Engineering Research Center of High Performance Copper Alloy Materials and Processing, Ministry of Education, Hefei University of Technology, Hefei 230009, China; School of Materials Science and Engineering, Hefei University of Technology, Hefei 230009, China
Abstract：In this paper, three Cu-15Cr-15W composite powders were prepared by high energy ball milling and mechanical mixing, and then Cu-15Cr-15W alloy was prepared by spark plasma sintering (SPS). The effects of different mixing processes on the microstructure, physical and mechanical properties of the alloy were studied. The results show that the Cu-15Cr-15W composite powder prepared by first high-energy ball milling of Cr and W powders is mechanically mixed with Cu powder, and the microstructure of the copper alloy obtained by SPS is fine and uniform, the density is up to 99.3%, and the performance is better than the same. The Cu-30Cr alloy prepared by the SPS process has a conductivity of 2.95×107 S/m, a thermal conductivity of 212.0 W/(m·K), a Vickers hardness of 152 HV0.5, and a tensile strength and elongation of 365 MPa and 11.5%.
2020, Vol. 30 
