| About this Abstract |
| Meeting |
2024 TMS Annual Meeting & Exhibition
|
| Symposium
|
Environmental Degradation of Multiple Principal Component Materials
|
| Presentation Title |
Advanced Studies of Radiation Damage in Compositionally Complex Alloys |
| Author(s) |
Nathan Curtis, Michael Moorehead, Mukesh Bachhav, Phalgun Nelaturu, Junliang Liu, Daniel Murray, Bao-Phong Nguyen, Nate Eklof, Dan Thoma, Haiming Wen, Dane Morgan, Adrien Couet |
| On-Site Speaker (Planned) |
Nathan Curtis |
| Abstract Scope |
Compositionally Complex Alloys (CCAs) have sparked interest in the nuclear community as candidate structural materials for their observed resistance to microstructural damage under irradiation. This, however, has only been seen through limited heavy-ion irradiation studies, and there are no reported neutron irradiations of CCAs at reactor-relevant conditions. To address both knowledge gaps a high-throughput irradiation campaign on additively manufactured CCAs to >100 displacements per atom (dpa), and an analysis of CCAs neutron-irradiated at Idaho National Lab’s Advanced Test Reactor up to 6.5 dpa at 395 and 579 °C have been performed. Hardening and void swelling of high-throughput irradiated samples were measured via automated nanoindentation and machine learning assisted analysis of cross-sectional scanning electron microscopy images. Neutron irradiated samples were analyzed for extended defect formation (precipitation, voids, and dislocation loop buildup) and short-range ordering with transmission electron microscopy and atom probe tomography. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Nuclear Materials, High-Entropy Alloys, Additive Manufacturing |