采用机械振动辅助搅拌方法制备了新型高强导电材料Cu-8Ni-15Zn-1.5Al-0.1Y,并测试分析了材料的显微组织、物相组成、导电性能、力学性能和耐腐蚀性能。结果表明,该新型材料兼具较高的导电性能、力学性能和耐腐蚀性能。与常规导电材料Cu-...采用机械振动辅助搅拌方法制备了新型高强导电材料Cu-8Ni-15Zn-1.5Al-0.1Y,并测试分析了材料的显微组织、物相组成、导电性能、力学性能和耐腐蚀性能。结果表明,该新型材料兼具较高的导电性能、力学性能和耐腐蚀性能。与常规导电材料Cu-8Ni-15Zn-1.5Al相比,该新型材料的电导率增加54%,抗拉强度增加43%,屈服强度增加48%,伸长率增加121%,腐蚀电位正移143 m V。展开更多
Abstract: The microstructure and properties of heavily deformed Cu-Ag-Ce in situ nano-filamentary composite were studied in this paper. As cast, copper matrixes were dendritic and Ag-rich phases, some of which present...Abstract: The microstructure and properties of heavily deformed Cu-Ag-Ce in situ nano-filamentary composite were studied in this paper. As cast, copper matrixes were dendritic and Ag-rich phases, some of which present spheroidizing tendency, were embedded in Cu dentritic arms. After heavily deforming, Ag-rich phases develop into fibers: the thick fibers with a size of more than 50 nm and the thin ones with a size of less than 30 nm. Strengthening of Cu-Ag-Ce in situ nano-filamentary composite could be divided into two stages and the combination of different strength and conductivity could be obtained through controlling reducing area, intermediate heat treatment and stabilizing treatment. The results revealed that heavily deformed Cu-Ag-Ce in situ nano-filamentary composite had high strength ( >1.5GPa) and high conductivity(>65%IACS).展开更多
文摘采用机械振动辅助搅拌方法制备了新型高强导电材料Cu-8Ni-15Zn-1.5Al-0.1Y,并测试分析了材料的显微组织、物相组成、导电性能、力学性能和耐腐蚀性能。结果表明,该新型材料兼具较高的导电性能、力学性能和耐腐蚀性能。与常规导电材料Cu-8Ni-15Zn-1.5Al相比,该新型材料的电导率增加54%,抗拉强度增加43%,屈服强度增加48%,伸长率增加121%,腐蚀电位正移143 m V。
文摘Abstract: The microstructure and properties of heavily deformed Cu-Ag-Ce in situ nano-filamentary composite were studied in this paper. As cast, copper matrixes were dendritic and Ag-rich phases, some of which present spheroidizing tendency, were embedded in Cu dentritic arms. After heavily deforming, Ag-rich phases develop into fibers: the thick fibers with a size of more than 50 nm and the thin ones with a size of less than 30 nm. Strengthening of Cu-Ag-Ce in situ nano-filamentary composite could be divided into two stages and the combination of different strength and conductivity could be obtained through controlling reducing area, intermediate heat treatment and stabilizing treatment. The results revealed that heavily deformed Cu-Ag-Ce in situ nano-filamentary composite had high strength ( >1.5GPa) and high conductivity(>65%IACS).