About this Abstract |
| Meeting |
2025 TMS Annual Meeting & Exhibition
|
| Symposium
|
Meeting Materials Challenges for the Future of Fusion Energy
|
| Presentation Title |
The Role of Hydrogen Co-Injection on the Cavity Microstructure of Triple Ion Irradiated F82H-IEA |
| Author(s) |
Logan Nicholas Clowers, Gary S. Was |
| On-Site Speaker (Planned) |
Logan Nicholas Clowers |
| Abstract Scope |
The effects of transmutation gases H/He on the evolution of cavity microstructure was investigated on the RAFM steel F82H-IEA. Dual beam (Fe2++He2+) and triple beam (Fe2++He2++H+) ion irradiations were conducted while varying temperature (400°C to 600°C), damage level (5 to 150 dpa), and gas injection rate (0/10, 40/10, 80/10 appm/dpa of H/He) to determine the synergistic effects between H, He and radiation damage on the microstructure. Post-irradiation characterization of cavity size, number density and swelling was performed on cross-sectional FIB lamella via TEM with 2D EELS maps taken around cavities to determine the location and quantity of H and He at these features. Using these measurements, the defect rate theory-based critical bubble model was used to explain the role of hydrogen in enhancing cavity nucleation and growth. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Nuclear Materials, Characterization, Iron and Steel |