About this Abstract |
| Meeting |
2026 TMS Annual Meeting & Exhibition
|
| Symposium
|
Advances in Multi-Principal Element Alloys V: Mechanical Behavior
|
| Presentation Title |
Advances in Computational and Experimental Approaches to Chemical Short-Range Order Formation in Multi-Principal Element Alloys |
| Author(s) |
Mohsen Asle Zaeem, Peter Liaw |
| On-Site Speaker (Planned) |
Mohsen Asle Zaeem |
| Abstract Scope |
Chemical short-range order (CSRO) in Multi-Principal Element Alloys (MPEAs) arises from non-random atomic arrangements within the first few neighbor shells and significantly influences yield strength, work hardening, diffusion kinetics, and phase stability. Understanding and quantifying CSRO require synergistic computational and experimental approaches. This talk reviews recent advances in methodologies used to study CSRO in MPEAs. First-principles calculations evaluate mixing enthalpies and local lattice distortions in large supercells, while atomistic simulations enable high-throughput exploration of ordering tendencies. Analytical frameworks, including the Cluster Variation Method, provide insight into temperature-dependent ordering behavior. Complementary experimental techniques, such as high-resolution pair distribution function analysis, in situ synchrotron diffraction, three-dimensional atom probe tomography, and resistivity measurements, validate predicted local ordering patterns. The capabilities and limitations of these approaches are critically assessed, highlighting current challenges and future directions in understanding CSRO in MPEAs. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
High-Entropy Alloys, Modeling and Simulation, Mechanical Properties |