Abstract:Advanced copper-based materials have a broad market and good development prospects. Compared with Cu-Be, Cu-Fe-P, Cu-Cr and other alloys, Cu-Ni-Si alloys have the advantages of high strength, high conductivity, good high temperature softening resistance, stress relaxation resistance and low price, so they are widely used in various industrial fields such as machinery manufacturing, aerospace, transportation, electronics and electrical engineering. In this paper, the development status of Cu-Ni-Si alloys was introduced, and the differences between domestic and foreign alloys were described in terms of product performance and industrialization. The core challenge was to maintain or even improve the conductivity while improving the strength, and due to the complexity of the service environment and the extension of the service time, the service performance reliability and stability of the material were also more stringent. Finally, the research status of Cu-Ni-Si alloys was reviewed from the aspects of composition design, processing, deformation heat treatment process, aging precipitation behavior, service performance, etc., and the future development trend of high-strength and high-conductivity copper alloys was expected in view of the current shortcomings of this material.