Deep drawing of age-hardened 2036 aluminum alloy

Abstract

Deep drawability, Baring ratio, tensile properties, textures and hardness change by deep drawing were examined for 2036 aluminum alloy specimens age-hardened under various conditions. Specimens aged at temperatures below 160°C show higher limiting drawing ratio (LDR) than those as quenched or fully annealed, whereas those aged above 180°C show lower LDR. LDR of age-hardened materials is shown to be correlated to total elongation and n value, but not to tensile strength and r value. Earing in age-hardened specimens is nearly same as in the fully annealed or as quenched ones. The obtained LDR values were compared with ones previously reported for 6061 and 7N01 alloys. 2036 and 7N01 alloys show the highest and lowest LDR, respectively when compared at the same tensile strength, total elongation, r and n values. LDR of age-hardened specimens of these three alloys are shown to be correlated to r_min value, and inversely correlated to the intensity of (200) diffraction parallel to the sheet.