| About this Abstract |
| Meeting |
2025 TMS Annual Meeting & Exhibition
|
| Symposium
|
Advances in Multi-Principal Element Alloys IV: Mechanical Behavior
|
| Presentation Title |
Modeling Dense Alloys in Discrete Dislocation Dynamics |
| Author(s) |
Yang Li, Benjamin Anglin, Ryan Sills |
| On-Site Speaker (Planned) |
Yang Li |
| Abstract Scope |
Dense solid solutions like high-entropy alloys are difficult to model in dislocation dynamics because they exhibit numerous non-trivial behaviors that are stress, temperature, and character-angle dependent. For example, the average dislocation mobility in a dense solid solution is line-length-dependent when the line length is below a temperature and stress dependent critical length. In this talk, we present a dislocation mobility model which captures the physics of dislocation motion in dense solid solutions and can be adapted to any material system. The model utilizes a spatially varying friction stress field generated with user-specified power spectral density. After non-dimensionalizing the problem, we perform a comprehensive set of discrete dislocation dynamics mobility simulations to quantify the dislocation mobility with different power spectral density distributions. These results provide a framework for designing a friction field to model any dense solid solution system. |
| Proceedings Inclusion? |
Planned: |