| About this Abstract |
| Meeting |
2023 TMS Annual Meeting & Exhibition
|
| Symposium
|
Phase Stability in Extreme Environments
|
| Presentation Title |
The Impact of Short-order Order on Deformation Phase Transformation and Microstructure Evolution in Multi-principal Element Alloys |
| Author(s) |
Hangman Chen, Mingjie Xu, Xin Wang, Enrique Lavernia, Xiaoqing Pan, Penghui Cao |
| On-Site Speaker (Planned) |
Penghui Cao |
| Abstract Scope |
Mechanistic prediction of mechanical behaviors of materials requires a fundamental understanding of the underpinning mechanisms. We will present our findings of deformation processes at atomistic to nanoscopic length scales in multi-principal element alloys, using multiscale atomistic simulations coupled with in-situ testing and characterization. The results elucidate the deformation mechanisms, phase transformation, and nano-/micro-structure evolution in CrCoNi, underlying its extraordinary mechanical performance. Specifically, we integrate atomistic modeling, in-situ SEM, and TEM characterization to understand the role of short-range order on dislocation slip, twinning, and martensitic transformation. The microstructure and local strain evolution resulting from these deformation processes be discussed. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
High-Entropy Alloys, Phase Transformations, |