X100热轧钢带的成分设计  

Research on alloy design for X100 hot-rolled strip steel

作　　者：贾书君 段琳娜 刘清友 

机构地区：[1]中国钢研科技集团公司工程用钢研究所,北京100081

出　　处：《材料热处理学报》2012年第12期76-81,共6页Transactions of Materials and Heat Treatment

基　　金：国家"十一五"支撑计划项目(2006BAE03A15)

摘　　要：通过热模拟实验的方法研究了合金元素C、Mo、Nb含量对X100管线钢带的微观组织和显微硬度的影响。结果表明,随着C、Mo、Nb含量增加,实验钢显微组织中的板条贝氏体比例增加,显微硬度明显提高。但是,C、Mo含量较高时,钢中的马氏体/奥氏体(M/A)组元含量增加,尺寸增大。通过对碳当量的讨论得出,X100热轧钢带的合金设计应该综合考虑各种合金元素的影响,碳当量最好能控制在0.55附近。最后针对X100热轧钢带提出了一个优化的成分范围。Effect of C, Mo and Nb on microstructure and microhardeness of X 100 pipeline steel was studied. The results show that with the increasing of C, Mo and Nb content , the volume fraction of lath bainite increases, as well as the microhardeness of the steel improves significantly, but when the content of C, Mo is higher, the volume fraction of M/A islands is more and the its size is bigger. The alloy design for X100 pipeline steel should consider the combination effect of all the alloying elements by discussing the carbon equivalent. Finally, an optimized composition range is obtained for X100 hot-rolled strip steel based on the experiments.

关 键 词：X100热轧钢带 成分设计 微观组织 显微硬度 碳当量 

分 类 号：TG142.1[一般工业技术—材料科学与工程]