About this Abstract |
Meeting |
2025 TMS Annual Meeting & Exhibition
|
Symposium
|
Chemistry and Physics of Interfaces
|
Presentation Title |
Grain Boundary Segregation and Solute Drag in Multicomponent Alloys |
Author(s) |
Milad Taghizadeh, Fadi Abdeljawad |
On-Site Speaker (Planned) |
Milad Taghizadeh |
Abstract Scope |
In multicomponent alloys, even minute amounts of solutes at Grain boundaries (GBs) greatly affect boundary migration. Of particular interest is GB solute drag, which results when segregated alloying elements exert a resistive force on migrating GBs hindering their motion. While multicomponent alloys have been the subject of active research, GB segregation and solute drag remain poorly understood in these systems. Herein, we present a model of GB solute drag in multicomponent alloys that incorporates bulk and GB thermodynamics, accounting for the interaction of various elemental species with GBs. Using ternary alloys as a model system, we investigate multi-element GB segregation and solute drag. Our computational studies show a variety of segregation behaviors influenced by the interactions of elemental species within the GB region. Parametric studies are conducted to identify conditions where solute drag is dominant. Our model provides a framework for using GB segregation to engineer alloys with tailored microstructures. |
Proceedings Inclusion? |
Planned: |
Keywords |
High-Entropy Alloys, Modeling and Simulation, Other |