| Abstract Scope |
Refractory compositionally complex alloys (RCCAs) exhibit exceptional high-temperature yield strength and hold significant promise for surpassing conventional superalloys. However, the fundamental mechanisms governing their deformation remain incompletely understood. Here, we employ atomistic simulations to investigate the properties of edge and screw dislocations in representative RCCAs. We systematically analyze key features, including thermodynamic stability, Peierls stress, Peierls barriers, and the saddle-point pathways for dislocation motion obtained using SEAKMC. These results provide atomistic insight into dislocation behavior in RCCAs and offer a mechanistic foundation for their future design and optimization in high-temperature structural applications. |