Formation of {111}〈110〉 and {111}〈112〉 textures in cold rolled and annealed IF sheet steel

The relative prevalence of {111}〈112〉 and {111}〈110〉 orientations in the recrystallization texture of a partially annealed cold rolled Ti-IF steel was examined using Electron Back-Scattering Diffraction (EBSD). A disproportionately high number of recrystallized grains with a near {111}〈112〉 orientation were observed at the grain boundaries between {111}〈uvw〉 and {hkl}〈110〉 deformed grains. It is suggested that the presence of 'soft' {hkl}〈110〉 orientations adjacent to a {111}〈uvw〉 grain impacts upon the development of the deformation structure in that grain in such a way as to favour the formation of near {111}〈112〉 nuclei during recrystallization. It is proposed that the formation of in-grain shear bands is an essential part of this process. This mechanism comprises a new explanation for the link between {hkl}〈110〉 deformation textures and {111}〈112〉 recrystallization textures seen in cold rolled IF steels.