Tailoring the texture of an extruded Mg sheet through constrained groove pressing for achieving low mechanical anisotropy and high yield strength

Abstract

Constrained groove pressing (CGP) was utilized to modify the texture and mechanical properties of extruded Mg–2Gd–3Zn sheet with typical TD (transverse direction)-split texture and pronounced mechanical anisotropy. The texture evolution sequence during CGP was studied and it was observed that a new 〈1¯21¯1〉 component with basal poles rotated 15°–30° toward the extrusion direction (ED) is introduced during CGP, as a result of simultaneous activation of basal and prismatic slip and shear deformation. Finally, a non-basal ED–TD double split texture was obtained after the CGP process, resulting in significantly reduced mechanical anisotropy.