Dual-texture induced significant improvement in mechanical properties of extruded ZT31 Mg alloy
Shuai Yuan, Xianhua Chen, Xiaohuan Pan, Fusheng Pan
Abstract
Texture engineering is one of the essential strategies to regulate the mechanical properties of Mg alloys. Dual-textured Mg-3Zn-1Sn (ZT31, wt.%) extruded rod with typical fiber texture component and <0001>//ED (extrusion direction) texture component were fabricated in this work. Compared to the ZT31 extruded plate with typical basal texture (<0001>//normal direction), the ZT31 extruded rod exhibits a significant enhancement in strength while maintaining superior plasticity, achieving excellent strength and plasticity synergy. This is ascribed to the strong texture strengthening effect of the dual-textured ZT31 extruded rod, and more twin activation during deformation, which enhances the work-hardening effect, coordinates the strain along the c-axis, and facilitates homogeneous plastic deformation. This work provides a new insight into the development of high-performance Mg alloy via texture modification.