About this Abstract |
Meeting |
2022 TMS Annual Meeting & Exhibition
|
Symposium
|
Algorithm Development in Materials Science and Engineering
|
Presentation Title |
A Combined Kinetic Monte Carlo and Phase Field Approach to Modeling Thermally Activated Dislocation Motion |
Author(s) |
Xiaoyao Peng, Enrique Martinez, Nithin Mathew, Darby Luscher, Abigail Hunter |
On-Site Speaker (Planned) |
Xiaoyao Peng |
Abstract Scope |
Phase field approaches have been recently used to model dislocation motion and interaction in many systems including FCC, BCC, HCP metals, and also multi-principal element alloys (MPEAs). While many interesting features about dislocation motion can be captured, phase field approaches applied to dislocation motion and interaction typically do not account for thermally activated motion. In this work, a kinetic Monte Carlo (kMC) scheme is integrated into a phase field dislocation dynamics (PFDD) model to account for thermal activation using Gillespie’s Stochastic Simulation Algorithm. While the implementation is general and could be applied to many different thermally activated processes, we apply the model to simulate a dislocation transmitting through an interface. |
Proceedings Inclusion? |
Planned: |
Keywords |
Computational Materials Science & Engineering, Modeling and Simulation, |