| About this Abstract |
| Meeting |
2025 TMS Annual Meeting & Exhibition
|
| Symposium
|
Magnesium Technology 2025
|
| Presentation Title |
Crystal plasticity analysis of extension twin activity in Mg-7Y alloy using PRISMS-Plasticity framework |
| Author(s) |
Chaitali Patil, Qianying Shi, Veera Sundararaghavan, John Allison |
| On-Site Speaker (Planned) |
Chaitali Patil |
| Abstract Scope |
As twinning constitutes one of the important deformation mechanisms for Mg alloys, understanding the twinning activity and its influence on the deformation behavior is important. During uniaxial compression of Mg-7Y alloy, we observed the presence of {112 ̅1} extension twins along with the commonly observed {101 ̅2} twins. Influence of the {112 ̅1} twin activity during deformation of Mg alloys is still not comprehensively explored in the literature. For this purpose, we incorporated both the {101 ̅2} and {112 ̅1} extension twin modes in the PRISMS-Plasticity-a highly scalable and open-source finite element-based crystal plasticity solver. Predicted stress strain response and the twin fractions are calibrated and validated with the experimental observations. Further, statistical analyses of initial orientation dependence, stress distribution and relative activity of both types of the extension twins are discussed. This use case study also highlights diverse applications of PRISMS-Plasticity framework for polycrystalline deformation simulations. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Magnesium, Computational Materials Science & Engineering, Mechanical Properties |