Enhancing mechanical properties of an Mg–Zn–Ca alloy via extrusion

• DOI: 10.1080/02670836.2021.1938861
• Publication Date: 2021-06-14T10:15:25Z
• Authors: Yuzhou Du; Wei Du; Danli Zhang; Yanfeng Ge; Bailing Jiang
• Keywords: 0103 physical sciences; 01 natural sciences

The mechanical properties of an Mg–Zn–Ca alloy were significantly improved through extrusion deformation. High-density spheroidal Ca2Mg6Zn3 with a diameter ranging from 10 to 50 nm dynamically precipitated during extrusion deformation. The microstructure of the as-extruded alloy was obviously refined compared with that of the as-cast counterpart. A bimodal microstructure consisting of coarsely deformed grains and finely recrystallised grains was obtained through extrusion. Additionally, the as-extruded alloy exhibited a strong basal texture. Consequently, the yield strength increased from 42 MPa of the as-cast alloy to 285 MPa of the as-extruded alloy.