| About this Abstract |
| Meeting |
2025 TMS Annual Meeting & Exhibition
|
| Symposium
|
Chemistry and Physics of Interfaces
|
| Presentation Title |
Dislocation Pattern and Motion Mechanisms of Twist Grain Boundaries in High-Entropy Alloys |
| Author(s) |
Wanjuan Zou, Diran Apelian, Timothy J. Rupert, Xiaoqing Pan, Penghui Cao |
| On-Site Speaker (Planned) |
Wanjuan Zou |
| Abstract Scope |
Low-angle twist grain boundaries (GBs) are composed of arrays of screw dislocations, presenting a unique framework for examining GB properties from dislocation. In high-entropy alloys (HEAs), the local complex chemical environments inevitably impact the structure and motion behavior of GB. In this study, we will present atomistic structures of twisted GBs across various crystallographic planes in NbMoTaW. The dislocation networks and patterns are analyzed concerning different crystallographic orientations and chemical complexities. Under shear stress, we explore the collective gliding mechanisms of GBs and their relationship to dislocation slip. These findings advance our fundamental understanding of GB dynamics, offering valuable insights for tuning GB property via microstructural engineering. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
High-Entropy Alloys, Modeling and Simulation, Other |