Dr. Ma

Prediction of the local stress and texture of the extruded product is considerable important for property control and processing optimization in Mg extrusion. Benefitting the polycrytal plasticity modelings and the necessary experimental results, the local stress, texture and deformation modes' behavior along extrusion can be successfully predicted. The schematic flow chart of extrusion prediction of Mg is presented in Figure 1 as below. The measured and VPSC predicted simple compression true stress-strain curves along two perpendicular directions (extrusion and extrusion radial direction)are presented in Figure 2. The predicted local stress and texture along center streamline in the conical die of the AM30 extrusion at 450C are presented in Figure 3. For comparison, a local texture showing in {0001} and {10-10} pole figures based on EBSD scanning in the center of the die is also shown in Figure 3.

Figure 1. Schematic chart of local stress and texture prediction under extrusion of Mg.

Figure 2. Measured and VPSC predicted AM30 stress-strain curves at 450C compression along ED and ER.

Figure 3. local stress and texture prediction along center streamline in the conical die during erusion of AM30 at 450C.