Annealing induced concentration of basal poles toward the normal direction of a hot rolled Mg-5.7Zn plate

In the present study, a Mg-5.7Zn hot rolled plate was annealed at different temperature, with the aim to study the texture evolution during static recrystallization. Our results show that the initial basal texture with two peaks of basal poles tilting from the normal direction (ND) toward the transverse direction (TD) is replaced by a single peaked basal texture and basal poles concentrate toward the ND after a complete recyrstallization. It is found that the recrystallized grains mainly appear in the shear bands containing many twins. The recrystallized grains with basal pole close to ND have much higher nucleation rate than nucleus randomly oriented and grain growth does not change the advantage of basal orientations, which is mainly responsible for the concentration of basal poles toward the ND.