Mechanism of strong formation of {111} recrystallization texture of cold rolled IF steel sheet with {111} hot band texture

For a new industrially processed hot rolled Ti+Nb IF steel, finished in the ferrite region with significant lubrication, the texture development during cold rolling and annealing was investigated. Imaging Microscopy (OIM) reveals that γ-fibre grains nucleate and grow in the beginning of recrystallization by consuming γ-fibre components of the deformed matrix. The predominant nucleation of the {111}〈111〉 grains from the {111}〈112〉 matrix can be understood by assuming 〈112〉 rotation, which corresponds to the occurrence of the {110}〈111〉 slip system. Such the slip behaviour and the texture evolution mechanism, originally proposed by the present authors, group in a single crystalline 3% Si steel, is widely applicable to the mechanism of the {111} texture development of deep drawable cold-rolled steel.