| About this Abstract |
| Meeting |
2023 TMS Annual Meeting & Exhibition
|
| Symposium
|
Advances in Multi-Principal Element Alloys II
|
| Presentation Title |
J-34: Grain Boundary Segregation and Solute Drag in Multicomponent Alloys |
| Author(s) |
Milad Taghizadeh, Malek Alkayyali, Fadi Abdeljawad |
| On-Site Speaker (Planned) |
Milad Taghizadeh |
| Abstract Scope |
Controlling grain boundary (GB) dynamics in polycrystalline materials is of great significance since it can lead to the fine-tuning of the mechanical and physical properties through microstructure control. Recently, GB segregation emerged as a technique to mitigate GB migration and stabilize nanocrystalline grain microstructures. However, GB segregation and dynamic solute drag remain poorly understood in multi-component alloys. Herein, we present a model of GB solute drag that accounts for the interactions of various elemental species with migrating GBs in multi-component alloys and captures complex solute-solute interactions in such systems. Ternary alloys are employed here as a canonical demonstration of multi-component effects. Parametric studies are performed to reveal regimes in alloy design space where solute drag effect is maximized. Several segregation effects are demonstrated including competitive and synergistic segregation and induced de-segregation. Our modeling approach provides avenues to account for solute-defect interactions in alloy design and discovery efforts. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Computational Materials Science & Engineering, Modeling and Simulation, Other |