Textures and Properties of Al-Mg-Si-Cu Alloy Sheets with Different Annealing between Rolling

Tensile and formability properties, textures of the Al-Mg-Si-Cu alloy sheets with different annealing treatments between rolling were investigated. The results show that, it was found that relatively strong deflected G orientation and C orientation texture in the alloy without annealing treatment between rolling, very strong G orientation and R/S orientation texture in the alloy annealed at 350 ℃ for 1 h between rolling, and the weak deflected G orientation and R/S orientation texture in the alloy annealed at 510 ℃ for 1 h between rolling. All alloys contained 111 texture whose content was more in the alloy with annealing between rolling than that without annealing. The tensile strength and the yield strength were minimum, the elongation value was largest and the forming performance was the best in the alloy annealed at 510 ℃ for 1 h. The tensile strength and the yield strength were the maximum, the elongation value was least and the formability were the worst in the alloy without annealing treatment. The forming performance was better in the alloy with larger ratio of total rolling textures to recrystallization textures.