Method of regulating performance of CoCrFeNiCu high-entropy alloy

A high-entropy alloy and performance technology, which is applied in the field of regulating the microstructure and mechanical properties of CoCrFeNiCu high-entropy alloys, can solve the problems of general alloy performance, long processing cycle, and complicated operation, and achieve high safety, easy operation, and convenient operation. Effect

Inactive Publication Date: 2018-03-09
LIAONING UNIVERSITY OF TECHNOLOGY
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Problems solved by technology

Most of these methods have problems such as high energy consumption, high cost

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  • Method of regulating performance of CoCrFeNiCu high-entropy alloy
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  • Method of regulating performance of CoCrFeNiCu high-entropy alloy

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[0029] The present invention will be further described in detail below in conjunction with the accompanying drawings, so that those skilled in the art can implement it with reference to the description.

[0030] Such as figure 1 as shown,

[0031] In a specific embodiment of the present invention, a method for regulating and controlling the properties of a CoCrFeNiCu high-entropy alloy, the specific steps include:

[0032] Material preparation: Prepare Co, Cr, Fe, Ni, Cu elemental pure metal raw materials with a purity greater than 99.8%, and cut larger blocks, plates, strips, bars, etc. into smaller blocks and bars that are easy to use material etc. Weigh raw materials Co, Cr, Fe, Ni, Cu in equimolar ratio. The molar ratio of any two elements of the raw materials is 1:1. Weigh Co=295.55g; Cr=260.50g; Fe=279.78g; Ni=294.05g; Cu=318.37g.

[0033] Filling: Put the weighed raw materials Co, Cr, Fe, Ni, Cu into the magnesia crucible in order of melting point from low to high ...

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Abstract

The invention discloses a method of regulating performance of a CoCrFeNiCu high-entropy alloy. The method is characterized by comprising the following steps: smelting raw materials Co, Cr, Fe, Ni andCu in equal molar weight with elements in a crucible by means of a smelting method, and smelting the melt at a high temperature continuously for no less than 10min; stretching a pulse electrode into the melt stopped in heating, and processing the pulse electrode for 30-90s with pulse, the voltage of which is not smaller than 100V and the frequency of which is not smaller than 5Hz, to obtain a CoCrFeNiCu high-entropy alloy; and naturally cooling the CoCrFeNiCu high-entropy alloy to room temperature and taking out a cast ingot from the crucible to obtain a CoCrFeNiCu high-entropy alloy cast ingot. According to the method disclosed by the invention, an electric pulse treatment method is applied to a preparation process of the high-entropy alloy to prepare the high hardness and high strength alloy, the yield strength of which is improved by about 233.3% and the breaking strength of which is improved by about 18.4%; and meanwhile, the invention provides a regulating method which is small inenergy consumption, low in cost, simple to operate or short in treatment period and can regulate the performance of the alloy.

Description

technical field [0001] The invention relates to a method for regulating the microstructure and mechanical properties of a CoCrFeNiCu high-entropy alloy, in particular to a method for regulating and improving the microstructure and mechanical properties of a CoCrFeNiCu high-entropy alloy by means of electric pulse treatment. Background technique [0002] The development of traditional alloy systems has become saturated, and breaking through the development framework of traditional alloys based on one or two metal elements has become a goal pursued by metallurgical scientists. High-entropy alloys are developed under this trend. The research on high-entropy alloys is forward-looking and has academic research and application value. Due to the diversification of application potential and the diversification of industries, the upgrading of traditional alloy industry and the development of high-tech industry will also open up unlimited space for high-entropy alloys, which is undou...

Claims

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Application Information

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IPC IPC(8): C22C1/02C22C30/02B22D27/02
CPCB22D27/02C22C1/02C22C30/02
Inventor 刘亮郭勇赵作福齐锦刚王冰张越商剑
Owner LIAONING UNIVERSITY OF TECHNOLOGY
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