非调质钢30Mn2SiV再结晶规律研究

Research on Recrystallization Law of Non-Quenched and Tempered 30Mn2SiV Steel

研究了某厂开发的非调质钢30Mn2SiV的再结晶行为 ,指出该钢中由于加入了微量元素V ,原始奥氏体晶粒随加热温度变化和缓 ,粗化温度在1200℃以上 ;这种钢发生动态再结晶的临界变形量较大 ;部分静态再结晶区较大 ,从而为轧制工艺和轧后余热处理工艺参数的确定提供了理论基础。

The research focuses on the recrystallization behaviors of the non-quenched and tempered 30Mn2SiV steel developed by a specific works. The result shows that thanks to addition of the trace element V to the said steel, primitive austenitic grain formation is slowing down along with change of the temperature, and the coarsening temperature is above 1200 °C, and that the critical deformation amount of the steel's dynamic recrystallization is considerable, while certain static recrystallization area is also significant, which provides theoretic basis for setting parameters of rolling process and post-rolling afterheat treatment of the work piece.