Unraveling texture, triaxiality and anisotropy effects in hcp polycrystals

Abstract eng:
We discuss the complex interactions arising from inherent plastic anisotropy, texture and stress triaxiality in Mg polycrystals using crystal plasticity modeling and simulation. The micromechanics of deformation originating from initial textural variations are mapped and their influence on the deformed textures for increasing triaxiality is resolved. We discuss the implications of the distribution and evolution of the deformation modes at increasing amounts of triaxiality on failure. The results demonstrate the role of the inherent plastic anisotropy at the single crystal level on the macroscopic deformation anisotropy, limit loads and strain localization.

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