Study Of Deformation And Recrystallization Textures Of Cross-Rolled 3105 Aluminum Alloy

The hot band of AA 3105 aluminum alloy was cold-rolled to different reductions along the original rolling direction and the original transverse direction, and then annealed at 427℃for 24 h. Deformation and recrystallization textures in these cold rolled sheets were investigated by X-ray diffraction.The results show that during straight-rolling the initialβfiber rolling texture further strengthens with increasing rolling reduction. After 90°rotation about the normal direction, the typical B, S and C orientations on theβfiber are transformed into the B′{110}<111>, S′{123}<17 22 9> and C′{112}<110> orientations. These orientations are unstable and gradually rotated to theβfiber in the new sample reference system. As the rolling reduction increases, the C′orientation moves through the S′orientation towards the B′orientation during rolling, while the B′orientation moves towards the B orientation along theαfiber. After the crystallites reach the {011}<655> orientation, they gradually rotate to theβfiber between the B and S orientations along different paths, leading to a faster increase in the intensities of the B and S orientations than the C orientation. The S′orientation has the lowest stability during rolling, and the stability of the B′orientation is higher than that of the C′orientation. With the rolling reduction increasing, the volume fractions of C′and S′orientations decrease, and the volume fraction of B′orientation firstly increases then decreases. The variation in the volume fractions of the B′component, S′component, C′component,βfiber and remainder components with rolling true strain follows the Avrami equation. The strong initial B′, S′and C′textures increase significantly the formation rate of theβfiber rolling texture.The recrystallization is completed at a lower critical strain in the cross-rolled specimen than in the straight-rolled specimen. The recrystallization texture of straight-rolled specimens is characterized by the major P component and the minor R and Goss components. The recrystallization texture of pseudo cross-rolled specimens depends on the cross-rolling reduction. As the cross-rolling reduction increases from 33% to 90%, the recrystallization texture is changed from the {012}<021> texture through {1 11 7}<358> to the P texture.