碳铬共渗奥氏体不锈钢的组织结构  

STRUCTURE OF CARBOCHROMIZED AUSTENITE STAINLESS STEELS

作　　者：张振信[1] 孙文山[1] 

机构地区：[1]哈尔滨科学技术大学

出　　处：《金属热处理学报》1994年第2期24-29,共6页

摘　　要：采用透射电镜和Ｘ射线衍射技术研究了奥氏体不锈钢碳铬共渗层的组织结构。结果表明：在碳铬共渗过程中，先在渗层中形成Ｃｒ＿（２３）Ｃ＿６型碳化物，它与母相奥氏体（Ａ）之间具有的取向关系。进一步提高表面碳含量可生成Ｃｒ＿７Ｃ＿３型碳化物。表面碳含量越高，所生成的Ｃｒ＿７Ｃ＿３碳化物越多，而Ｃｒ＿（２３）Ｃ＿６型碳化物则减少。This paper deals with the structure of carbochromized austenite stainless steels by TEM and X-ray diffraction techniques. It is indicated Cr_(23)C_6 carbides are formed during carbochromozing first and it has a orientation relationship with the matrix of austenite(A), that isAs the further increase of carbon content in the case,the Cr_7C_3 carbide then presents. Thehigher the carbon content is,the more the carbide Cr_7C_3 presents,but the Cr_(23) C_6 carbide decreases.The final structure of carbochromized ZGlCrl8Ni9 steel from surfaceto core is

关 键 词：碳铬共渗 奥氏体不锈钢 碳化物 

分 类 号：TG161.8[金属学及工艺—热处理]