含硅钢下贝氏体中台阶及残余奥氏体层错的透射电镜观察  

INTERFACE LEDGE AND RETAINED AUSTENITE FAULTS OF LOWER BAINITE IN SILICON CONTAINING STEELS

作　　者：张喜燕[1] 康沫狂[1] 陈大明[1] 武小雷[1] 

机构地区：[1]西北工业大学

出　　处：《金属学报》1994年第3期A109-A111,共3页Acta Metallurgica Sinica

摘　　要：用透射电镜研究了６５Ｓｉ２ＭｎＷＡ和４０ＣｒＭｎＳｉＭｏＶＡ钢下贝氏体中台阶及残余奥氏体的精细结构．发现残余奥氏体中有大量层错，并且层错条纹台阶具有对应关系．认为，贝氏体铁素体长大时，台阶有可能沿母相层错面直接切变增厚。Interface ledge and retained austenite fine structure in lower bainite of 40CrMnSiMoVA and 65Si2MnWA steels have been studied by TEM.A large number of faults have been found in retained austenite and these faults correspond to the interface ledges.The results show that it is very possible that ferrite plate of lower bainite thickens by broad face of the interface ledge shearing on the austenite fault face but not side migrating of the ledge

关 键 词：硅钢 贝氏体 组织 精细结构 

分 类 号：TG142.33[一般工业技术—材料科学与工程]