About this Abstract |
| Meeting |
2026 TMS Annual Meeting & Exhibition
|
| Symposium
|
Local Chemical Ordering and Its Impact on Mechanical Behaviors, Radiation Damage, and Corrosion
|
| Presentation Title |
Probing Short-Range Order in Concentrated Solutions via Nonlinear Ultrasonic Wave Propagation |
| Author(s) |
William Keaty, Matthew Daly |
| On-Site Speaker (Planned) |
William Keaty |
| Abstract Scope |
Nonlinear ultrasonic wave theory leverages higher order elastic constants (HOEC)s to capture anharmonic elasticity, with behavior well understood for pure materials. In the case of concentrated solutions, the presence of short-range ordering (SRO) alters interatomic interactions locally, which modifies HOECs when compared to random arrangement. Direct measurement of SRO remains experimentally challenging, which raises an intriguing question: Can short-range order in HEAs be indirectly quantified by measuring its influence on nonlinear wave propagation? Here we investigate this question through molecular dynamics simulations of various material systems. Ultrasonic waves are transmitted through a series of model systems with varying degrees of SRO. Analysis of the resulting waveforms yields an acoustic nonlinearity parameter associated with each system, and relationships between SRO and nonlinearity are investigated. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
High-Entropy Alloys, Characterization, Modeling and Simulation |