Mechanical and damping properties of equal channel angular extrusion-processed Mg-Ca alloys

Equal channel angular extrusion (ECAE) was applied to an extruded Mg-1.0mass%Ca alloy to achieve a high strength and high damping capacity. Microstructure observations revealed that the texture and local misorientation distribution depend on the ECAE temperature. ECAE at a low temperature of 260 °C resulted in a high average Schmid factor of basal slip and a high kernel average misorientation in the processed alloy. Consequently, the alloy processed by ECAE showed a high yield strength without sacrificing the damping capacity.