Properties and precipitates of the high strength and electrical conductivity Cu-Ni-Co-Si-Cr alloy

In this paper, a novel Cu-1.5Ni-1.1Co-0.6Si-0.1Cr (wt.%) alloy with high strength and electrical conductivity was designed. After aging, excellent properties of 857±12 MPa yield strength, 300±8 HV microhardness, 42.8 ± 2.5% IACS conductivity, and 7 ± 0.5% elongation were obtained. According to the atomic structure, part of Ni atoms in Ni2Si can be replaced by Co atoms to form nano-precipitates (Ni, Co)2Si. The alloy's high strength and...