Effect of cold rolling reduction on development of recrystallization textures in an Al–Mg–Si alloy

Abstract

The effect of cold rolling reduction on development of recrystallization textures in an Al–Mg–Si alloy was investigated. Hot-rolled samples were cold-rolled to 0%(non-cold-rolled), 67%, 83%, and 92% reduction and then annealed at 533 K, 563 K, and 833 K. All annealings were performed at the same heating rate. The orientation density of Cube({001} ‹100›)texture after the annealing at 833 K decreased dramatically at over 67% cold rolling reduction. However, Cube_ND({001} ‹520›), R({123} ‹634›), and P({011} ‹111›)textures increased with decreasing orientation density of Cube. The phenomenon of particle stimulated nucleation(PSN)was clearly observed at 83% cold rolling reduction according to the investigation of the partially recrystallized microstructures. Moreover, recrystallized grains of Cu({112} ‹111›), Cube_ND, R , and P orientation were found around coarse second-phase particles. Therefore, the decrease in orientation density of Cube and the increase in orientation density of Cube_ND, R, and P were assumed to be mainly caused by PSN. In addition, this study suggested that development of recrystallized textures was affected by orientation rotation relationships between recrystallized grains and surrounding deformed matrix.