Ibaraki University's
Graduate School of Science and Engineering (Engineering)
Department of Materials Science and Engineering



Academic degrees

  1. Doctor of Engineering The University of Tokyo 1995

Research Areas

  1. Structural/Functional Materials

Research keywords

  1. Electron microscopy, Grain boundary and Interface, Welding


  1. Research paper (scientific journal) Joint Interface Characterization of Ultrasonic Spot-Welded Mg Alloy Interlayered with Cu Coating Amir Badamian, Chihiro Iwamoto, Shigeo Sato and Suguru Tashiro metals MDPI 9/ 5 2019/05/08 10.3390/met9050532
  2. Research paper (scientific journal) Joint Analysis of deformation behavior in beta titanium alloys using TEM in-situ observation Kohei ONOSE, Shigeru KURAMOTO, Takuya SUZUKI, Ya-Ling CHANG, Eri NAKAGAWA, Takahito OHMURA, Chihiro IWAMOTO Journal of The Japan Institute of Light Metals 69/ 5, 273-280 2019/05/01
  3. (MISC) Other article Joint Trans-scale Analysis Reveals Design Principles for Mechanical Properties of Cu-Pd-Ag Alloy Wires with Nano Structures Advances in Engineering 2019/04/09 URL
  4. Research paper (scientific journal) Joint Microstructure of Joint between Stranded Wire and Substrate Welded by Ultrasonic Welding Chihiro Iwamoto, Keisuke Yamauchi, Kazuki Motomura, Yoichi Hashimoto and Kensuke Hamada Applied Science MDPI 9/ 534 2019/02/05 10.3390/app9030534
  5. (MISC) Prompt report, short report, and research note, etc. (scientific journal) Joint Microstructure of Ag-Cu-Pd Alloy Wires Hardened by Heat Treatment Chihiro Iwamoto, Mitsuhiro Saito, Fumio Watanabe, Risei Koitabashi Materia Japan 58/ 2, 79 2019/02/01 10.2320/materia.58.79

Research presentations

  1. Oral presentation(general) Microstructural Evolution of Ultrasonic-Welded Cu Stranded Wire The 72nd IIW Annual Assembly & International conference 2019/07/10
  2. Poster presentation 伸線加工されたAg-Cu-Pd合金における棒状組織の硬度への寄与 日本顕微鏡学会第75回学術講演会 2019/06/17
  3. Oral presentation(general) Ag-Cu-Pd合金中の微細析出物界面の構造 日本顕微鏡学会第75回学術講演会 2019/06/17
  4. Oral presentation(invited, special) Solid-Liquid Reaction and Deformation of Advanced Materials Investigated by In-Situ TEM The 4th International Conference on Microstructures and Properties of Materials 2019/05/15
  5. Oral presentation(general) 超音波接合された複線ワイヤの微細組織 溶接学会春季全国大会 2019/04/18

Memberships of academic societies

  1. The Japan Society of Mechanical Engineers
  2. The Japanese Society of Microscopy
  3. The Japan Institute of Metals and Materials
  4. Japan Welding Society