| About this Abstract |
| Meeting |
2022 TMS Annual Meeting & Exhibition
|
| Symposium
|
Mechanical Behavior and Degradation of Advanced Nuclear Fuel and Structural Materials
|
| Presentation Title |
A Case Study on Radiation-induced Degradation of High-entropy Alloys |
| Author(s) |
Matheus Araujo Tunes, Osman El-Atwani, Stuart Andrew Maloy |
| On-Site Speaker (Planned) |
Matheus Araujo Tunes |
| Abstract Scope |
Significant progress has been made over the past years to understand radiation effects in novel high-entropy alloys (HEAs), that are now considered candidate materials for application in future nuclear reactors. Up-to-date the great majority of reports indicate that HEAs have superior radiation tolerance compared with conventional metallic alloys, and degradation mechanisms such as chemical instabilities, radiation-induced segregation and precipitation (RIS and RIP), and matrix phase decomposition at high-temperatures and large irradiation doses are largely unexplored fields of research. The (limited) literature on radiation-induced degradation (RID) of HEAs will be reviewed. A case study will focus in the RID of two distinct HEAs – the FeCrMnNi and CoCrCuFeNi – upon exposure to both high radiation doses (50-200 dpa) using light- and heavy-ions at high-temperatures. The use of in situ TEM methods is herein proposed as a methodology to fast-screening and identify potentially unstable HEAs for application in extreme environments. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Nuclear Materials, Thin Films and Interfaces, High-Entropy Alloys |