| About this Abstract |
| Meeting |
2025 TMS Annual Meeting & Exhibition
|
| Symposium
|
Meeting Materials Challenges for the Future of Fusion Energy
|
| Presentation Title |
Progress and Issues of R&D on Fusion DEMO Structural Materials in Japan |
| Author(s) |
Takashi Nozawa, Motoki Nakajima, Dai Hamaguchi, Taichiro Kato, Yasuhiro Aoki, Hidetoshi Fujii, Yoshiyuki Watanabe, Masami Ando, Hiroyasu Tanigawa |
| On-Site Speaker (Planned) |
Takashi Nozawa |
| Abstract Scope |
In addition to reduced activation ferritic/martensitic steel (RAFM), which is the leading structural material, copper alloys as divertor materials are being developed for the Japanese fusion DEMO with international collaborations such as Japan-EU Broader Approach activities and Japan-US HFIR collaboration more than a decade. In this paper, the latest findings and issues are presented, focusing on the environmental effects (magnetic field, corrosion and irradiation effects) of the Japanese RAFM, F82H and CuCrZr alloys. In addition, the study will discuss the potential of advanced joining techniques such as linear friction welding, which is being developed to minimize discontinuities subject to irradiation, while advancing our understanding of weld behavior in F82H. Furthermore, understanding micro-macro correlations is necessary to bridge microscopic irradiation effects to macroscopic properties, which will be addressed through modeling and micro-testing techniques. Initial findings on micro- and meso-scale issues will be summarized with the goal of enhancing overall understanding. |
| Proceedings Inclusion? |
Planned: |