In-Situ Annealing Study of Transformation of I- and I3 Texture of Interstitial-Free Steel Sheet by High-Energy X-Ray Diffraction

High-energy synchrotron diffraction offers great potential for experimental study of recrystallization kinetics. An experimental design to study the recrystallization mechanism of interstitial-free (IF) steel was implemented. The whole annealing process of cold-rolled IF steel with 80% reduction was observed in situ using high-energy X-ray diffraction (HEXRD). The results show how the main texture component of IF steel change, i.e. the I- [ // rolling direction (RD)] fiber texture decreases and the I3 [ //normal direction (ND)] fiber texture increases. The important part of the I- fiber texture is that both the {100} and {112} texture decrease at the beginning of recrystallization. The I3 fiber texture increases at the early stage of recrystallization which stems from the increase of {111} . Nevertheless, the {111} does not change after recrystallization. The dynamic evolution of the main texture components {100} , {112} , {111} and {111} is given by in-situ HEXRD.