Primary recrystallization modelling for interstitial free steels

A two-dimensional (2D) Monte Carlo (MC) technique was used to simulate primary recrystallization in interstitial free (IF) steel. In order to consider anisotropic properties of grain boundary energy and grain boundary mobility, functions of boundary misorientation were introduced. Orientation-dependent stored energy developed in 80% cold-rolled IF steel was evaluated by reconstructing of data measured using electron back-scattered diffraction (EBSD) analysis. Subgrain method based on subgrain structure is used for quantitative analysis of the stored energy. The simulation shows that the recrystallized volume fraction at the initial stage of recrystallization affects recrystallization texture. An inhomogeneous distribution of stored energy and a severe spread of orientations induce inhomogeneous nucleation and large scattering of orientation in recrystallized grains. The nucleation sites of IF steels at an initial stage of recrystallization were high angle grain boundaries (HAGBs) and grain interiors. The main texture components obtained by the simulation were quite similar with those obtained experimentally.