| About this Abstract |
| Meeting |
2025 TMS Annual Meeting & Exhibition
|
| Symposium
|
Nanostructured Materials in Extreme Environments III
|
| Presentation Title |
Role of Interfaces in Phase Decomposition of CoCrNi Alloy |
| Author(s) |
Sakshi Bajpai, Xin Wang, Bijun Xie, Calvin Belcher, Benjamin MacDonald, Julia Ivanisenko, Yu Zhong, Penghui Cao, Enrique Lavernia, Diran Apelian |
| On-Site Speaker (Planned) |
Sakshi Bajpai |
| Abstract Scope |
In recent years, complex concentrated alloys (CCAs), which are composed of multiple principal elements in significant proportions, have attracted substantial interest due to their distinctive properties. Initially perceived as predominantly existing in single-phase structures, subsequent research has revealed that CCAs may undergo phase decomposition when subjected to intermediate temperatures over extended durations. This study focuses on investigating phase stability of equiatomic CoCrNi alloy, which is commonly recognized as a single-phase face-centered cubic (FCC) material. The alloy was subjected to severe plastic deformation, resulting in a high density of grain boundaries, and then underwent prolonged annealing at an intermediate temperature to assess its phase stability under these conditions. CALPHAD predictions guided the selection of temperature. It was observed that the FCC phase shows decomposition into a secondary phase which was detected with the help of transmission electron microscopy. Furthermore, high-throughput CALPHAD was leveraged to explain the formation of the additional phase. |
| Proceedings Inclusion? |
Planned: |