| About this Abstract |
| Meeting |
MS&T21: Materials Science & Technology
|
| Symposium
|
Multi Scale Modeling of Microstructure Deformation in Material Processing
|
| Presentation Title |
Crystal Plasticity Modeling of Twin Variant Selection in HCP Magnesium |
| Author(s) |
Adwitiya Vishweshwar Rao, Anirban Patra |
| On-Site Speaker (Planned) |
Adwitiya Vishweshwar Rao |
| Abstract Scope |
A crystal plasticity finite element (CPFE) framework was developed for modeling deformation twinning in HCP magnesium. The anisotropic deformation of magnesium was captured by calibrating the model to single crystal experimental data for all possible deformation modes at room temperature. Furthermore, a novel energy-based criterion was proposed to model twin variant selection based on the dissipation of maximum energy due to twinning. The criterion was validated by comparing the simulated responses of single and polycrystals with available experimental data. Furthermore, a statistical analysis of twin variant selection was performed to predict the activation of certain non-Schmid twin variants, also observed in experiments. The simulated results were in qualitative agreement with the experimental data and could capture both Schmid and non-Schmid twin variants. |