{111}熱延集合組織を有するIF鋼からの強い {111} 冷延集合組織形成機構

抄録

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 recrystallisation by consuming γ-fibre components of the deformed matrix. The predominant nucleation of the {111}<110> 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.