KEITA MARUMOTO

Last Updated :2026/03/03

Affiliations, Positions
Graduate School of Advanced Science and Engineering, Assistant Professor
E-mail
marukhiroshima-u.ac.jp
Other Contact Details
1-4-1 Kagamiyama, Higashi-Hiroshima, Hiroshima 739-8527, Japan, Japan
TEL : (+81)82-424-2365 FAX : (+81)
Self-introduction
My research focuses on the development of new processes and automation technologies using image processing for welding and additive manufacturing. I am also conducting research on welding metallurgy.

Basic Information

Educational Backgrounds

  • Hiroshima university, Graduate School of Advanced Science and Engineering, Japan, 2020/04, 2022/03
  • Hiroshima university, Graduate School of Advanced Science and Engineering, Japan, 2022/04, 2025/03

Academic Degrees

  • Hiroshima University
  • Hiroshima University

Research Fields

  • Engineering;Material engineering;Material processing / Microstructural control engineering

Research Keywords

  • Welding, Additive manufacturing, Hot-wire, Image processing

Affiliated Academic Societies

Educational Activity

Course in Charge

  1. 2025, Undergraduate Education, Second Semester, Experiments in Mechanical Engineering II

Research Activities

Academic Papers

  1. Effect of the hot-wire laser irradiation method and a Ni-based alloy middle layer on mechanical properties and microstructure in additive manufacturing of WC–Co cemented carbide, International Journal of Refractory Metals and Hard Materials, 136, 20260401
  2. High-Magnification In Situ Observation of Welding Solidification, Metals, 15(11), 20251101
  3. In-plane constraint and relaxation type technology for the evaluation of solidification cracking susceptibility, JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T, 38, 5263-5273, 2025
    Link to Paper Search Results by DOI
  4. Weld Formation and Characteristics of Hot-Wire Laser Welding in Aluminum Alloy Narrow-Gap Joints, METALS, 15(7), 20250718
    Link to Paper Search Results by DOI
  5. Effect of Hardness Distribution on Strength of Narrow-Gap Hot-Wire Laser-Welded Joint for High-Tensile Strength Steel, Materials, 18(2), 20250101
  6. Development of automation and monitoring methods for narrow-gap hot-wire laser welding using camera images, Welding in the World, 69(1), 269-280, 20250101
  7. Development of Hot-Wire Laser Additive Manufacturing for Dissimilar Materials of Stainless Steel/Aluminum Alloys, Journal of Manufacturing and Materials Processing, 8(3), 20240601
  8. Selection of Welding Conditions for Achieving Both a High Efficiency and Low Heat Input for Hot-Wire Gas Metal Arc Welding, Journal of Manufacturing and Materials Processing, 8(2), 20240401
  9. Bead shape control in high-speed fillet welding using hot-wire GMA laser hybrid welding technology, Welding in the World, 67(5), 1259-1266, 20230501
  10. Development of Hot-wire Laser Narrow-gap Multilayer Welding Technology, Yosetsu Gakkai Shi/Journal of the Japan Welding Society, 92(7), 458-461, 20230101
  11. Effect of Bead Shape on Solidification Cracking during Hot-wire Laser Welding on Narrow-gap Joint of Ni-base Alloy, Yosetsu Gakkai Ronbunshu/Quarterly Journal of the Japan Welding Society, 42(2), 89-96, 20240101

Invited Lecture, Oral Presentation, Poster Presentation

  1. Hot-wire laser additive manufacturing technology for dissimilar materials of stainless steel / aluminum alloys, Keita Marumoto, Daiji Morita, Motomichi Yamamoto, LAMP2025, Without Invitation, English
  2. Microstructure and mechanical properties of heat-treated high-strength aluminum alloys fabricated by the hot-wire laser method, K. Marumoto, K. Kodama, T. Horai, D. Morita, M. Yamamoto, The 78th International Institute of Welding (IIW) Annual Assembly, 2025/06/25, Without Invitation, English