning in
Commercially Pure Titanium: An In-Situ Study
Scr. Mater., 229 (2023), 115350.

J. WAN, B. CHEN, X. ZHOU, L. CAO, H. GENG, J. SHEN,
A. BAHADOR, K. KONDOH and J. LI
CNT-induced
HeterogeneousMatrix
Grain
Structure in CNTs/Al Composites
Carbon, 216 (2023), 118529.

J. WAN, H. GENG, B. CHEN, J. SHEN, K. KONDOH and J. LI
Assessing the Thermal Stability of Laser Powder
Bed Fused AlSi10Mg by Short-Period Thermal
Exposure
Virtual and Physical Prototyping, 18, 1 (2023).

M. HOU, L. JIA, Z. LU, B. CHEN, K. KONDOH and J. CUIFirst-principles Study and Its Experimental
Verification on the Strength and Ductility of O/Si
Solid Solution Strengthened Ti Alloys
J. Mater. Res. Technol-JMRT, 27 (2023),
7778-7786.).

S.-X. WANG, S.-F. LI, X.-M. GAN, R. ZHENG, D. YE, R.-D.-K.
MISRA, K. KONDOH and Y.-F. YANG
Achieving Synergy of Mechanical Isotropy andTensile Properties by Constructing Equiaxed
Microstructure in As-Printed Ti Alloys
Scr. Mater., 229 (2023), 115379.

27

X.-f. GUO, L. JIA, Z.-l. LU, H. XIE and K. KONDOH
Enhanced Combination of Strength and Electrical
Conductivity Properties with CrB2 Reinforced Cu
Matrix Composites Fabricated by Powder
Metallurgy
Mater. Today Commun., 38 (2023), 107980.

L. LIU, S. LI, D. PAN, D. HUI, X. ZHANG, B. LI, T. LIANG,
P. SHI, A. BAHADOR, J. UMEDA, K. KONDOH, L. GAO, Z.
WANG, G. LI, S. ZHANG, R. WANG and W. CHEN
Loss-free Tensile Ductility of Dual-Structure
Titanium Composites via an Interdiffusion and
Self-Organization Strategy
PNAS, 120, 28 (2023), e2302234120.

X.-F. GUO, L. JIA, Z.-L. LU, H. XIE and K. KONDOH
Mechanical and Tribological Property of Cu/CrB2
Composites under Dry Sliding Condition
Mater. Sci. Technol., 0 (2023).

S. WANG, S. LI, L. LIU, S. LI, L. GAO, H. LIU, X. ZHANG, B. LI,
B. CHEN, J. UMEDA, K. KONDOH and S. ZHOU
Microstructure and Mechanical Properties of
Powder Metallurgy Ti-TiBw-xFe Titanium Matrix
Composites Using Ti-TiBw Composite Powder
J. Mater. Sci., 58 (2023), 13662-13667.).

X. SHI, X. WANG, B. CHEN, J. UMEDA, K. KONDOH and
J. SHEN
Effect of Bimodal Grain Structure on the Yielding
Behavior of Commercial Purity Titanium Under
Quasi-static Tension
Met. Mater. -Int., 229 (2023), 2207-2215.

P. NYANORA, H.-M. YEHIAB, A. BAHADORC, J. UMEDA,
K. KONDOH and M.-A. HASSAND
Microstructure and Mechanical Properties ofHybrid Nano-Titanium Carbide-Carbon Nanotubes(nano-TiC-CNT) Reinforced Aluminium Matrix
Composite
Adv. Compos. Mater., (2023), 1-19.

N. MORI, H. KAWASAKI, E. NISHIDA, Y. KANEMOTO,
H. MIYAJI, J. UMEDA and K. KONDOH
Rose Bengal-Decorated Rice Husk-Derived Silica
Nanoparticles
Enhanced
SingletOxygenGeneration for Antimicrobial Photodynamic
Inactivation
J. Mater. Sci., 58 (2023), 2801-2813.

J. PETERSON, S. KARIYA, A. ISSARIYAPAT, J. UMEDA and
K. KONDOH
Experimentally Mapping theOriented-To-Misoriented Transition in Laser
Powder Bed Fusion Ti-10%Mo Alloys
Scr. Mater., 231 (2023), 115472.

X. WANG, B. CHEN, J. UMEDA, A. BAHADOR, K. KONDOH
and J. SHEN
Precision Control of Oxygen Content in CP-Ti for
Ultra-High Strength through Titanium Oxide
Decomposition: An In-Situ Study Xianzhe Shi
Mater. Des., 227 (2023), 111797.

S. KARIYA, A. ISSARIYAPAT, A. BAHADOR, J. UMEDA, J. SHEN
and K. KONDOH
Effect of Grain Size on the Tensile Ductility andFracture Mechanism of Ti–O Alloys
Mater. Sci. Eng. A., 874 (2023), 145068.

X. YE, Z. SUO, Z. HENG, B. CHEN, Q. WEI, J. UMEDA,
K. KONDOH and J. SHEN
An In-Situ Study of Static Recrystallization in Mg
Using High Temperature EBSD
J. Magnes. Alloy., (2023).

A. ISSARIYAPAT, J. HUANG, T. TERAMAE, S. KARIYA,
A. BAHADOR, P. VISUTTIPITUKUL, J. UMEDA, A. ALHAZAA
and K. KONDOH
Microstructure Refinement and Strengthening
Mechanisms of Additively Manufactured Ti-Zr
Alloys Prepared from Pre-Mixed Feedstock
Addit. Manuf., 73 (2023), 103649.

B. NALCACI, M. BAYSUN, A. BAHADOR, J. UMEDA,
S. MÜNSTERMANN, A.-A. KAYA and M. ERDOGAN
Influence of Two-Step Austempering at Different
Temperatures on Mechanical and Microstructural
Properties of AISI 9254 High Silicon Steel
Ironmaking&
Steelmaking,50(2023),
1331-1339.

28

H. HANADA, S. KARIYA, K. SHITARA, J. UMEDA and K.
KONDOH
Controlling Intermetallic Compound Distributionin Additively Manufactured Ti-Cu Alloys by Heat
Treatment
J. Jpn. Soc. Powder Powder Metal., 70, 6 (2023),
290-297 (in Japanese).

C. SAWANISHI, H. MATSUDA, Y. OKITA and R. IKEDA
Development of Resistance Spot Welding
Technology Applying Multi-Stage Adaptive
Control for Narrow Pitch Spot Welding of HighStrength Steel Sheets
Q. J. Jpn. Weld. Soc., 41, 1 (2023), 1-10 (inJapanese).

A. BAHADOR, A. AMRIN, S. KARIYA, A. ISSARIYAPAT,
O. GOKCEKAYA, G. ZHAO, J. UMEDA, Y. YANG, M. QIAN and
K. KONDOH
Excellent Tensile Yield Strength with Ultrafine
Grain and Tailored Microstructure in PlasticallyDeformed Ti-Re Alloys
J. Alloy. Compd, 967 (2023), 171544.

M. NEIKTER, P. BHASKAR, S. SINGH, K. KADOI, C. LYPHOUT,
F. SVAHN and R. PEDERSON
Tensile Properties of Laser Powder Bed Fusion
Built JBK-75 Austenitic Stainless SteelMater. Sci. Eng. A., (2023), 144911.
S. SINGH, K. KADOI, O. OJO, B. ALEXANDROV and
J. ANDERSSONThe Effects of Chemistry Variations on Hot
Cracking Susceptibility of Haynes® 282® for
Aerospace Applications
Mater. Des., 228 (2023), 111853.

J. PETERSON, A. ISSARIYAPAT, S. KARIYA, J. UMEDA and K.
KONDOH
The Mechanical and Microstructural Behavior ofHeat Treated, Texture-Controlled Ti-10%Mo Alloys
Manufactured by Laser Powder Bed Fusion
Mater. Sci. Eng. A., 884 (2023), 145553.

M. SAKATA, K. KADOI and H. INOUE
Age-hardening Behaviors of the Weld Metals of
22% Cr and 25% Cr Duplex Stainless Steels at
400°C
J. Nucl. Mater., (2023), 154438.

S. ABOLKASSEM, A. ELSAYED, S. KARIYA, J. UMEDA and
K. KONDOH
Influence of Thermo-Mechanical Processing on
Microstructure and Properties of Bulk Metallic
Glassy Alloys-Reinforced Al Matrix Composites
Prepared by Powder Metallurgy
J. Mater. Res. Technol-JMRT, 27 (2023),
8197-8208.

K. KADOI, S. UENO and H. INOUE
Effects of Ferrite Content and Concentrations ofCarbon and Silicon on Weld Solidification
Cracking Susceptibility of Stainless Steels
J. Mater. Res. Technol-JMRT, 25 (2023),
1314-1321.

S. KARIYA, A. ISSARIYAPAT, A. BAHADOR, J. UMEDA, J. SHEN,
K. YAMANAKA, A. CHIBA and K. KONDOH
Novel Tensile Deformation Mode in Laser Powder
Bed Fusion Prepared Ti-O Alloy
Mater. Sci. Eng. A., 892 (2023), 146057.

K. KADOI, M. KOGURE and H. INOUE
Effect of Ferrite Morphology on Pitting Corrosion
Resistance of Austenitic Stainless Steel Weld
MetalsCorrosion Sci., 221 (2023), 1113356.

D. WU, J. XIN, F. LI, C. SHEN, L. WANG, X. HUA, H. LEI andN. MA
Crack Suppression in Wire-Arc Directed Energy
Deposition of a Γ-TiAl Alloy
J. Manufacturing Processes, 107 (2023), 155-165.

K. KADOI
Latest Researches on Corrosion in Stainless SteelWelds
J. Japan Welding Soc., (2023), 323-324 (inJapanese).

M. MATSUSHITA, D. YAMAGISHI, S. IGI and R. IKEDA
Development of Double‑sided Friction Stir
Welding of Advanced High Strength Steel Sheets
Weld. World, 67 (2023), 561-571.

29

S. SINGH, J. ANDERSSON and K. KADOI
Microstructure
Gradient
Formation
inElectron-Beam Melting Powder-Bed Fusion of a
Gamma-Prime Ni-based Superalloy
Mater. Charact., (2023), 113370.

F. LI, N. KANNARI, J. MARUYAMA, K. SATO and H. ABE
Defective Multi-Element Hydroxides Nanosheets
for Rapid Removal of Anionic Organic Dyes from
Water and Oxygen Evolution Reaction
J. Hazard. Mater., 447 (2023), 130803.

K. KADOI
Microstructural Characteristic and Properties ofStainless Steel Welds
J. Japan Welding Soc., 92 (2023), 544-554 (inJapanese).

T. ADSCHIRI, S. TAKAMI, M. UMETSU, S. OHARA, T. NAKA,
K. MINAMI, D. HOJO, T. TOGASHI, T. ARITA, M. TAGUCHI,
M. ITOH, N. AOKI, G. SEONG, T. TOMAI and A. YOKO
Supercritical Hydrothermal Reactions for Material
Synthesis
Bull. Chem. Soc. Jpn., 96 (2023).

Y. HOU and K. KADOI
Nucleation of Equiaxed Δ-Ferrite by Accelerating
TiN Formation Controlled by Oxide during
Welding of Ferritic Stainless SteelMater. Charact., (2023), 113212.

Y. KOWAKA, K. NOZAKI, T. MIHARA, K. YAMASHITA,
H. MIURA, Z. TAN and S. OHARA
Development of TiO2 Nanosheets with High Dye
Degradation Performance by Regulating Crystal
GrowthMaterials, 16, 3 (2023), 1229.

A. OI, F. SPIRRETT and S. KIRIHARA
Stereolithography Additive Manufacturing ofGlass/ceramic Composite Components with
Self-similar Structures
J. Smart Process., 12, 4 (2023), 229-235 (inJapanese).

M. MILOSEVIC, M. RADOICIC, S. OHARA, H. ABE,
J. SPASOJEVIC, L. MANCIC and Z. SAPONJIC
Advanced
Photocatalysis
Mediatedby
TiO2/Ag/TiO2 Nanoparticles Modified Cotton
FabricCellulose, 30 (2023), 4749-4771.

F. SPIRRETT and S. KIRIHARA
Envrionmental Control of Solid Electrolytes by
Stereolithography Additive Manufacturing
J. Smart Process., 12, 4 (2023), 219-224 (inJapanese).
F. SPIRRETT, A. OI and S. KIRIHARA
Additive
Manufacturing
Glass/ceramic
Structures
Geometries
Open Ceramics, 17 (2023).

of
with

M.-S.-M. ISA, M.-R. MUHAMAD, F. YUSOF, N. YUSOFF,
Z. BRYTAN, T. SUGA, Y. MORISADA and H. FUJII
Improved Mechanical and Electrical Properties of
Copper-Aluminum Joints with Highly Aligned
Graphene Reinforcement via Friction Stir Spot
Welding
J. Mater. Res. Technol-JMRT, 24 (2023),
9203-9215.

Composite
Self-Similar[Mechanics, Strength & Structural Design]

T. NAKA, J. VALENTA, T. NAKANE, S. ISHII, M. NAKAYAMA,
H. MAMIYA, K. TAKEHANA, N. TSUJII, Y. IMANAKA,
Y. MATSUSHITA, H. ABE, T. UCHIKOSHI and H. YUSA
Phase Transitions and Slow Spin Dynamics of
Slightly Inverted A-site Spinel CoAl2-xGaxO4
Journal of Physics: Condensed Matter, 36, 12(2023), 125801.

Y. KITANI, K. IKUSHIMA, M. ARAI, N. HIDETAKA, N. MA and
N. SHIBAHARA
Effect of Load Changing on Creep Fatigue Life of
Pipe Joints
Quartely J Jpn. Welding Soc., 41, 2 (2023),
36s-40s.

F. LI, K. YOSHIDA, N.-V. CHUC, M. OSADAC and H. ABE
Understanding the Role of Solvents in Bottom-Up
Synthesis of Multi-Element Hydroxides
RSC Adv., 13 (2023), 75-82.

30

N. MA, K. NARASAKI, Y. OKAWA, Y. TAI, T. OGUSHI and
T. IDE
Development of Fast Computing Model for
Evaluating Heat Transfer Characteristics ofLotus-Type Porous Copper Fin
Journal of the Japan Institute of Electronics
Packaging, 26, 1 (2023), 151-157 (in Japanese).

M.-Q. ZAFAR, J. WANG, Z. ZHANG, C. WU, H. ZHAO,
G. HUSSAIN and N. MA
Thermomechanical Process Simulation andExperimental Veri-fication for Laser Additive
Manufacturing of Inconel718
Materials, 16, 2596 (2023), 1-18.
T. OHTA, J. HE, S. TAKAHASHI and N. MA
Measurement and Identified Prediction Equation
for Residual Stress Distribution in Aluminum Alloy
A5052 under Various Pneumatic Shot Peening
Conditions
J. Mater. Eng. Perform., 1059-9495, 8031 (2023),
1-13.

F. JIN, H.-D. RAO, Q. WANG, G. WEN, P. LIU, J. LIU, J. SHEN,
J. LI, J. XIONG and N. MA
Heat-pattern
InducedNon-Uniform
RadialMicrostructure and Properties of Ti-6Al-4V Joint
Prepared by Rotary Friction Welding
Mater. Charact., 195, 112536 (2023), 1-15.
S. BAEK, N. MA, J. SONG, D. KIM, S. LEE, C. CHEN and
D. KIM
Effect of Mg Remelting and Mechanical Hooks of
Steel on the Mechanical and Fatigue Responses ofResistance Element Welded AZ31/DP780 Joints:
Experimental, FEM and Thermodynamic
J. Mater. Res. Technol-JMRT, 22 (2023),
1210-1237.

Y. KITANI, Y. YAMAUCHI, K. IKUSHIMA, N. HIDETAKA, N. MA
and M. SHIBAHARA
Creep Analysis of Large-scale Weld Pipe Structurein Thermal Power Plant
Quartely Journal of Japan Welding Society, 41, 2(2023), 58s-62s.
R. GENG, Y. CHENG, L. CHAO, Z. WEI and N. MA
Microstructure and Solute Concentration Analysisof Epitaxial Growth during Wire and Arc Additive
Manufacturing of Aluminum Alloy
Crystals, 13, 776 (2023), 1-15.

F. CAO, T. SUN, J. HU, W. HOU, G. HUANG, Y. SHEN, N. MA,
P. GENG, W. HU and X. QU
Enhanced
MechanicalandAnticorrosion
Properties in Cryogenic Friction Stir Processed
Duplex Stainless SteelMater. Des., 225, 111492 (2023), 1-16.

Q. WANG, N. MA, W. HUANG, J. SHI, X. LUO, S. TOMITAKA,
S. MOROOKA and M. WATANABEKey Role of Temperature on Delamination in
Solid-State Additive Manufacturing via Supersonic
ImpactMaterials Research Letters, 11 (2023), 2961-2988.

T.-L. AUNG, N. MA, Y. OKITSU, S. HAYASHI, K. TAKADA and
T. NAITO
Measurement and Modelling of Strain-Path
Dependent Anisotropic Hardening Behaviors ofHigh Strength Steels Subjected to Pre-Strains
J. Mater. Res. Technol-JMRT, 2158282 (2023),
1-9.

K. SONG, K. WANG, L. ZHAO, L. XU, N. MA, Y. HAN, K. HAO,
L. ZHANG and Y. GAO
A Physically-Based Constitutive Model for a Novel
Heat Resistant Martensitic Steel under Different
CyclicLoading
Modes:
Microstructural
Strengthening Mechanisms
Int. J. Plast., 165, 103611 (2023), 1-27.

Y. GAO, P. GENG, P. CHENG, N. MA, M. FUJIKUBO andY. BAI
Wet Collapse Mechanism of Steel-Reinforced
Flexible Pipe Structures under Curvature Effect:
PhysicalExperimentation
andNumerical
Simulation
Compos. Struct., 307, 116539 (2023), 1-21.

Q. WANG, N. MA, J. CHEN, S. TOMITAKA and
M. WATANABE
Microstructure Characteristics of Warm Spray
Additively Manufactured Inconel 718 Superalloys
and Correlation with Mechanical Performance
Mater. Lett., 341 (2023), 134230.

31

J. GAO, L. HU, N. MA, X. FANG, Z. XU and Y. HE
Effect of Cu Rich Phase Growth on Creep
Deformation of Fe-Cr-Ni-Cu Medium-Entropy
Alloy: A Phase Field Study
Metals, 13, 1219 (2023), 1-13.

Y. YIN, Q. TAN, N. YANG, X. CHEN, W. REN, L. LIU, H. CHEN,
A. ATRENS, N. MA, H. HUANG and M. ZHANG
Cost-effective
andFacileRoutetoUltrafine-Microstructure High-Entropy Alloy for
Cryogenic Applications
Mater. Sci. Eng. A., 881, 145408 (2023), 1-13.

J. KIM, J.-H. KIM, J. PARK, S. BAEK, N. MA, S.-J. LEE and
D. KIM
Continuous Tempering Effect Induced PWHT
Alternative Technology Using Wire Arc Additive
Manufacturing for Application in Replacing
Nuclear Pressurized Water Reactor System
Repairing: CALPHAD, FEM Simulation, and EBSD
Investigation
J. Mater. Res. Technol-JMRT, 25 (2023),
2961-2988.

M. FAN, Y. WANG, X. HUO, N. MA and F. LU
TheCreep-Fatigue
Fracture
BehaviorofHeat-Resistant Steel Welded Joint under Different
Tensile and Compressive Holding
Mater. Sci. Eng. A., 882, 145471 (2023), 1-12.
Z. YAO, M. OMIYA, N. MA, S. NISHI, K. TAKADA, K. OKATO,
K. OIDE, T. KOBAYASHI, J. HAN and K. TERADA
Local Mechanical Characterization and Fracture
Prediction Modeling for Resistance Spot-Welded
Joints of Advanced High-Strength SteelMater. Today Commun., 36, 106787 (2023), 1-14.

M. TSUTSUMI, S. YAMAGAMI, K. NARASAKI, D. WATANUKI,
Y. MIYAMOTO and N. MA
Measurement of Internal Residual Stress ofThree-Directional Components and Estimation ofInherent Strain in Carburized Steel for Large
Rolling Bearings by Combining the Contour
Method and XRD Method
J Jpn. Soc. Mater. Sci., 77, 2 (2023), 550-557.

Z. YU, N. MA, H. MURAKAWA, G. WATANABE, M. LIU andY. MAPrediction of the Fatigue Curve of High-Strength
Steel Resistance Spot Welding Joints by Finite
Element Analysis and Machine Learning
Int. J. Adv. Manuf. Technol., 128 (2023),
2763-2779.

N. MA and S. WU
Recent Technologies about Incremental Formingfor Formability Improvement
Bulletin of Japan Scoety of Technology of
Plasticity, 6, 67 (2023), 380-385 (in Japanese).

N. MA
Technological Innovation Induced by Inverse
Approach
Bulletin of Japan Scoety of Technology of
Plasticity, 6, 68 (2023), 433-434 (in Japanese).

T.-L. AUNG, N. MA, K. KISHIDA and F. LU
Unified Inverse Isogeometric Analysis andDistributed Fiber Optic Strain Sensing for
Monitoring Structure Deformation and StressAppl. Math. Model., 120 (2023), 733-751.

Y. XU, X. QIU, W. LI, S. WANG, N. MA, M. UESHIMA,
C. CHEN and K. SUGANUM
Development of High Thermal Conductivity of
Ag/diamond Composite Sintering Paste and Its
Thermal Shock Reliability Evaluation in SiC Power
Modules
JMRT, 26 (2023), 1079-1093.

R. TIAN, S. CHEN, B. YANG, J. WU, P. LI, N. CHEN, H. LI,
Q. WANG, H. XIA and N. MA
Elemental
Diffusion,
AtomicSubstitution
Mechanisms and Interfacial Fracture Behavior in
Laser Welded–brazed Al/Ti
Mater. Charact., 202, 112998 (2023), 1-14.

Y. ZHANG, D. WU, D. XIE, H. WU, C. LIN, Q. ZHANG, J. KE,
G. TAN, N. MA and Y. GUO
A Novel Hybrid Laser Forging and Arc Welding
Process for Improving Weld Performancesr
Int. J. Heat Mass Transf., 212, 124289 (2023),
1-11.

32

J. PARK, G. AN, N. MA and S. KIM
Prediction of Transverse Welding Residual Stress
Considering Transverse and Bending Constraints
in Butt Welding
J. Manufacturing Processes, 102 (2023), 182-194.

W. LI, P. GENG, Q. WANG, N. MA, S. ZHAO and C. ZHAO
Effectof
ThermalConditionon
Isothermal-Pressing Joined Strength of Silanized
Al Alloy/carbon Fiber-Reinforced Polyamide-6
J. Mater. Res. Technol-JMRT, 24 (2023).

S. HUANG, Y. WANG, M. FAN, X. HUO, N. MA and F. LU
The Heterogeneous Microstructure of Laser
Welded Joint and Its Effect on Mechanical
Properties for Dissimilar 9Cr Steel and Alloy 617
Journal of materials research and technology, 26(2023), 1096-1106.

H. HUANG, N. MA, K. KADO, S. RASHED, K. NARASAKI,
Y. AGANO, N. TANAKA, W. MAO,
Development of gouging heat source model andnumerical analysis of gouging/welding heateffects
J. Manuf. Process., 111(2023), 101-113.

P. GENG, H. MA, W. LI, K. MURAKAMI, Q. WANG, N. MA,
Y. AOKI, H. FUJII and C. CHEN
Improving Bonding Strength of Al/CFRTP Hybrid
Joint through Modifying Friction Spot Joining
Tools
Compos. Pt. B-Eng., 254 (2023), 110588-11058.

S. BAEK, J. KIM, T. KWAK, T. LEE, H.-C. LEE, C. CHEN,
P. GENG, N. MA, S.-J. LEE, D. KIM
Al heat affected zone-less resistance element
welded lap joints of Al alloy and 1 GPa class steel:transition of microstructure and fracture with heattransfer
J. Mater. Res. Technol-JMRT, 28 (2023)
3541–3565.

N.-A. MUHAMMAD, P. GENG, C.-S. WU and N. MA
Unravelling the Ultrasonic Effect on ResidualStressandMicrostructureinDissimilar
Ultrasonic-Assisted Friction Stir Welding of Al/Mg
AlloysInt. J. Machine Tools and Manufacture, 186(2023), 104004., 1-15.

Y.-A. NASSER, N. MA, S. RASHED, K. MIYAMOTO andH. MIWA
Numerical Modelling for Efficient Analysis of Large
Size Multi Stage Incremental Sheet Forming
J. Manuf. Mater Process. 2023, v8n3, 1-18.
S. REN, H. CHEN, N. MA, W. LI, S. SAEKI, Y. IWAMOTO,
J. YANG
Coaxial one-side resistance spot welding forcross-lap joints of Al5052 and CFRP: Thermal
process and strength evaluation,
J. Mater. Res. Technol-JMRT, 28 (2024)
1032–1043.

Z. DANG, G. QIN, H. MA and P. GENG
Multi-scale Characterizations of Microstructureand Mechanical Properties of Ti6242 Alloy Linear
Friction Welded Joint with Post-Welded Heat
Treatment
Trans. Nonferrous Metals Society of China, 33(2023).

T. OZAWA, H. KOSUGE, T. KAWABATA and Y. MIKAMI
Local Compression Process Avoiding Toughness
ChangeWeld. World, 67, 3 (2023), 607-615.

P. GENG, H. MA, M. WANG, G. QIN, J. ZHOU, C. ZHANG,
Y. MA, N. MA and H. FUJII
Dissimilar Linear Friction Welding of Ni-based
Superalloys
Int. J. Machine Tools and Manufacture, 191(2023).

H. SERIZAWA, K. INOSE, R. OHASHI, Y. SUGIMOTO,
T. MINODA and T. MURAKAMI
Study on Tensile Shear Strength of Dissimilar Lap
Joints for Multi-Material Structures
Quarterly J. Japan Welding Soc., 41, 1 (2023),
124-132 (in Japanese).

Y. MA, R. AKITA, Y. ABE, P. LUO, P. GENG, S. TSUTSUMI andN. MA
Mechanical Performance Evaluation of Multi-Point
Clinch-Adhesive Joints of Aluminum Alloy
A5052-H34 and High-Strength Steel JSC780
Automot. Innov., 7 (2023), 1-12.

33

H. SERIZAWA, K. INOSE, R. OHASHI, Y. SUGIMOTO,
T. MINODA and T. MURAKAMI
Study on Shear Fatigue Properties of Dissimilar
Lap Joints for Multi-Material Structures
Quarterly J. Japan Welding Soc., 41, 1 (2023),
133-140 (in Japanese).
H. SERIZAWA
Evaluation on Joint Performances of Advanced
Multi-Material Dissimilar Lap Joints
Key. Eng. Mater., 966 (2023), 83-90.
H. SERIZAWA and S. FUJITA
Research on Corrosion Fatigue Property Test of
Steel/Aluminum Alloy Weld-Bonded Lap Joint inHigh Temperature and High Humidity
Proc. National Symp. on Welding Mechanics andDesign 2023, (2023), 378-383 (in Japanese).
Y. ASAOKA, Y. SUGIMOTO and H. SERIZAWA
Research on Heat Generation Behavior in Friction
Stir Spot Welding of Metal/CFRTP Lap Joints
Proc. National Symp. on Welding Mechanics andDesign 2023, (2023), 513-517 (in Japanese).
[General Welding]
M. TANAKA
Sending Cheers to the Smart Processing
J. Smart Process., 12, 1 (2023), 1-2 (in Japanese).
M. KATSUMATA, K. KONDOH, H. NISHIKAWA and
M. TANAKA
Overview of the JWRI Coupling Internship and Its
Expansion, and a Prospect of “JWRI HUST-OU” in
VietnamJ. Japan Welding Soc., 92, 1 (2023), 42-48(in Japanese).
Y. MIKAMI and M. TANAKA
Outreach Activities on Welding and Joining at the
JWRI, Osaka University
J. Japan Welding Soc., 92, 1 (2023), 33-37(in Japanese).

34

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/