|About this Abstract
||2021 TMS Annual Meeting & Exhibition
||Magnesium Technology 2021
||On the Role of Crystallographic Anisotropy and Texture in Damage Tolerance of Magnesium and its Alloys
||Shahmeer Baweja, Padmeya Indurkar, Shailendra P. Joshi
|On-Site Speaker (Planned)
The crystallographic plastic anisotropy and the asymmetry of magnesium reflect in its polycrystal response via texture. While texture-strength linkages have been studied, the role of textural variability on damage remains elusive. To that end, metrics are needed to relate plastic anisotropy to damage, which is challenging. A possible approach is to adopt mechanistic descriptions of the damage. In this work, we adopt the following approach: we appeal to the Hill anisotropy tensor as a potential damage descriptor. First, extensive 3D crystal plasticity simulations are performed for a wide range of textures. The resulting responses are used to obtain the Hill coefficients, which are used in projecting the propensity of textured polycrystals to damage by: (i) void evolution, or (ii) shear instability. A focus is on understanding the potential roles textural variability and crystallographic plastic anisotropy play in damage under different loading conditions.
||Magnesium, Mechanical Properties, Modeling and Simulation