Ti超低碳烘烤硬化钢铁素体区轧制试验研究  

Experimental Study on Ti Bearing Ultra-low Carbon Bake Hardening Steel Sheet Hot-rolled in Ferrite Region

作　　者：陈继平[1] 康永林[1] 郝英敏[1] 刘光明[1,2] 熊爱明[2] 

机构地区：[1]北京科技大学材料科学与工程学院,北京100083 [2]首钢技术研究院,北京100041

出　　处：《材料工程》2009年第10期61-66,共6页Journal of Materials Engineering

基　　金："十一五"国家科技支撑计划项目(2006BAE03A13)

摘　　要：实验室进行了Ti处理超低碳烘烤硬化钢的常规奥氏体区热轧和铁素体区润滑轧制以及冷轧、连续退火试验,结果表明与常规奥氏体区轧制相比,铁素体区润滑轧制能够提升超低碳烘烤硬化钢板的深冲性能,在伸长率相当的情况下退火后钢板的屈服强度和烘烤硬化BH值均略有所下降。EBSD微观取向分析表明,铁素体区润滑轧制退火钢板中的〈111〉//ND纤维织构稍强,两种情况下退火板中晶粒间取向都是以大角度晶界为主。Hot rolling in the conventional austenite region and in the ferrite region with lubrication, cold rolling and continuous annealing of Ti bearing ultra-low carbon bake hardening steels were experimentally studied. The results showed that the deep drawability could be improved while the yield strength and bake hardenability could be slightly lowered with similar elongation rate for the ultra-low carbon bake hardening steel sheet hot-rolled in the ferrite region with lubrication. It has been shown from the results of the 〈111〉//ND fiber textures of the steel sheet hot-rolled in the ferrite region are a little bit stronger than those of the steel sheet hot-rolled in the austenite region. The orientations among neighboring grains are mainly high angle grain boundaries under both conditions.

关 键 词：超低碳 烘烤硬化钢 铁素体区轧制 润滑 微观取向 

分 类 号：TG335.56[金属学及工艺—金属压力加工]