Mechanical properties of AZ31 alloy sheets deformed by low-cycle reverse bending

The effect of the deformation by reverse bending (RB) using a various number of cycles on the mechanical properties of the sheets of the AZ31 alloy has been studied. The quantitative relationship between the characteristics of the texture and anisotropy in the mechanical properties has been established in rolled alloy sheets after recrystallization annealing at 320A degrees C and deformation by reverse bending. The anisotropy of the yield strength represented by second-rank tensors is in good agreement with the experimental data for all the studied modes of deformation. The anisotropy of the ultimate tensile strength and relative uniform elongation is satisfactorily described by a second-rank tensor only for deformations to three cycles of the RB. The anisotropy of relative elongation is described by a second-rank tensor for 5.5 cycles of RB deformation. To describe the anisotropy in the mechanical properties, which cannot be described by the tensors of the second rank, we have used fourth-rank tensors.