Effect of rolling direction on the development of microstructure, texture, and mechanical properties of AZ31B alloys

In the present work, the development of the microstructure, texture, and mechanical properties of AZ31B Mg alloys after rolling at 200°C along different directions was studied. The development of microstructure after rolling can be explained on the basis of twinning and dynamic recrystallization. After the heat-treatment at 300°C in rolled sheets in order to relieve stress, grains in the shear like deformed band developed inhomogeneously like a cluster. The basal planes split and were rotated in the rolling direction (RD). Two samples had similar grain morphologies and textures; nevertheless, these sheets had different mechanical properties. The reasons can be attributed to the influence of the developed microstructure, such as twinning and textures.