| About this Abstract |
| Meeting |
2020 TMS Annual Meeting & Exhibition
|
| Symposium
|
Mechanical Response of Materials Investigated through Novel In-situ Experiments and Modeling
|
| Presentation Title |
Microstructure and Micromechanical Field Evolution During Dynamic Recrystallization: A Crystal Plasticity-phase Field Simulation Study |
| Author(s) |
Supriyo Chakraborty, Chaitali Patil, Yunzhi Wang, Stephen Niezgoda |
| On-Site Speaker (Planned) |
Supriyo Chakraborty |
| Abstract Scope |
To study the evolution of microstructure and micromechanical fields during hot deformation of metals a 3D full field model for dynamic recrystallization has been proposed. For this purpose, a fast Fourier transform based elasto-viscoplastic (EVP-FFT) crystal plasticity model has been coupled with a phase field model. To capture the underlying physical mechanisms of high temperature deformation a dislocation density based constitutive model has been used. Simulation results successfully captures the effect of temperature, strain rate and initial grain size on stress-strain behavior and grain size evolution during dynamic recrystallization. Decrease in Local stress and elastic strain have been observed inside the recrystallized grains. A jump in local strain rate has been observed inside the recrystallized grains which decreases rapidly on further deformation. Additionally, our simulation results reveal that the rate of dislocation accumulation is much faster inside the recrystallized grains in comparison to the deformed matrix. |
| Proceedings Inclusion? |
Planned: Supplemental Proceedings volume |