Abstract
The paper reports experimental and numerical study of different deformation mechanisms activated in the AZ31B magnesium alloy sheet subjected to cyclic in-plane tensile – compressive deformation. The influence of slip, twinning and detwinning upon the mechanical response and texture evolution of the material is thoroughly investigated. The regime of twinning and detwinning activity is assessed based on the variation of hardening modulus in the course of the process. Velocity-based large strain crystal plasticity model accounting for twinning and detwinning is formulated. The crystal plasticity model parameters are identified using the implementation of the evolutionary algorithm. Predicted activity of deformation mechanisms is discussed with respect to the experimental data.
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