Lattice rotation and stability of 22.5° ND rotated cube orientation in cold rolled polycrystalline AA 5182 aluminum alloy

AA 5182 aluminum alloy with a strong cube texture was cold rolled to different reductions at an angle of 22.5degrees to the prior rolling direction. The texture evolution at this new rolling direction was investigated by X-ray diffraction. The rotation paths and stability of the 22.5degrees ND rotated cube orientation were determined based on the variation in the three-dimensional orientation distribution function (ODF) with rolling reduction. The results show that most of the grains with the 22.5degrees ND rotated cube orientation are directly rotated to the beta fiber along different rotation paths, but there are a few grains moving through the cube orientation to the beta fiber. The {001} <110> oriented grains possess the lowest stability during rolling, and the stability increases as the initial orientation changes from the {001} <110> orientation to the {001} <100> orientation along the psi(1) axis. (C) 2004 Elsevier B.V. All rights reserved.