轧制工艺对低碳贝氏体钢组织和力学性能的影响  

Effects of Rolling Process on Microstructures and Mechanical Properties of Low Carbon Bainitic Steel

作　　者：张慧杰[1] 肖红亮 包耀宗[3] 

机构地区：[1]湖南华菱湘潭钢铁有限公司,湖南湘潭411101 [2]湖南省国际工程咨询中心,湖南长沙410016 [3]钢铁研究总院结构材料研究所,北京100081

出　　处：《热加工工艺》2015年第11期25-28,32,共5页Hot Working Technology

基　　金：国家重点基础研究发展计划973项目(2010CB630805)

摘　　要：研究了控轧控冷工艺条件下低碳贝氏体钢轧制工艺与显微组织和力学性能的关系,比较了不同终轧温度和冷却方式对低碳贝氏体钢组织性能的影响。结果表明:试验钢的组织为具有较好强韧性的下贝氏体,且随着终轧温度的降低,晶粒变形比较严重;试验钢在终轧温度750℃时、水冷+空冷处理后得到较好的强韧性匹配。The relationships between rolling process and microstructures and mechanical properties of low carbon bainitic steel were studied under controlled rolling and controlled cooling process conditions. The influences of several finishing rolling temperatures and cooling methods on microstructures and properties of low carbon bainitic steel were compared. The results indicate that the microstructure of tested steels is lower bainite, which has better strength and toughness match. And with the decreasing of final rolling temperature, the grain deformation is more serious. Tested steels achieve better matching of strength and toughness at the final rolling temperature 750℃ and water cooling＋ air-cooling treatment.

关 键 词：轧制工艺 低碳贝氏体钢 力学性能 

分 类 号：TG335.11[金属学及工艺—金属压力加工]