Investigation on the Recrystallization Mechanism in Warm-Rolled Ti-IF Steel

The nuclei orientation, the nucleation site at the early stage of recrystallization, and the growth mechanism of the nuclei have been studied by EBSD analysis in Ti-IF steel during direct annealing after warm rolling. It is concluded that the formation of the recrystallization texture is dominated by the oriented nucleation mechanism. The recrystallized nuclei with gamma-orientation emerged preferentially at the beginning of recrystallization and preferred to form in the deformed bands with gamma-orientation and on the boundaries between gamma- and alpha-orientations. The recrystallized grains first consumed their neighboring gamma-oriented matrix; and then consumed the alpha-oriented deformed bands at the late stage of recrystallization, leading to strong gamma-fiber.