| About this Abstract |
| Meeting |
NUMISHEET 2022: The 12th International Conference on Numerical Simulation of 3D Sheet Metal Forming Processes
|
| Symposium
|
NUMISHEET 2022
|
| Presentation Title |
The Effect of Twinning/Detwinning on the Evolution of Texture and Microstructure under Cyclic Loading of AZ31 Magnesium Alloy |
| Author(s) |
Alena Gracheva, Waqas Muhammad, Jaspreet Singh Nagra, Abhijit Brahme, Julie Levesque, Kaan A. Inal |
| On-Site Speaker (Planned) |
Kaan A. Inal |
| Abstract Scope |
Magnesium alloys attract significant attention by the automotive industry due to their lightest weight structure and high specific strength. However, the low formability of magnesium alloys at room temperature restricts their usage to fabricate vehicle components with desirable shape. Poor room temperature formability is a result of the limited number of active slip systems to accommodate plastic deformation. Besides crystallographic slip, twinning and detwinning mechanisms contribute considerably to the deformation behavior of Mg alloys. Hence, understanding the linkages between deformation modes, texture, microstructure evolution and mechanical response can significantly improve strategies for part optimization and reducing the time-to-market of manufacturing processes. In these regards, a rate-tangent crystal plasticity based fast Fourier transform (RTCP-FFT) framework is used in the present work to model texture and microstructure evolution in AZ31 magnesium alloy sheet. The new rate tangent-fast Fourier transform-based elasto-viscoplastic crystal plasticity constitutive approach computes macro stress-strain response, 3D micromechanical fields, volume fraction of twinning, texture and 3D microstructure evolution. The model is used to investigate the microstructure effect of neighboring grains on twin nucleation and propagation in 3D microstructures, and the role of detwinning process on both texture and microstructure evolution during cyclic loading in AZ31 Mg alloy |
| Proceedings Inclusion? |
Definite: At-meeting proceedings |