High-Fe content Cu-Fe series alloy material and preparation method thereof

Abstract

The invention provides a high-Fe content Cu-Fe series alloy material. Fe, FeS, Mn, Sr and Cu are included in the alloy material. The invention further provides a preparation method of the alloy material. According to the preparation method, the FeS is wrapped with copper skin and further added into copper liquid, surface tension of liquid-state Fe can be lowered obviously through fusion of the FeS, uniform distribution of the Fe in copper is facilitated, and the lamination phenomenon of the Fe in the copper is avoided. The alloy material has high electric conductivity while high strength is achieved.

Description

technical field [0001] The invention belongs to the technical field of metal composite materials, and in particular relates to a Cu-Fe alloy material with high iron content and a preparation method thereof. Background technique [0002] Copper has excellent electrical and thermal conductivity and antimagnetic properties, while iron is a typical ferromagnetic material. The copper-iron composite material prepared with high content of iron and copper not only has high strength, elasticity and wear resistance, good plasticity and thermal conductivity, but also has excellent electrical conductivity, huge magnetoresistance effect and special Physical properties are widely used in the preparation of large-scale integrated circuit lead frames, high-speed electrified railway train overhead wires, electrical engineering switch bridges and resistance welding electrodes. [0003] The Cu-Fe alloy material with high iron content differs from other copper alloys in two points: one is that...

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Problems solved by technology

[0004] In the prior art, for copper-iron alloys with high iron content, the iron phase is usually transformed into nanofibers through strong drawing, so as to achieve the purpose of ultra-high strength and high conductivity. However, the equipment requirements of this preparation process are high, and the prepared products are Silk is the main material, which is relatively simple and has low production efficiency

For copper-iron alloys with high iron content, during the preparation process, especially in the process of smelting and casting, iron and copper are immiscible in the molten state. Polymerization and the problem of delamination due to the certain difference between the specific gravity and the specific gravity of copper will eventually lead to extremely uneven distribution of components, which will cause difficulties in the subsequent processing of the alloy, as well as uneven microstructure and properties of the final product.

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