| About this Abstract |
| Meeting |
2022 TMS Annual Meeting & Exhibition
|
| Symposium
|
Mechanical Behavior and Degradation of Advanced Nuclear Fuel and Structural Materials
|
| Presentation Title |
Microstructure, Mechanical Properties, and Irradiation Response of Fe-Cr-Ni-based Multi-principal Element Alloys |
| Author(s) |
Marcus E. Parry, Cheng Sun, Wen Jiang, Boopathy Kombaiah, Colin Judge, Seongtae Kwon, Ovidiu Toader, Gary Was, Taylor Sparks |
| On-Site Speaker (Planned) |
Marcus E. Parry |
| Abstract Scope |
The implementation of advanced nuclear design concepts requires advanced structural materials to withstand the associated harsh conditions, including elevated temperatures, pressures, and radiation doses, while some designs also involve new coolant environments. Multi-principal element alloys (MPEAs) may address these challenges as they have demonstrated extraordinary strength, hardness, oxidation and corrosion resistance, thermal stability, and radiation tolerance, driving appeal as potential reactor structural materials. However, composition-microstructure-property relationships among MPEAs remain unclear, particularly relating to irradiation damage. In this study, four spark plasma sintered MPEAs in the Al-Cr-Fe-Ni-(Cu,Mn) system are investigated to clarify these relationships. At Michigan Ion Beam Laboratory, accelerator technologies were utilized to irradiate the alloys with 2.0 MeV protons at 400 ℃ to damage levels reaching 5 displacements-per-atom. Phase stability and nanomechanical response of pre- and post-irradiated specimens are examined to elucidate correlations among alloy chemistry, microstructure, and irradiation damage tolerance. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Nuclear Materials, Mechanical Properties, High-Entropy Alloys |