The effects of post annealing on the mechanical properties, microstructure and texture evolutions of pure copper deformed by twist extrusion process

▶ Post annealing solve the softening problem occurred in repeated passes of TE. ▶ Post annealing decreased the coherent domain size of twist extruded sample. ▶ Post annealing increased the microstrain of twist extruded sample. ▶ Simple shear mode is the mechanism of deformation across the TE sample. ▶ The simple shear mechanism is disrupted by post annealing treatments.