贝氏体铁素体和残余奥氏体取向关系  

Orientation Relationship Between Bainitic Ferrite and Retained Austenite

作　　者：顾英妮[1] 李晶晶 孟凡妍[3] 姜江[3] 李凤照[3] 孟祥敏[4] 

机构地区：[1]济南大学机械工程学院,山东济南250022 [2]新思公司,美国加尼福尼亚圣合塞94043 [3]山东大学材料科学与工程学院,山东济南250061 [4]中国科学院理化技术研究所,北京100190

出　　处：《钢铁》2013年第11期67-71,共5页Iron and Steel

基　　金：山东省基金资助项目(31370005200807)

摘　　要：用分析电镜和高分辨电镜确定了贝氏体钢中贝氏体铁素体和残余奥氏体之间存在3种取向关系。其中一种为K-S关系,即[110]γ′//[111]α,(111)γ′//(110)α;一种为N-W取向关系,即[110]γ′//[001]α,(111)γ′//(110)α;还有一种为G-T关系,即[112]γ′//[110]α,(111)γ′//(110)α。高分辨像显示,贝氏体铁素体-奥氏体相界面不平直,α和γ′两相内有系列刃型位错和结构小台阶,两相界面未显示出连续的严格共格关系。The orientation relationship between bainitic ferrite and retained austenite in bainitic steels were deter- mined with analysed transmission electronic microscope （TEM） and high resolution transmission electronic micro scope （HRTEM）. The results show that there are three kinds of orientation relationships between bainitic ferrite and retained austenite： namely K-S, [110]y＇//[111]a, （111）y＇//（110）a ; N- W, [110]y＇//[001]a, （111）y＇//（110）oand G-T, [112]y＇//[110]a, （111）y＇//（ 110）a orientation relationships. The high resolution images reveal that the in-terface of two phases is not straight and that there are series of edge dislocation and small structure-ledges, and it is not reveal continuous stringent coherent relationship.

关 键 词：贝氏体铁素体 残余奥氏体 取向关系 高分辨像 

分 类 号：TG142.2[一般工业技术—材料科学与工程]