The Effect of Twinning on Texture Evolution of AZ63 Magnesium Alloy During Hot Working

To investigate the influence of primary texture and thermomechanical parameters on hot working behavior of AZ63 magnesium alloy, the flow behavior and deformation texture of hot compression test was compared for both cast and extruded samples. The extruded samples were machined in two extruded and normal directions. Compression tests were carried out at 250 °C and the strain rate of 1 s-1 and 0.01 s-1 and various strains. Microstructural observations and texture investigation in various conditions reveal that the presence of extensive twins and contraction twins in extruded samples and extensive twinning in cast samples at primary deformation strains and recrystallization at final strains of extruded samples have a significant influence on texture evolutions.