HTP高铌钢形变奥氏体再结晶规律研究  

Study of austenite recrystallization of high Nb HTP steel

作　　者：焦多田[1] 王路兵[1] 武会宾[1] 张伟卫[1] 张鹏程[1] 唐荻[1] 任毅[2] 

机构地区：[1]北京科技大学高效轧制国家工程研究中心,北京100083 [2]鞍钢集团技术中心,鞍山114001

出　　处：《塑性工程学报》2008年第3期119-122,131,共5页Journal of Plasticity Engineering

摘　　要：采用阶梯试样,通过光镜观察,研究了0.08%NbHTP(High temperature processing)钢形变奥氏体再结晶规律,分析了变形温度、变形量等工艺参数对变形奥氏体再结晶百分数的影响,得出了实验钢变形奥氏体再结晶图。结果表明,变形量为60%时,试验钢的完全再结晶临界温度为1070℃,未再结晶临界温度为900℃,分别比含Nb0.04%的普通HSLA钢相应温度提高了120℃和100℃,热机械加工性能得到大幅度提高,证明了高含量Nb对奥氏体再结晶的强烈阻滞作用。Through adopting the stepped test piece, analysed by optical microscope, the influence of the parameters including rolling temperature and reduction on the recrystallization fraction of 0. 08% Nb HTP steel deformed austenite was studied, the deformed austenite recrystallization figure of the test steel was obtained. The result indicates, the static recrystallization temperature of HTP steel is above 100℃ higher than common HSLA steel, HTP steel has better heat process performance; high content Nb has great function of holding back recrystallization.

关 键 词：再结晶 HTP 微合金元素 

分 类 号：TG113.25[金属学及工艺—物理冶金]