| About this Abstract |
| Meeting |
2025 TMS Annual Meeting & Exhibition
|
| Symposium
|
Friction Stir Welding and Processing XIII
|
| Presentation Title |
A Discontinuous Dynamic Recrystallization Model for Predicting Grain Features During Friction Stir Processing |
| Author(s) |
Prachi Sharma, Deepak Dhariwal, Amit Arora |
| On-Site Speaker (Planned) |
Prachi Sharma |
| Abstract Scope |
Friction Stir Welding (FSW) and processing induce severe plastic deformation in materials. The resulting high strain and elevated temperatures lead to dynamic recrystallization and grain growth, which determine the final properties of the processed materials. This study presents an analytical framework based on Discontinuous Dynamic Recrystallization (DDRX) principles, accounting for plastic deformation, nucleation, and growth. The DDRX model is integrated with a Heat Transfer and Material Flow (HTMF) model for FSW, using computed strain rates and temperatures as input parameters. The HTMF model is experimentally validated before use of the predicted values in DDRX model. The DDRX model predicts grain features such as average grain size, dislocation density, Taylor's factor, new grain formation, and grain size distribution. The predicted grain sizes were compared with experimentally measured values in samples processed under identical conditions, demonstrating 97% accuracy. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Computational Materials Science & Engineering, Modeling and Simulation, Copper / Nickel / Cobalt |