About this Abstract |
Meeting |
2024 TMS Annual Meeting & Exhibition
|
Symposium
|
Local Ordering in Materials and Its Impacts on Mechanical Behaviors, Radiation Damage, and Corrosion
|
Presentation Title |
Dislocations in Complex Alloys |
Author(s) |
William A. Curtin, Terrence Moran, Bastien Aymon, Xin Liu |
On-Site Speaker (Planned) |
William A. Curtin |
Abstract Scope |
Dislocations in alloys with random solute distributions, short-range order, or clustering have a range of competing length and energy scales that overall establish energy barriers to dislocation motion. The flow behavior then depends on many different underlying material parameters and it becomes difficult to formulate theories that include all these factors. Here, to guide development of theories, we show how a Peierls-Nabarro/Phase-Field (PN/PF) model can enable efficient and accurate parametric exploration of dislocation behavior as a function of controllable material parameters including “solute misfit” and short-range order effects. Applications to model HEAs are then presented and discussed in the context of current theories. |
Proceedings Inclusion? |
Planned: |
Keywords |
High-Entropy Alloys, Mechanical Properties, Computational Materials Science & Engineering |