Through-thickness texture gradients in cold-rolled aluminum

The through-thickness texture variations in similar to 40 pet cold-rolled p olycrystalline aluminum were studied using X-ray diffraction and the electr on backscattering pattern (EBSP) technique. The influence of the roll-gap g eometry and of sequences of small and intermediate draughts on the developm ent of deformation textures in multipass rolling was considered. It was fou nd that similar textures were formed near the surface and in the central la yers of all specimens, while, in the intermediate layers of different plate s, different textures were observed. Small draughts gave rise to the shear texture in the intermediate layers, while no pronounced shear texture was r evealed anywhere through the thickness of plates rolled with intermediate d raughts. It was found that small-draught rolling only has a pronounced effe ct on the texture if it accounts for a significant strain in the rolling sc hedule. It was found, furthermore, that nonuniformity of the initial recrys tallization texture may be retained in the texture after similar to 40 pet rolling.