Texture Evolution during Uniaxial Compression of Hot-Rolled AZ31 Mg Alloy

Abstract

Uniaxial compression tests on hot-rolled AZ31 Mg alloy were carried out at 200°C. In order to investigate the evolution of texture during plastic deformation, cylindrical specimens were compressed to the rolling and normal directions. Experimental investigation reveals that work hardening and texture evolution are strongly dependent on the loading direction. The occurrence of deformation twinning was revealed by the observation of microtexture using electron backscatter diffraction (EBSD). A visco-plastic self-consistent (VPSC) polycrystal model was used to simulate the texture evolution during the uniaxial compression. The texture evolution induced by crystallographic slip and deformation twinning can be explained by the relative activity of each deformation modes.

Implementation of Twin Reorientation and Softening Schemes in a Polycrystal Plasticity Model for Mg Alloys

“…The different hardening behavior of the specimens may be due to the different critical resolved shear stresses and activities of deformation modes during uniaxial compression. The initial texture can be characterized as a fibre texture with c-axis parallel to the ND [11]. The optical microstructure and microtexture for samples deformed at 300°C are shown in Fig.…”

Effects of Deformation Texture and Twins on the Corrosion Resistance of Rolled AZ31 Mg Alloy Under 5% Uniaxial Compression

“…Figure 3a indicates that the {0001} orientations in most grains of TD plane surface are concentrated to TD direction, showing a strong {0001} texture parallel to TD axis. It was determined that the {0001} orientation would rotate the c-axis by 86°away from the sheet normal to be almost parallel to the compression axis [22,23]. The crystallographic orientation of most grains in the 45TD plane, however, is more widely dispersed, as shown in Fig.…”