| About this Abstract |
| Meeting |
2023 TMS Annual Meeting & Exhibition
|
| Symposium
|
Advances in Multi-Principal Element Alloys II
|
| Presentation Title |
The Complexity of High Entropy Alloys |
| Author(s) |
Huseyin Sehitoglu, ASK Mohammed, O. Celebi |
| On-Site Speaker (Planned) |
Huseyin Sehitoglu |
| Abstract Scope |
A key development in analysis of dislocation motion in high entropy alloys is needed as negative stacking fault energy values have been obtained in atomistic simulations for many compositions. Standard formulas for determining the stacking fault width and dislocation core widths will fail under these circumstances. The talk will explain how to analyze negative stacking fault energy value effects and the partial dislocation spacing determination via an energy formulation. The model incorporates anisotropic elastic energies and the misfit energies and predicts frustrated motion of dislocation partials and their core widths. The results are significant in assessing new high entropy alloy compositions for CRSS (Critical Resolved Shear Stress) determination which is a key quantity in assessing fatigue of these class of alloys. |
| Proceedings Inclusion? |
Planned: |