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

•ECAE processing was applied to a Mg–Ca alloy that is a potential biomaterial.•The aim was to explore increasing the strength while retaining the damping capacity.•The texture and local misorientation distribution depended on the ECAE temperature.•The alloy processed by ECAE showed a high yield strength without sacrificing the damping capacity. 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.