Effect of Annealing Temperature on Microstructure and Properties of 3003 Aluminium Alloy Sheet

The microstructure of continuous casted plate ,cold rolled sheet and annealed sheet of 3003 aluminium alloy were observed by photo-electro metallographical machine, the mechanical properties were obtained through mechanical property test. The effects of annealing temperature on microstructure, tensile strength and elongation were discussed. The results show that the tensile strength decreases with the increase of annealing temperature, then tends to a fixed value. The change rule of elongation is opposite. The perfect recrystallization temperature is 460 ℃.