Copper-based composite powder of iron-based amorphous reinforced copper-based alloy formed by selective laser melting

Abstract

The invention discloses copper-based composite powder of iron-based amorphous reinforced copper-based alloy formed by selective laser melting. The copper-based composite powder is characterized in that the iron-based amorphous reinforced copper-based alloy is prepared by using the copper-based composite powder with the particle size of 40-50 mu m as a forming material and adopting a selective laser melting method, wherein the copper-based composite powder is mainly composed of iron-based amorphous powder and copper alloy powder according to the mass ratio of 1: 9-1: 7. The copper-based composite powder has the advantages that in the selective laser melting forming process of the copper-based composite powder, liquid phase separation occurs, spherical amorphous iron particles are formed through self-assembly, and the amorphous iron particles are dispersed and distributed in a copper-rich matrix; and the iron-based amorphous reinforced copper-based alloy has excellent comprehensive properties such as high strength, high corrosion resistance, high wear resistance and high thermal conductivity.

Description

technical field [0001] The invention relates to a copper-based composite powder of an iron-based amorphous reinforced copper-based alloy formed by laser selective melting, and belongs to the technical field of laser additive manufacturing. Background technique [0002] Copper alloy is an alloy composed of pure copper as the base and adding one or several other elements. Because of its high strength and toughness, it has broad application prospects in the industrial field, such as for making generators, wires, cables, Switchgear, transformers and other electrical equipment, as well as heat exchangers, pipes, flat plate collectors for solar heating devices and other heat conduction devices. [0003] However, due to the insufficient strength, wear resistance and heat resistance of copper alloys, the application of copper alloys is largely limited. Particle-reinforced copper-based alloys introduce second-phase particles such as fibers, whiskers, ceramics and other high-strength...

AI Technical Summary

Problems solved by technology

However, there is no literature report on the use of iron-based amorphous alloys as a reinforcing phase to improve the performance of copper-based alloys, especially not fully suitable for the characteristics of laser selective melting forming, which can be successfully used to prepare large-sized, complex-structured, crack-free Copper-based composite powder of iron-based amorphous reinforced copper-based alloy with high strength, high conductivity, high wear resistance and high corrosion resistance