Semisolid extrusion of wrought magnesium alloy AZ61 and its mechanical properties

Abstract

The basic characteristics of extrusion tests on semisolid wrought magnesium alloy AZ61 are investigated. The selected temperature range is from hot extrusion at 300 °C up to the semisolid temperature. Other process parameters investigated are extrusion ratio, which was varied from 6.3 to 39, and extrusion speed which was varied from 3 mm/s to 150 mm/s. Results are expressed in terms of forming load and process limit by comparing hot extrusion with semisolid extrusion. Moreover, the microstructure and hardness of the extruded products are investigated and correlated with the mechanical properties.