Effect of Hot Rolling on Structure and Mechanical Properties of Mg–Y–Zn–Mn Alloys

Abstract

The effect of hot rolling on the structure and mechanical properties of three Mg–Y–Zn–Mn alloys was studied depending on the process temperature and the reduction ratio. The original plates of cast WZM111, WZM211, and WZM321 alloys after heat treatment were subjected to rolling from an initial thickness of 7 mm to a final thickness of 0.2 mm at two temperatures, namely 400 and 450 °C. Optical and scanning electron microscopy, the microhardness measurement, and tensile testing were used to characterize the material. The rolling regimes that provide a good balance between the strength and ductility of the alloys were established.

Keywords

• Mg–Y–Zn–Mn magnesium alloys
• rolling
• mechanical properties
• microstructure