Cu_(90)Zr_(10-x)Al_x(x=1, 3, 5, 7, 9; at.%) alloy rods were synthesized based on rapid solidification method. The structure, distribution of elements, mechanical properties and electrical conductivity of the Cu-based ...Cu_(90)Zr_(10-x)Al_x(x=1, 3, 5, 7, 9; at.%) alloy rods were synthesized based on rapid solidification method. The structure, distribution of elements, mechanical properties and electrical conductivity of the Cu-based alloy samples were studied using X-ray diffraction(XRD), scanning electron microscope(SEM), electro-probe micro-analyzer(EPMA), uniaxial compression test and four-probe technique. The as-cast Cu_(90)Zr_(10-x)Al_x(x=1, 3, 5; at.%) alloy rods with a diameter of 2 mm exhibit good mechanical properties and electrical conductivity, i.e., high compressive yield strength of 812-1513 MPa, Young's modulus of 52-85 GPa, Vickers hardness of 250-420 and electrical conductivity of 11.1%-12.6% IACS(International Annealed Copper Standard). The composite microstructure composed of high density fibrous duplex structure(Cu_5Zr and α-Cu phases) is thought to be the origin of the high strength.展开更多
基金supported by the National Natural Science Foundation of China(Nos.51301029 and 51375071)the Fundamental Research Funds for the Central Universities,China(No.DUT11RC(3)86)
文摘Cu_(90)Zr_(10-x)Al_x(x=1, 3, 5, 7, 9; at.%) alloy rods were synthesized based on rapid solidification method. The structure, distribution of elements, mechanical properties and electrical conductivity of the Cu-based alloy samples were studied using X-ray diffraction(XRD), scanning electron microscope(SEM), electro-probe micro-analyzer(EPMA), uniaxial compression test and four-probe technique. The as-cast Cu_(90)Zr_(10-x)Al_x(x=1, 3, 5; at.%) alloy rods with a diameter of 2 mm exhibit good mechanical properties and electrical conductivity, i.e., high compressive yield strength of 812-1513 MPa, Young's modulus of 52-85 GPa, Vickers hardness of 250-420 and electrical conductivity of 11.1%-12.6% IACS(International Annealed Copper Standard). The composite microstructure composed of high density fibrous duplex structure(Cu_5Zr and α-Cu phases) is thought to be the origin of the high strength.
