Textures induced by tension and deep drawing in aluminum sheets

Abstract The textures induced by tensile deformation and deep drawing were investigated. For this purpose, the textures of three types of aluminum sheet (1145, a batch and a continuously annealed experimental alloy) were measured and analyzed using the series expansion method. The results indicate that the initial textures evolve towards the 〈111〉 and 〈100〉 type fiber textures after 20–30% of tensile deformation. After plane strain flange deformation during the early stages of deep drawing, the orientation densities increase around the P {011}〈111〉 and Goss {011}〈100〉 components. During the later stages of drawing, when flange thickening occurs, sometimes followed by ironing, the P orientation becomes unstable, whereas those along the α D -fiber are strengthened. The distinct texture changes taking place in each alloy are interpreted in terms of differences in the strengths and distributions of the initial texture components. The earing behaviors of the three materials are also analyzed in terms of the initial strengths of the cube {001}〈100〉, Goss {011}〈100〉 and R {113}〈574〉 components.