Effect of the Second-Phase Particle Precipitation on the Recrystallization Texture of High-Strength and Fine-Grain Interstitial-Free Steel

The effect of the second-phase particle precipitation on the recrystallization texture of high-strength and fine-grain interstitial-free steel was studied. It is shown experimentally that the sizes of second-phase particles increase and their number decreases with holding time and annealing temperature. The texture is mainly influenced by the size, number, and distribution of the particles. Finely dispersed second-phase particles are strongly pinned on the grain boundaries, which significantly hinders the development of {111} surface textures. It the pinning force on the grain boundary decreases, the {111) surface texture improves due to the aggregation and growth of second-phase particles with holding time. The strength of the γ-phase ({111}<112> texture) grows and reaches maximum (annealing temperature 850°C), finally declines with annealing temperature. Precipitated particles of 40–60 nm favor the development of the {111} texture component.