35CrMnSiA钢片状马氏体和贝氏体TEM研究  

TEM analysis of plate martensites and bainites in 35CrMnSiA steel

作　　者：张金民[1] 文九巴[2] 王嘉敏[1] 周浩[1] 史鑫[1] 

机构地区：[1]洛阳船舶材料研究所,河南洛阳471039 [2]河南科技大学材料科学与工程学院,河南洛阳471003

出　　处：《金属热处理》2008年第9期84-86,共3页Heat Treatment of Metals

摘　　要：利用透射电镜对35CrMnSiA钢中的片状马氏体和贝氏体特征进行了研究。结果表明,35CrMnSiA钢中的马氏体为片状孪晶马氏体,孪生面为(112)。在马氏体孪晶形成时,中脊快速切变应力诱发两侧马氏体的形成,并与两侧马氏体保持孪晶关系以降低形核功及应变能。分析讨论了平行排列的片状马氏体的形成机理,35CrMnSiA钢中片状马氏体的硅含量高于贝氏体的硅含量,贝氏体相变属于扩散型相变。Characteristics of plate martensites and bainites in 35CrMnSiA steel were studied by transmission electron microscopy（TEM）. The results show that the martensites in 35 CrMnSiA steel are plate twin martensites. Its twinning plane is （ 112）. The fast shear transformation of martensite median ridge induces the formation of both sides martensites. And medium martensite with the both sides martensites remain the twin relationship to lower martensite nucleation work and the volume strain energy. The formation mechanism of parallel arrayed plate martensites was analyzed. The Si content in martensites is higher than that in bainites. Bainites transformation belongs to diffusion transformation.

关 键 词：片状马氏体 马氏体相变 孪晶 贝氏体相变 

分 类 号：TG111.5[金属学及工艺—物理冶金] TG142.33[金属学及工艺—金属学]