Abstract
Cu90Zr10-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 Cu90Zr10-xAl 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 (Cu5Zr and α-Cu phases) is thought to be the origin of the high strength.
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Male, born in 1960, Ph. D., Professor. His research mainly focused on the electromagnetic modification technology of light alloys, bulk metallic glasses and amorphous ribbon.
This study was financially supported by the National Natural Science Foundation of China (Nos. 51301029 and 51375071) and the Fundamental Research Funds for the Central Universities, China (No. DUT11RC(3)86).
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Zhou, Bw., Jiang, X., Yin, Sj. et al. Microstructures and properties of rapidly solidified Cu90Zr10-x Al x alloys. China Foundry 13, 262–268 (2016). https://doi.org/10.1007/s41230-016-6021-y
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DOI: https://doi.org/10.1007/s41230-016-6021-y