Influence of Niobium Microalloying on the Kinetics of Static and Dynamic Recrystallization during Hot Rolling of Medium-Carbon High-Strength Steels

摘要

The temperature-strain conditions of dynamic and static recrystallization of medium-carbon steel microalloyed with titanium, boron, vanadium, and niobium during hot deformation at a rate of 1 s~(–1)are determined. It is found that, under hot rolling conditions, niobium prevents the completion of dynamic recrystallization, and at temperatures below 970°C, it drastically slows down static recrystallization in the pauses between successive reductions.