摘要
采用扫描电子显微镜、能谱仪以及X射线衍射等技术，对Ag-18Cu-30Zn-2Ni合金的铸态组织、相组成及结构进行了分析。结果表明，合金主要由白色基体、细小片层状共晶胞及直径为2~6μm的黑色颗粒相组成；铸态合金的物相组成为面心立方(fcc)晶格结构的Ag基固溶体相、灰色层状共晶相(Ag+Cu64Zn36)及简单立方(sc)晶格结构的近球形黑色颗粒Cu2NiZn相；AgCuZnNi合金的平衡凝固路径为：L→L+γ→(L+α1)+γ→((α2+β)+α1)+γ。
Microstructure and phase structure of as-cast Ag-18Cu-30Zn-2Ni alloy were investigated by means of scanning electron microscope (SEM), energy disperse spectroscopy (EDS) and X-ray diffractometer (XRD). The results indicate that the alloy is mainly composed of the white matrix, fine lamellar eutectic cell and black particles with diameter ranges from 2 to 6 μm. The composition and structure of phases is as below: Ag-based solid solution with face-centered-cubic (fcc) lattice structure,grey lamellar eutectic cell (Ag+Cu64Zn36, fcc) and spherical particle Cu2NiZn with simple-cubic (sc) structure. By combining all the analysis results, solidification path of the AgCuZnNi alloys is obtained:L→L+γ→(L+α1)+γ→((α2+β)+α1) +γ.
作者
李再久
田娟娟
朱绍武
陈家林
金青林
谢明
LI Zaijiu;TIAN Juanjuan;ZHU Shaowu;CHEN Jialin;JIN Qinglin;XIE Ming(State Key Laboratory of Advanced Technologies for Comprehensive Utilization of Platinum Metals, Kunming Institute of Precious Metals, Kunming 650106, China;Faculty of Materials Science and Engineering, Kunming University of Science and Technology, Kunming 650093, China)
出处
《贵金属》
CAS
CSCD
北大核心
2016年第3期6-10,17,共6页
Precious Metals
基金
稀贵金属先进材料协同创新中心协同创新基金(2014XT03)
稀贵金属综合利用新技术国家重点实验室开放课题(SKL-SPM-201545)
