Microstructure and mechanical properties of Mg-6Sn and Mg-6Zn alloys prepared by different processing techniques: a comparative study

摘要

The microstructure and mechanical properties of Mg-6Sn and Mg-6Zn are investigated and compared in cast/heat treated, rolled and extruded conditions. Compared to the heat treated alloys, the grain size of both alloys decreases while the volume fraction of precipitates increases by rolling and extrusion in Mg-6Sn alloy at 350 degrees C due to dynamic recrystallization and dynamic precipitation of intermetallic phases. Zinc has a stronger grain refining effect than tin in the heat treated alloys while the opposite effect is found in the rolled and extruded alloys.