About this Abstract |
| Meeting |
2026 TMS Annual Meeting & Exhibition
|
| Symposium
|
Developments in Advanced Nuclear Structural Materials
|
| Presentation Title |
Composition–Microstructure–Irradiation Interactions in Additively Manufactured CoCrFeNi-Based High-Entropy Alloys |
| Author(s) |
Jiaxuan Li, Wei-Ying Chen, Meimei Li, Shunyu Liu |
| On-Site Speaker (Planned) |
Shunyu Liu |
| Abstract Scope |
To elucidate how elemental composition and microstructural complexity influence the ion irradiation behavior of CoCrFeNi-based high-entropy alloys, equiatomic CoCrFeNi, CoCrFeNiMn, CoCrFeNiMo, and CoCrFeNiCu alloys were fabricated via laser-directed energy deposition. The specimens were irradiated with 5 MeV NiČ⁺ ions up to 10 dpa at various temperatures. Transmission electron microscopy (TEM) was employed to systematically characterize the evolution of irradiation-induced defects, with an emphasis on grain characteristics, elemental segregation, precipitate stability, and the ordering of secondary phases. Special attention was given to the size and density of voids and dislocation loops, radiation-induced elemental redistribution, and resulting changes in mechanical properties. The findings highlight the coupled effects of composition and microstructure on defect formation and evolution, offering valuable insights for the design of radiation-tolerant HEAs via additive manufacturing for nuclear engineering. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Additive Manufacturing, Characterization, Nuclear Materials |