| About this Abstract |
| Meeting |
2025 TMS Annual Meeting & Exhibition
|
| Symposium
|
Local Chemical Ordering and Its Impact on Mechanical Behaviors, Radiation Damage, and Corrosion
|
| Presentation Title |
Tuning chemical short-range order in metallic alloys via thermomechanical processing |
| Author(s) |
Mahmudul Islam, Killian Sheriff, Yifan Cao, Rodrigo Freitas |
| On-Site Speaker (Planned) |
Mahmudul Islam |
| Abstract Scope |
Manufacturing of metallic alloys often involves thermomechanical processing, which modifies the microstructure and, consequently, the material properties. Recent research has highlighted the role of short-range order (SRO) on the properties of high-entropy alloys, but the feasibility of tuning their SRO via thermomechanical processing remains unclear. Here, we employ high-fidelity large-scale atomistic simulations of dislocation-mediated plastic deformation combined with information theory and machine-learning to investigate the evolution of SRO during plastic deformation. Our findings reveal that the interaction between dislocations and local chemical configurations can induce nonequilibrium SRO, with strain rate and temperature being critical driving parameters governing the evolution and final SRO. Our work suggests that controlled thermomechanical processing can be leveraged to tune SRO in alloys, providing pathways to achieve a broad spectrum of nonequilibrium SRO states beyond the equilibrium design space of alloys. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
High-Entropy Alloys, Computational Materials Science & Engineering, Modeling and Simulation |