About this Abstract |
| Meeting |
2026 TMS Annual Meeting & Exhibition
|
| Symposium
|
Developments in Advanced Nuclear Structural Materials
|
| Presentation Title |
Ion Irradiation and Void Formation in BCC-L21 and BCC-B2 Compositionally Complex Alloys |
| Author(s) |
Nick Crnkovich, Abe Burleigh, Kavin Ammigan, Anagh Dutta, Sebastian Kube, Izabela Szlufarska, Adrien Couet |
| On-Site Speaker (Planned) |
Nick Crnkovich |
| Abstract Scope |
Refractory superalloys, containing an ordered precipitate phase in a disordered matrix, like nickel superalloys, are of significant interest for advanced nuclear applications requiring higher temperatures and radiation tolerance. The coherent interfaces between the phases are assumed to act as point defect recombination centers, enhancing radiation resistance. In this work, a low-density alloy series (~6 g/cm3) based on the CrMnV system was developed into a Al15Co4Cr20Mn20Ti6V35 alloy with a BCC-L21 dual phase structure, irradiated up to 560 dpa with heavy ions, characterized, and compared with a precipitate-free version and less complex alloys. While the precipitate-free CCA saw no void formation or measurable change in hardness, the BCC-L21 alloys saw increasing void swelling with an increasing volume fraction of L21 phase. This phenomenon has also been explored for comparison in a model NbMo-RuTi BCC-B2 system. The correlation between void swelling and the ordered phases, which is counter to expectations, is further examined. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
High-Entropy Alloys, Nuclear Materials, Characterization |