非調(diào)質(zhì)鋼30Mn2SiV再結晶規(guī)律研究

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

摘要: 研究了某廠開發(fā)的非調(diào)質(zhì)鋼30Mn2SiV的再結晶行為, 指出該鋼中由于加入了微量元素V, 原始奧氏體晶粒隨加熱溫度變化和緩, 粗化溫度在1200℃以上;這種鋼發(fā)生動態(tài)再結晶的臨界變形量較大;部分靜態(tài)再結晶區(qū)較大, 從而為軋制工藝和軋后余熱處理工藝參數(shù)的確定提供了理論基礎。

Abstract: 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 ℃, 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.