Non-Basal Texture Evolution During Annealing of Cold-Deformed Magnesium Alloy

In this study, effects of statically and dynamically formed precipitates on the microstructure and texture evolutions were investigated after two step deformations and subsequent post deformation annealing of Mg-3Al-3Sn (wt.%) alloy. At first, the alloy was compressed at low temperature and at a relatively high strain rate to simulate the rolling behavior. Annealing at moderate temperature recrystallizes the microstructure and forms static precipitation. Further deformation was performed on the recrystallized microstructures with the presence of precipitation followed by a subsequent annealing at the deformation temperature. Microstructures were characterized by optical and scanning electron microscopes and macro- and micro-texture were measured by X-ray diffraction (XRD) and Electron Back-Scattered Diffraction (EBSD) techniques, respectively. Fine recrystallized grains were obtained after annealing due to the presence of large volume fraction of precipitates. Also, the texture was weakened significantly after the final annealing step probably due a mechanism that involves the precipitates.