【摘要】 挤压法制备Au合金/Ni19纤维复合材料,经600℃/0.5h处理得到实验样品。利用X射线衍射仪和扫描电镜分析样品的相组成、相结构、固溶情况和拉伸断口形貌。结果表明:样品为AuPdGd固溶体和Ni基相组成,均为面心立方晶系,晶格常数a分别为0.408nm和0.353nm;Au在Ni中的扩散速度大于Ni在Au中的扩散速度;样品的拉伸断口是典型的韧性断口,有利于材料后续加工成型。更多还原

【Abstract】 The samples of Au alloy/Ni19 filamentary composite material were prepared by extrusion method and treated at 600℃ /0.5h.The phase composition and structure,soli d-solubility and tensile fracture surface of the samples were studied by XRD and SEM.The results indicated that the samples consist of AuPdGd solid solution and Ni base phase both with fcc structure,their lattice constants are 0.408nm and 0.353nm,respectively.The diffusivity of Au in Ni is bigger than that of Ni in Au.The tensile fracture surface shows a typical ductile fracture which is advantageous to follow-up processing.更多还原