| About this Abstract |
| Meeting |
13th International Conference on the Technology of Plasticity (ICTP 2021)
|
| Symposium
|
13th International Conference on the Technology of Plasticity (ICTP 2021)
|
| Presentation Title |
Understanding the Microscale Plastic Behavior and Deformation Mechanism of Magnesium Alloy via Ex-situ Experiments and Full-field Crystal Plasticity Modeling |
| Author(s) |
Haiming Zhang, Shuai Xu, Xiaoqing Shang, Zhenshan Cui |
| On-Site Speaker (Planned) |
Haiming Zhang |
| Abstract Scope |
Magnesium alloys have been of growing interest for their low density and high specific strength, but their applications are impeded by their poor formability at room temperature. This work employs the state-of-art experimental and modeling techniques to understand the jointly effect of thickness and grain size on the plastic behavior and deformation mechanism of wrought Mg alloy. Equal channel angle pressing were applied to AZ31 Mg alloy to fabricate billets with various grain sizes but the same basal texture. Interrupted micro-tensile tests combined with ex-situ EBSD characterizations were carried on the fine-polished specimens with different grain size and thickness. It shows that mechanical twinning is significantly affected by both grain size and thickness. In particular, the volume fraction of extension twins decreases with the number of grains in the thickness. Full-field crystal plasticity simulations demonstrate that both the contributions of basal slip and twinning are rather sensitive to grain size. |
| Proceedings Inclusion? |
Definite: At-meeting proceedings |