Overaging Phenomenon of Fe-2% Mn-Sb-Ce Structural Steels during Tempering  

作　　者：郭爱民 袁泽喜 沈东东 贾娟 

机构地区：[1]Research Institute of Wuhan Iron & Steel (Group) Company [2]Wuhan University of Science and Technology

出　　处：《Journal of Rare Earths》2003年第S1期210-214,共5页稀土学报（英文版）

基　　金：ProjectsupportedbytheNationalNaturalScienceFoundationofHubeiProvince

摘　　要：The temper embrittlement of Fe-2%Mn-Sb-Ce structure steels was studied by measurements of the ductile-brittle transition temperature and observations by AES and SEM of the fracture surface of isothermally embrittle steel. It shows that Sb and Mn can produce non-equilibrium co-segregation to grain boundaries and bring about the temper embrittlement of Fe-2%Mn-Sb-Ce structure steels. Cerium may reduce the temper embrittlement of the steels and the segregation of cerium to grain boundaries may play an important part in reducing the temper embrittlement of the steels.The temper embrittlement of Fe-2%Mn-Sb-Ce structure steels was studied by measurements of the ductile-brittle transition temperature and observations by AES and SEM of the fracture surface of isothermally embrittle steel. It shows that Sb and Mn can produce non-equilibrium co-segregation to grain boundaries and bring about the temper embrittlement of Fe-2%Mn-Sb-Ce structure steels. Cerium may reduce the temper embrittlement of the steels and the segregation of cerium to grain boundaries may play an important part in reducing the temper embrittlement of the steels.

关 键 词：temper embrittlement NON-EQUILIBRIUM CO-SEGREGATION CERIUM AES rare earths 

分 类 号：TG115[金属学及工艺—物理冶金]