Method for preparing feconicu high-entropy alloy and tic particles composite reinforced copper matrix composite material by vacuum arc melting

Abstract

The invention discloses a method for preparing FeCoNiCu high-entropy alloy and TiC particle composite reinforced copper-based composite material by vacuum arc melting. The steps are as follows: firstly prepare a reaction sample, and put the compacted sample and copper block into a vacuum melting furnace After vacuuming, change the strength of the arc by adjusting the current to make the sample reach a molten state, and repeat the melting three times to make the sample evenly melted. After the reaction is completed, it is cooled and taken out to obtain micro-nano particle FeCoNiCu high-entropy alloy and TiC composite reinforced copper. base composite material. The process of the present invention adopts vacuum smelting to synthesize copper-based composite materials, and the wettability between the obtained reinforcement and the matrix is ​​good, energy saving and time-saving, and the process operation is simple, safe, reliable, and environmentally friendly. Compared with the conventional sintering method, the sample The density and tensile strength are greatly improved.

Description

technical field [0001] The invention relates to an arc melting reaction synthesis method of FeCoNiCu HEA and TiC particle composite reinforced copper-based composite material, which belongs to the field of material preparation. Background technique [0002] Vacuum arc melting is an electrothermal metallurgical method that uses electric energy to generate an arc between electrodes or electrodes and the material to be melted to melt metals. The reaction temperature of this method to generate reinforcement is higher than that of conventional heating, and the prepared sample has good tissue compactness. This method is environmentally friendly, unmanned, simple to operate and good in stability, and at the same time has the advantages of uniform distribution of reinforcements and tight collective integration. The most important thing is that the prepared material has superior performance and strong molding ability. High-entropy alloy is a new type of material with high strength,...

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Problems solved by technology

[0003] At present, the literature (Bagheri G A. The effect of reinforcement percentages on properties of copper matrix composites reinforced with TiC particles[J].Journal of Alloys & Compounds, 2016, 676:120-126.) uses Ti-C-Cu powder as raw material , using the mechanical alloying method to synthesize Cu-TiC composite materials, but the reaction process is greatly affected by external factors, and the ball milling medium material is easy to cause pollution and the oxidation of the powder is difficult to solve

Literature (Li Yueying, Ni Yuyu, Zhu Fuwen. Research on TiC particle-reinforced copper-based composite materials[J]. Powder Metallurgy Technology, 2018(2).) Electrolytic copper powder and TiC powder were used as raw materials to obtain composite materials by powder metallurgy. However, the formed particles are all coarse, so there is a problem of interfacial bonding, and there are difficulties in adding the reinforcing phase, complex process, high cost, and it is difficult to avoid reinforcement agglomeration

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