Abstract
A model of recrystallization texture formation during slow heating of low-carbon aluminium-killed steel was developed. The evolution of three main texture components, having , and planes parallel to the sheet plane, is considered. The model is based on the oriented nucleation mechanism. The nucleation rate is treated as dependent on the stored energy of cold deformation, the peculiarities of deformation substructure and the texture. The effect of aluminium nitride precipitation on the grain nucleation is considered as the problem of selection of subgrains able to grow. A simple model of aluminium nitride precipitation is suggested describing the sequence of precipitation and particle coalescence. The recrystallization model was calibrated using available experimental data for a low-carbon aluminium-killed steel heated at . The simulated effect of heating rate on the texture is in qualitative agreement with experimental data. In particular, the optimum heating rate is predicted providing the peak drawability of the steel. This rate corresponds to the maximum overlapping of recrystallization and precipitation processes.
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