Effect of Loading Direction on the Tensile Properties and Texture Evolution of AZ31 Magnesium Alloy

Abstract

Samples were cut from an extruded AZ31 magnesium alloy bar for uniaxial tensile and EBSD characterization tests. The long axis and bar extrusion directions were 0° (T0 sample), 45° (T45 sample), and 90° (T90 sample). The effects of loading direction on the tensile behavior, microstructure, and texture evolution of the magnesium alloy were studied. Results show that the obvious mechanical anisotropy of tensile behavior is affected by the loading direction, and the T0 sample with a grain c-axis perpendicular to the extrusion direction has a strong basal texture and high flow stress and yield strength. The loading direction has a significant influence on the microstructure characteristics of different samples, especially the number of {10–12} tensile twins and {10–11} compression twins. Texture evolution results show that the loading direction and the effect of deformation mode on the deformation mechanism lead to variations in texture evolution: the basal slip and prismatic slip during the plastic deformation of the T0 specimen, the compression twin of the T45 specimen, and the tensile twin of the T90 specimen.

Microstructure, texture, and instability during superplastic deformation of ECAP-treated AZ31 Mg alloy

“…Accordingly, the basal planes were rotated to align with the tensile direction, and the second-order pyramidal planes were rotated in the transverse direction. Although it is expected that during tensile deformation of Mg alloys, the basal planes align themselves preferably parallel to the deformation axis [50], and the prevalence of GBS may cause grain rotations and, consequently, discrepancies in the pole figures.…”

Biaxial Deformation Behavior of AZ31 Magnesium Alloy along RD and Diagonal Direction Degree between TD and ND

“…Magnesium (Mg) alloys have drawn increasing attention due to their characteristics, such as light weight and well damping properties [1][2][3]. The main hurdle to efficient implementation of these alloys is related to their limited room temperature (RT) formability.…”