Entity

Time filter

Source Type


Wang W.-F.,Hefei University of Technology | Wang W.-F.,Anhui Engineering Laboratory of Non Ferrous Metals and Processing | Wu W.-Y.,Hefei University of Technology | Wu W.-Y.,Anhui Engineering Laboratory of Non Ferrous Metals and Processing | And 2 more authors.
Cailiao Rechuli Xuebao/Transactions of Materials and Heat Treatment | Year: 2011

AgCu20Ni2 supersaturated alloy powders were prepared by mechanical alloying and AgCu20Ni2 alloy was fabricated by method of powder metallurgy using the powders. Microstructure, physical properties of the AgCu20Ni2 alloy was examined, and the effect of sintering process and cold deformation on properties of the alloy was also discussed. The results show that the nanocrystalline AgCu20Ni2 alloy powders are obtained after high energy milling for 30 h. The microstructure of AgCu20Ni2 alloy consists of Ag-rich-α matrix and precipitates β phase which disperse uniformly in the matrix strengthening the alloy. SEM observation and EDS analysis of fracture surface show that the AgCu20Ni2 alloy exhibits ductile fracture features under bending loading. Source


Wu W.-Y.,Hefei University of Technology | Wu W.-Y.,Anhui Engineering Laboratory of Non Ferrous Metals and Processing | Wang W.-F.,Hefei University of Technology | Wang W.-F.,Anhui Engineering Laboratory of Non Ferrous Metals and Processing | And 4 more authors.
Hangkong Cailiao Xuebao/Journal of Aeronautical Materials | Year: 2011

The X-ray diffraction (XRD), scanning electron microscope (SEM) and transmission electron microscope (TEM) were used to analyze the formation of supersaturated Ag90Ni10 phase and the effect of adding rare earth Sm and alloy element Cu on the mechanical alloying process. The change of the lattice parameters and grain size for all the supersaturated powders after annealed were also measured. Then the microstructure, density, hardness and resistivity of the samples were measured after being prepared by the method of powder metallurgy. The results of the precise determination of the lattice parameters by XRD showed that after mechanical alloying for 60 hours, the nanocrystalline Ag-Ni powders were obtained and the maximum solid solubility of Ni in Ag was reached 2.87at%. Both the rare earth Sm and alloy element Cu could accelerate the mechanical alloying process, reduce the ultimate grain size of powders, especially the Sm. The alloy element of Cu could improve the density, hardness and conductivity of the alloy. Source

Discover hidden collaborations