Observation and modeling of the through-thickness texture gradient in commercial-purity aluminum sheets processed by accumulative roll-bonding

摘要: Abstract The texture evolution in commercial-purity aluminum (AA1070) processed by accumulative roll-bonding (ARB) is investigated with the aid of X-ray diffraction and crystal plasticity modeling. experimental results indicate strong gradients through sheet thickness, from rolling-type textures orthorhombic symmetry at center to shear-type monoclinic near surface. are reproduced well polycrystal modeling carried out deformation histories finite element simulations. observations a relatively {4 4 11}〈11 11 8〉 component {0 0 1}〈1 1 0〉 surface attributed their higher orientation stability than other rolling- orientations. Examination average through-thickness suggests that ARB technique may not be an effective means develop apparent {1 1 1}〈 u v w 〉 components thus enhance normal anisotropy bulk materials.