摘要
利用扫描电镜配合能谱对铜铬铁新型真空开关触头材料的显微组织、合金元素分布、相组成及拉伸断口形貌进行了观察研究，探讨了第三组元Ｆｅ的作用机理。结果表明，铜铬铁合金为两相合金，以Ｃｕ为基体的固溶体相和以Ｃｒ为基体的固溶体相。Ｆｅ主要分布于Ｃｒ相中，Ｆｅ的存在有五个方面的作用。铜铬铁合金拉伸断口为穿晶断裂型式。
In this paper,the microstructure,alloy element scatter,tensile fractography and the composition of phase of CuCrFe vacuum contact materials are observed by Scanning Electron Microscopy.The effect mechanism of Fe in CuCrFe alloy is investigated. The results of observation show that CuCrFe alloy has a structure of two phases which are Cu base solid solution phase and Cr base solid solution phase. Fe element scatter mainly in Cr base solid solution phase. Fe element have five sorts of effect in CuCrFe alloys. The tensile fracture of CuCrFe alloy is cross-grain fracture.
出处
《机械工程材料》
CAS
CSCD
1994年第2期43-45,55,共4页
Materials For Mechanical Engineering
