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Influence Of Texture And Grain Size On The Plastic Anisotropy In A Wrought Mg Alloy: Synchrotron X-Ray Diffraction And Visco-Plastic Self-Consistent Modeling, Yi Wang

Doctoral Dissertations

The combined effects of texture and grain size on the yielding and hardening behavior in a hot-rolled AZ31B Mg alloy were studied by using synchrotron x-ray diffraction and visco-plastic self-consistent (VPSC) simulation methods.

First, the influence of texture on Hall-Petch relationships (namely, critical resolved shear stresses and hardening parameters) in a Mg alloy was investigated to establish a constitutive basis for the VPSC simulation.

Then, the changes in dominant deformation mechanisms (basal, prismatic, and pyramidal slip as well as extension twin) and their relative interactions were studied systematically as a function of the initial texture using a VPSC scheme. The …