| About this Abstract |
| Meeting |
TMS Specialty Congress 2025
|
| Symposium
|
The 7th International Congress on 3D Materials Science (3DMS 2025)
|
| Presentation Title |
Dislocation Microstructure Considerations in Modeling Recrystallization |
| Author(s) |
Ahmed Hamed, Sreekar Rayaprolu, Grethe Winther, Anter El-Azab, Khaled N. SharafEldin |
| On-Site Speaker (Planned) |
Anter El-Azab |
| Abstract Scope |
The sensitivity of static recrystallization kinetics to the pre-existing dislocation microstructure is a well-known empirical fact. We present a phase field model of recrystallization that takes the initial dislocation microstructure into consideration in fixing the thermodynamics and kinetic governing the growth of the recrystallized embryos. The model represents the dislocation microstructure in terms of geometrically necessary boundaries and incidental dislocation boundaries and takes as input microstructure realizations using the universal scaling laws for the spacing and the misorientation angles of these boundaries. The resulting free energy is used into an Allen-Cahn based model of recrystallization kinetics. The results show that, in agreement with experiment, the morphology of recrystallization front exhibits protrusions and retrusions, and that the deformation level and, hence, the initial microstructure play a critical role in determining the final grain structure. Building on these results, a new perspective for modeling recrystallization with a higher fidelity will be presented. |
| Proceedings Inclusion? |
Undecided |