C对Cu-14Fe合金微观组织的影响  

Effects of Carbon on Microstructure of Cu-14Fe Alloys

作　　者：刘秋香[1] 郭炜[1] 邹晋[1] 陆德平[1] Liu Qiuxiang;Guo Wei;Zou Jin;Lu Deping(Jiangxi Key Laboratory of Advanced Copper and Tungsten Materials,Jiangxi Academy of Sciences)

机构地区：[1]江西省科学院江西省铜钨新材料重点实验室,南昌330029

出　　处：《特种铸造及有色合金》2020年第9期1042-1044,共3页Special Casting & Nonferrous Alloys

基　　金：国家自然科学基金资助项目(51561010);江西省自然科学基金资助项目(2014ABC20013);江西省重点研发计划资助项目(20192BBHL80010)。

摘　　要：采用真空感应电炉熔炼制备了Cu-14Fe合金铸锭,利用X射线衍射仪、场发射透射电镜及能谱分析仪,研究了C对Cu-14Fe合金微观组织的影响。结果表明,C的加入使得Cu-14Fe合金中富Fe相呈球状,且较为均匀地分布于Cu基体中。富Fe相是以α-Fe形式存在,且富Fe相中分布着大量纳米尺度的Cu颗粒。此外,C还可促进富Fe相析出,降低Fe在基体中的固溶度。Cu-14Fe alloys ingots with different carbon content were prepared by vacuum induction furnace,and the effects of different carbon content on the microstructure of Cu-14Fe alloys was investigated by X-ray diffraction(XRD),field emission transmission electron microscopy(FE-TEM)and energy spectrum.The results show that the spherical rich-Fe phase in Cu-14Fe is distributed more uniform in copper matrix with carbon addition.The rich-Fe phase exists in form ofα-Fe,and amounts of nano-Cu particles are distributed in the rich-Fe phase.Moreover,carbon element can promote the precipitation of Fe to decrease the solubility of Fe in the copper matrix.

关 键 词：Cu-14Fe合金 C 固溶度 富Fe相 

分 类 号：TG146.11[一般工业技术—材料科学与工程] TG115.21[金属学及工艺—金属材料]