About this Abstract |
| Meeting |
2023 TMS Annual Meeting & Exhibition
|
| Symposium
|
Deformation-induced Microstructural Evolution during Solid Phase Processing: Experimental and Computational Studies
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| Presentation Title |
Impact of the Plastic Deformation Microstructure in Metals on the Kinetics of Recrystallization: A Phase-field Study |
| Author(s) |
Ahmed Hamed, Sreekar Rayaprolu, Grethe Winther, Anter El-Azab |
| On-Site Speaker (Planned) |
Sreekar Rayaprolu |
| Abstract Scope |
We investigate the impact of deformation-induced dislocation structure on the kinetics of recrystallization in metals using the phase-field approach. We specifically focus on the role of dislocation cell boundaries. The free energy formulation of the phase-field model accounts for the heterogeneity of the microstructure by assigning localized energy to the resulting dislocation microstructure realizations generated from experimental data. These microstructure realizations are created using the universal scaling laws for the spacing and the misorientation angles of both the geometrically necessary and incidental dislocation boundaries. The resulting free energy is used into the phase field model, which is solved using the finite element method. The results showed that, in agreement with experiment, the morphology of recrystallization front exhibits protrusions and retrusions. By resolving the subgrain structure, the presented algorithm paves the way for developing predictive kinetic models that fully account for the deformed state of recrystallizing metals. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Computational Materials Science & Engineering, Modeling and Simulation, Phase Transformations |