轧制温度及冷却速度对T700组织性能的影响研究  

Effects of Rolling Temperature and Cooling Velocity on Microstructure and Properties of T700

作　　者：宋卓斐[1] 胡小明[1] 冯运莉[1] 冯润明[2] 刘太新[2] 尹绍江[2] 

机构地区：[1]河北联合大学教育部重点实验室,河北唐山063009 [2]唐山钢铁集团有限责任公司,河北唐山063009

出　　处：《热加工工艺》2013年第14期20-22,共3页Hot Working Technology

基　　金：国家自然基金项目(51074062);河北省科技厅项目(12212122D)

摘　　要：通过热模拟试验研究了轧制温度及冷却速度对T700高强结构钢组织转变的影响。结果表明,当终轧温度为890℃时,组织中粒状贝氏体的数量最多,且M/A岛的尺寸也较细小,强度最高;轧后冷却速度对钢的组织性能产生影响,较大的轧后冷却速度是得到所需粒状贝氏体必不可少的条件。The effects of rolling temperature and cooling velocity on the microstructure and properties of T700 were investigated by thermal simulation experiment. The results show that the quantity of granular bainite is maximum and the size of M/A islands is fine, when the finish rolling temperature is 890℃. The cooling velocity has important effects on the microstructure and properties of the steel. A bigger cooling temperature is an important condition to get fine granular bainite.

关 键 词：高强结构钢 轧制温度 冷却速度 

分 类 号：TG113.2[金属学及工艺—物理冶金]