FTSR轧制含铌钢的再结晶行为  

Recrystallization of Nb Microalloyed Steel During FTSR

作　　者：周晓光[1] 吴迪[1] 刘振宇[1] 张晓芳[1] 王国栋[1] 刘相华[1] 

机构地区：[1]东北大学轧制技术及连轧自动化国家重点实验室,辽宁沈阳110004

出　　处：《钢铁研究学报》2008年第9期42-45,共4页Journal of Iron and Steel Research

基　　金：国家自然科学基金资助项目(50334010;50474086)

摘　　要：结合某钢厂FTSR薄板坯连铸连轧生产线轧制X46含Nb钢的工艺参数,在Gleeble-2000热/力模拟实验机上模拟了粗轧阶段该钢的组织演变,并研究了Nb含量对未再结晶温度的影响。研究结果表明:①粗轧阶段,粗大的铸态组织发生了充分的动态再结晶,有效地细化了奥氏体晶粒。②随着钢中Nb含量的增加,未再结晶温度逐渐升高,该生产线可有效进行控制轧制,避免轧制含Nb钢时混晶现象的发生。Adopted technique parameters of rolling X46 Nb microalloyed steels during flexilbe thin slab rolling, microstructure evolution of rough rolling and the effect of Nb on non-crystallization temperature have been investigated by Gleeble-2000 thermal/mechanical simulation tester. The results show that at the stage of rough rolling, cast structure has become finer, dynamic recrystallization is adequate; non-recrystallization temperature will increase with the increase of Nb content. FTSR line can control rolling effectively and avoid mixed grain structure during rolling Nb microalloyed steels.

关 键 词：柔性化薄板坯连铸连轧 含铌钢 动态再结晶 未再结晶 

分 类 号：TG335[金属学及工艺—金属压力加工]