Modeling texture change during the static recrystallization of interstitial free steels

A recrystallization model was developed based on the principal features of oriented nucleation and selective growth. The nucleation mechanism that is adopted assumes that nucleation takes place in deformed grains with relatively high Taylor factors. The selective growth law is based on the assumed high mobility of {110} plane matching (PM) boundaries and also includes a variant selection rule. The two submodels enable the full recrystallization process to be simulated. The theory is applied to the annealing of a Ti-Nb alloyed interstitial free (IF) steel. It is demonstrated that the nucleation and growth algorithms can successfully account for the annealing textures observed, including the presence of a strong {111}(211) component. An important feature of the model is that it permits the role of variant selection to be assessed; it also shows the effect on the texture of the low mobility of low-angle grain boundaries (LAGBs).