| About this Abstract |
| Meeting |
2025 TMS Annual Meeting & Exhibition
|
| Symposium
|
Microstructural Evolution and Material Properties Due to Manufacturing Processes: A Symposium in Honor of Anthony Rollett
|
| Presentation Title |
Field Fluctuations Elasto-Plastic Self-Consistent Crystal Plasticity: Applications to Predicting Texture Evolution During Rolling, Recrystallization, and Drawing Processes |
| Author(s) |
Marko Knezevic |
| On-Site Speaker (Planned) |
Marko Knezevic |
| Abstract Scope |
This paper advances a mean field elasto-plastic self-consistent (EPSC) model to a higher-order model, calculating the second moments of lattice rotation rates and resulting intragranular misorientation spreads, based on the second moments of stress fields inside grains. The novel formulation is named field fluctuations (FF)-EPSC. The calculated intragranular misorientation spreads are used to conceive a grain fragmentation model to improve the predictions of deformation texture evolution and a recrystallization model to enable the predictions of recrystallization texture evolution, by modeling transition-bands and grain boundary nucleation mechanisms along with stored energy to govern recrystallized grain growth. The model further incorporates a dislocation density-based hardening law and a backstress law and is coupled with implicit finite elements (FE). The FE-FF-EPSC model is applied to simulate the sequence of processes involving rolling, recrystallization, and deep-drawing of a cylindrical cup of AA6022-T4. The simulated processing sequence demonstrates the versatility of the developed model. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Modeling and Simulation, Computational Materials Science & Engineering, |