広島大学

Basic Information

Academic Degrees

• Osaka University

Educational Activity

Course in Charge

1. 2024, Undergraduate Education, First Semester, Technical English
2. 2024, Undergraduate Education, First Semester, Experiments in Mechanical Engineering I
3. 2024, Undergraduate Education, First Semester, Computer Aided Design
4. 2024, Undergraduate Education, First Semester, Computer Aided Design
5. 2024, Undergraduate Education, Second Semester, Mechanical Engineering Design and Production
6. 2024, Undergraduate Education, Year, Graduation Thesis
7. 2024, Graduate Education (Master's Program) , 1Term, Special Exercises on Mechanical Engineering A
8. 2024, Graduate Education (Master's Program) , 2Term, Special Exercises on Mechanical Engineering A
9. 2024, Graduate Education (Master's Program) , 3Term, Special Exercises on Mechanical Engineering B
10. 2024, Graduate Education (Master's Program) , 4Term, Special Exercises on Mechanical Engineering B
11. 2024, Graduate Education (Master's Program) , Academic Year, Special Study on Mechanical Engineering
12. 2024, Graduate Education (Doctoral Program) , Academic Year, Special Study on Mechanical Engineering

Research Activities

Academic Papers

1. ★, High-pressure linear friction welding of dissimilar AA5052-H34 and AA6061-T6 joint, Journal of Materials Research and Technology, 26, 4483-4494, 20230825
   Link to Paper Search Results by DOI
2. High-speed hot-wire laser brazing technology for steel/aluminum alloy dissimilar joint using twin beam irradiation, Welding International, 20230705
   Link to Paper Search Results by DOI
3. ★, High e‹ciency Al alloy joints during linear friction welding, Journal of light metal welding, 61(8), 1-6, 20230815
4. Factors influencing mechanical properties of dissimilar steel/aluminum-alloy flare-V groove joints made by high-speed hot-wire laser brazing technology, Welding in the World, 20230531
   Link to Paper Search Results by DOI
5. High-speed Hot-wire laser Brazing Technology for Steel/Aluminum alloy Dissimilar Joint using Twin Beam Irradiation, QUARTERLY JOURNAL OF THE JAPAN WELDING SOCIETY, 41(1), 116-123, 20230203
   Link to Paper Search Results by DOI
6. ★, Influence of solute Mg and Zener–Hollomon parameter on microstructural evolution of linear-friction-welded Al joints, Journal of Materials Research and Technology, 20230218
   Link to Paper Search Results by DOI
7. Bead shape control in high-speed fillet welding using hot-wire GMA laser hybrid welding technology, Welding in the World, 28, 20230210
   Link to Paper Search Results by DOI
8. ★, Linear friction welding of AA1050-H24 joint and AA5052-H34 joint, IIW 2022 International Conference on Welding and Joining, 75, 349-351, 20220719
9. The optimization of high-efficiency and low heat input how-wire gas metal arc welding for thick steel plate in shipbuilding industry, IIW 2022 International Conference on Joining and Welding, 75, 346-348, 20220719
10. Bead shape effect on solidification cracking during hot-wire laser welding on narrow-gap joint of Ni-based alloy, IIW 2022 International Conference on Joining and Welding, 75, 443-444, 20220719
11. Development of narrow-gap welding for ultra-thick cast steel using how-wire method and high-power diode laser, IIW 2022 International conference on Joining and Welding, 75, 343-345, 20220719
12. Development of low distortion fillet welding technology combining how-wire and high-power diode laser on 9%-Ni steel for LNG-fueled ship, IIW 2022 International Conference on Joining and Welding, 75, 376-377, 20220719
13. ★, Strengthening mechanism of high-pressure linear friction welded AA7075-T6 joint, MATERIALS CHARACTERIZATION, 191, 202209
    Link to Paper Search Results by DOI
14. ★, Microstructure evolution and hardness distribution of linear friction welded AA5052-H34 joint and AA5083-O joint, Journal of Materials Research and Technology, 17, 2419-2430, 20220217
    Link to Paper Search Results by DOI
15. ★, Effect of the welding parameters on microstructure and mechanical properties of linear friction welded Ti-6Al-4V alloy, Journal of Manufacturing Processes, 75, 651-663, 20220126
    Link to Paper Search Results by DOI
16. ★, Effect of applied pressure on microstructure and mechanical properties of linear friction welded AA1050-H24 and AA5052-H34 joints, Science and Technology of Welding and Joining, 20211209
    Link to Paper Search Results by DOI
17. Undercut suppression in high-speed fillet welding using hot-wire GMAW, TEAM 2020/21, 34(1A), 56-61, 20211206
18. ★, Flat hardness distribution in AA6061 joints by linear friction welding, Scientific Reports, 11, 20210603
    Link to Paper Search Results by DOI
19. Thermo-mechanical modeling and analysis of friction spot joining of Al alloy and carbon fiber-reinforced polymer, Journal of Materials Research and Technology, 12, 1777-1793, 20210403
    Link to Paper Search Results by DOI
20. ★, Linear friction welding of Ti-6Al-4V alloy fabricated below beta phase transformation temperature, Scripta Materialia, 15, 12-16, 20200914
    Link to Paper Search Results by DOI
21. ★, Dissimilar friction stir welding of pure Ti and carbon fibre reinforced plastic, Science and Technology of Welding and Joining, 25, 600-608, 20200708
    Link to Paper Search Results by DOI
22. ★, Effect of an Al filler material on interfacial microstructure and mechanical properties of dissimilar friction stir welded Ti/Mg joint, Materials Characterization, 155, 20190712
    Link to Paper Search Results by DOI
23. ★, Dissimilar friction stir welding of immiscible titanium and magnesium, Materialia, 7, 20190704
    Link to Paper Search Results by DOI
24. ★, Dissimilar friction stir welding of pure Ti and pure Al, Materials Science and Engineering A, 730(11), 168-176, 20180701
    Link to Paper Search Results by DOI

Invited Lecture, Oral Presentation, Poster Presentation

1. Dissimilar linear friction welding of AA5052 and AA6061, Jeong-Won Choi, Jin-Ming Su, Motomichi Yamamoto, Yasuhiro Aoki, Hidetoshi Fujii, Visual JW2022, 2022/10/25, With Invitation, English, JWRI, Osaka University, Osaka, Japan
2. Investigation of High Efficiency Al Alloy Joints in Linear Friction Welding, Japan Welding Society (JWS), 2022/04/14, With Invitation, Japanese
3. High efficiency of Al alloy joints in linear friction welding, Jeong-Won Choi, International Welding & Joining Conference 2022 (IWJC2022), 2022/10/05, With Invitation, English
4. Linear friction welding of AA1050-H24 joint and AA5052-H34 joint, Jeong-Won Choi, IIW2022, 2022/07/18, With Invitation, English
5. Effect of tool rotation speed on friction stir welded Ti-CFRP joint, Jeong-Won Choi, MRM2021, 2021/12, With Invitation, English
6. Linear friction welding of AA6061, Jeong-Won Choi, IIW2021, 2021/07/17, With Invitation, English

External Funds

Acceptance Results of Competitive Funds

1. The Japan Titanium Society Research Grant, 2024/04, 2025/03
2. Yashima Environment Technology Foundation Resrach grant, 2024/04, 2025/03
3. Suzuki Foundation Research grants (General), 2024/04, 2026/03
4. JFE 21st Century Foundation research grant, 2024/01, 2025/12
5. Amano Research Grant, Development of stainless steel joining technology for marine gas pipelines, 2023/09/01, 2024/08/31
6. The Iron and Steel Institute of Japan (ISIJ), Research grant, 2023/04, 2025/03
7. Japan Aluminium Association, Research grant, 2023/04, 2024/03
8. Japan Aluminium Association, Research grant, 2022/04, 2023/03

Social Activities

History as Committee Members

1. Japan Welding Society, 2023/04, 2024/03
2. Japan Welding Society (JWS), 2022/04, 2023/03
3. Joining and Material processing for Light Structures, 2022/04, 2024/02
4. Japan Welding Society, 2022/04, 2023/03
5. Japan Welding Society, 2021/05, 2022/03
6. Japan Welding Society (JWS), 2021/04, 2022/03