About this Abstract |
| Meeting |
2025 TMS Annual Meeting & Exhibition
|
| Symposium
|
Meeting Materials Challenges for the Future of Fusion Energy
|
| Presentation Title |
Synergistic Study of Neutron Irradiation and Hydrogen Exposure on Tungsten |
| Author(s) |
Weicheng Zhong, Yuji Hatano, Takaaki Koyanagi, Hanns Gietl, Chase Taylor, Josina Geringer, Takeshi Toyama, Yutai Katoh |
| On-Site Speaker (Planned) |
Weicheng Zhong |
| Abstract Scope |
Plasma facing materials (PFMs) in fusion reactors are exposed to extreme and complex environments, including intense neutron irradiation and interactions with plasma (hydrogen isotopes and helium). Previous studies on metal materials have suggested a retardation effect of hydrogen on vacancy migration. However, there is limited knowledge on how the presence of hydrogen trapped in PFM affects defects formation, key properties, and microstructure. Evaluating synergistic effect of neutron irradiation and hydrogen exposure will be necessary to assess the performance of PFMs. A novel irradiation design previously exposed PFMs and vanadium hydride in HFIR to generate hydrogen pressure in the presence of neutron irradiation. We will show the success of this methodology and the hydrogen absorption by tungsten during neutron irradiation. The discussion will be focused on the synergistic effect of hydrogen uptake in the presence neutron irradiation on cavity formation, hydrogen retention, and microstructure in tungsten. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Nuclear Materials, Environmental Effects, |