| About this Abstract |
| Meeting |
2023 TMS Annual Meeting & Exhibition
|
| Symposium
|
Phase Stability in Extreme Environments
|
| Presentation Title |
Exploring Temperature and Radiation Damage Induced Phase Transformations in Ta-V-Ti (W,Cr,Fe) Multicomponent Alloys |
| Author(s) |
Amy Sarah Gandy, Christina Hofer, Paul Bagot, Michael Moody, Dhinisaben Patel, Hamed Shahmir, David Armstrong, Junliang Liu, Alexander Carruthers, Ed Pickering, Russell Goodall, Shavkat Akhmadaliev |
| On-Site Speaker (Planned) |
Amy Sarah Gandy |
| Abstract Scope |
Materials for fusion will operate in the most extreme environment on Earth. Specifically, the plasma-facing materials will experience levels of neutron irradiation orders of magnitude greater than in current fission reactors and fluctuating temperatures up to 1300 °C. Some multicomponent alloys have been reported to offer excellent high temperature phase stability and radiation damage resistance but will undergo neutron-induced transmutations becoming intermediate/high-level radioactive waste. To address this issue, we have developed reduced-activation multicomponent alloys. In this contribution, we report on the high temperature thermal stability and low temperature-induced phase transformations of these alloys, as determined by XRD, SEM and TEM. Selected samples were implanted at 500 °C with 2 MeV Ti ions and characterised using atom probe tomography to explore the impact of secondary phase formation on radiation damage resistance. In this contribution, APT results will also be presented and discussed in terms of defect formation and evolution. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Nuclear Materials, High-Entropy Alloys, Phase Transformations |