Cu-Ni-Si-Co-Ti-RE copper alloy and preparation method thereof

Abstract

The invention discloses a Cu-Ni-Si-Co-Ti-Re copper alloy. The Cu-Ni-Si-Co-Ti-Re copper alloy comprises the following components in percentage by weight: 0.5%-2.0% of Ni, 0.2%-0.9% of Si, 0.5%-2.0% of Co, 0.1%-0.5% of Ti, 0.05%-0.2% of RE and the balance Cu, wherein RE is one or more of Ce, La and Y. The Cu-Ni-Si-Co-Ti-Re copper alloy has tensile strength sigma b which can reach 800-1000 MPa, plastic ductility sigma of 3-10%, electrical conductivity of 45%-55% of IACS, anti-stress-relaxation property greater than or equal to 80% (working for 1000 hours at a temperature of 200 DEG C). The invention further discloses a preparation method for the Cu-Ni-Si-Co-Ti-Re copper alloy.

Description

technical field

[0001] The invention relates to the technical field of copper alloy materials, in particular to a Cu-Ni-Si-Co-Ti-RE copper alloy and a preparation method thereof. Background technique

[0002] High-strength and high-elasticity copper alloy has excellent characteristics such as high strength, good elasticity, fatigue resistance, small elastic hysteresis, and corrosion resistance. It is widely used to manufacture electronics, electricity, communications, instruments, meters, telecommunications, light industry, machinery, and chemical industry. , In the coal industry, it is widely used in the manufacture of various elastic reeds, electrical contacts, spot welding poles, explosion-proof tools, etc. And because of its stable performance and long service life, it is widely used in special components in important military sectors such as aviation, aerospace, weapons, ships, and radar systems, mainly electrical contact devices, connector components and relay devices....

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