Texture Evolution of 1060 Aluminum Alloy Featuring Initial Rotated β Fiber During Accumulative Roll Bonding Process

Accumulative roll bonding was employed on 1060 aluminum alloy along the transverse direction without lubrication. The texture evolution and lattice rotation of an ARB-processed aluminum sheet, which initially exhibited a rotated β fiber texture, were examined using X-ray diffraction. Successful interlayer bonding was achieved during the ARB process, and the grains in the sheets were refined and stretched along the rolling direction. The rotated β fiber was unstable during shear deformation, gradually transitioning to a stable r-cube orientation along different rotation paths. Variations in ODFs with accumulated true strain were utilized to determine the rotation paths from the initial rotated β fiber to the end r-cube orientation. The rotated β fiber disappearance rate initially decreased rapidly as the accumulated true strain increased, followed by a slower decline. The B’ {0 1 1}<1 1 1> orientation moved to the S’ {1 2 3}<17 22 9> orientation along the skeleton of the initial rotated β fiber, while the C’ {1 1 2}<1 1 0> orientation moved to the r-cube orientation along the transverse direction axis. A slight deviation from the C’ orientation was revealed in the rotation path from the S’ orientation to the r-cube orientation. Texture evolution was clarified quantitatively through establishing a mathematical relation between texture component volume fractions and accumulated true strain utilizing the JMAK equation. The relatively high r values indicated that the JMAK equation could quantify texture evolution during shear deformation.