| About this Abstract |
| Meeting |
2021 TMS Annual Meeting & Exhibition
|
| Symposium
|
Mechanical Behavior of Nuclear Reactor Components
|
| Presentation Title |
Irradiation Resistance in Several Multi-principal Element Alloys |
| Author(s) |
Yanqing Su |
| On-Site Speaker (Planned) |
Yanqing Su |
| Abstract Scope |
Multi-principal element alloys (MPEAs) are alloys that form solid solution phases and consist of three or more principal metallic elements. They are considered to have intermediate structural and chemical complexities between single-element regular metals and multi-element disordered metallic glasses. Due to their unique microstructures and chemical compositions, MPEAs exhibit excellent mechanical properties such as high strength at elevated temperatures and excellent irradiation resistance. Since radiation damage is caused by radiation-induced defects and their evolution such as voids and dislocation loops, the primary radiation damage process is an atomic-level material phenomenon. Here, the generation and evolution of radiation-induced point defects in several MPEAs are characterized by atomistic simulations. Results show that the numbers of residual defects after cascade and evolution in these MPEAs are smaller than those in their constituent pure metals. The origin of the higher radiation damage tolerance in MPEAs is discussed. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Computational Materials Science & Engineering, Nuclear Materials, High-Entropy Alloys |