Enhancing mechanical properties of an Mg–Zn–Ca alloy via extrusion
Yuzhou Du, Wei Du, Danli Zhang, Yanfeng Ge, Bailing Jiang
Abstract
The mechanical properties of an Mg–Zn–Ca alloy were significantly improved through extrusion deformation. High-density spheroidal Ca 2 Mg 6 Zn 3 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.
Topics & Concepts
ExtrusionMaterials scienceAlloyMicrostructureMetallurgyDeformation (meteorology)Texture (cosmology)6063 aluminium alloyComposite materialImage (mathematics)Artificial intelligenceComputer scienceMagnesium Alloys: Properties and ApplicationsAluminum Alloys Composites PropertiesMetal and Thin Film Mechanics