About this Abstract |
Meeting |
2021 TMS Annual Meeting & Exhibition
|
Symposium
|
High Entropy Alloys IX: Structures and Modeling
|
Presentation Title |
Phase-Field Dislocation Dynamics Modeling of Refractory Multi-Principal Element Alloys |
Author(s) |
Lauren Fey, Abigail Hunter, Irene J. Beyerlein |
On-Site Speaker (Planned) |
Lauren Fey |
Abstract Scope |
Refractory multi-principal element alloys are of great interest to the materials community due to their potential for high-temperature applications. However, there is still debate over the dominant deformation and strengthening mechanisms. We use phase field dislocation dynamics to study the behavior dislocations within these alloys, accounting for varying dislocation core structures and differences between screw and edge mobility. We also consider cross-slip and the dislocation glide on higher order crystallographic planes. The model is used to study both dislocation nucleation and propagation within several refractory MPEAs, and the results are compared with experimental work in the same alloys. |
Proceedings Inclusion? |
Planned: TMS Journal: Metallurgical and Materials Transactions |
Keywords |
High-Entropy Alloys, Computational Materials Science & Engineering, |