Effect of hot-rolling processing on texture and r-value of annealed dual-phase steels

For this study, both conventional and a low-temperature hot-rolling (LTHR) processes were applied to capture the effect of hot-rolling processing conditions on the texture and r-value of annealed dual-phase (DP) steels. The LTHR process induced distinct texture gradients through the thickness direction of the hot-rolled DP steel. Microtexture analysis revealed that weakness of the γ-fiber texture in the surface and intermediate regions of the annealed DP steel manufactured by the LTHR process was closely related to the development of shear texture in the same regions of hot-rolled DP steel. The distinct texture gradients in the annealed DP steel were also found to have decreased its r-value.