About this Abstract |
Meeting |
2025 TMS Annual Meeting & Exhibition
|
Symposium
|
Computational Thermodynamics and Kinetics
|
Presentation Title |
Computational Studies of Grain Boundary Segregation and Solute Drag in Multicomponent Alloys |
Author(s) |
Fadi Abdeljawad |
On-Site Speaker (Planned) |
Fadi Abdeljawad |
Abstract Scope |
High entropy alloys (HEAs) are a class of materials systems that are composed of multiple elemental species in similar compositions. Recent experimental studies revealed sluggish grain growth in HEAs and attributed it to segregation of elemental species to grain boundaries (GBs) and accompanying solute drag. However, GB dynamic solute drag in multicomponent alloys remains largely unexplored. Herein, we present a model of GB segregation and solute drag in HEAs that accounts for bulk thermodynamics and various mass transport mechanisms, and it captures the interaction of various elemental species with GBs. We consider ternary alloys as a model system, where we reveal solute drag profiles that are sensitively dependent on alloy-alloy interactions within the GB. Our approach provides avenues to employ GB segregation as a strategy to design HEAs with tailored microstructures and chemistries. |
Proceedings Inclusion? |
Planned: |
Keywords |
High-Entropy Alloys, Computational Materials Science & Engineering, Thin Films and Interfaces |