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Light hard CoCrAlSiNi high-entropy alloy and preparation method thereof

A high-entropy alloy and hard technology, which is applied in the field of light hard CoCrAlSiNi high-entropy alloy and its preparation, can solve the problems of toxic waste, high raw material cost, complicated preparation process, etc., and achieves uniform organization, simple crystal structure and simple operation. Effect

Pending Publication Date: 2022-02-18
INST OF PROCESS ENG CHINESE ACAD OF SCI +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] However, the existing research on high-entropy alloys still has certain limitations. The above-mentioned research on lightweight high-entropy alloys still has many fundamental problems that are difficult to solve, such as high raw material costs, complicated preparation processes, and the generation of toxic waste.

Method used

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  • Light hard CoCrAlSiNi high-entropy alloy and preparation method thereof
  • Light hard CoCrAlSiNi high-entropy alloy and preparation method thereof
  • Light hard CoCrAlSiNi high-entropy alloy and preparation method thereof

Examples

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Effect test

Embodiment 1

[0047] This embodiment provides a light hard CocralSini high entropy alloy and its preparation method thereof, including the steps of:

[0048] (1) The target atom ratio CO: CR: Al: Si: Ni = 1: 1: 1: 1: 1, converted to Co raw materials, CR raw materials, Al raw materials, Si raw materials and NI The quality ratio of the raw material, weighing the purity of 99.99 wt.% Or more CO raw materials, Cr random, Al raw materials, Si raw materials and Ni raw materials, wherein the Si raw material is more than 10 wt.% On the basis of the target atomic ratio;

[0049] The symmetrical CO raw material, Cr random, Al raw material, Si feedstock is cleaned with Ni feedstock, first with deionized water as a cleaning solution, and then use 0.5 mol / L hydrochloric acid solution for pickling, then use no water Ethanol is washed with alcohol, and finally placed in a vacuum drying box for drying;

[0050] Open the humeral door of the self-consuming vacuum arc furnace, will be called the Si raw material...

Embodiment 2

[0054] This embodiment provides a light hard Cocralsini high entropy alloy and a preparation method thereof, based on the light hard Cocralsini high entropy alloy and its preparation method thereof, the difference is only: light hard Cocraalsini high entropy alloy Atom ratio CO: CR: Al: Si: Ni = 0.2: 0.5: 1: 1: 1.

Embodiment 3

[0056] This embodiment provides a light hard Cocralsini high entropy alloy and a preparation method thereof, based on the light hard Cocralsini high entropy alloy and its preparation method thereof, the difference is only: light hard Cocraalsini high entropy alloy Atom ratio CO: CR: Al: Si: Ni = 0.2: 1: 1: 0.3: 1.

[0057] Character method:

[0058] The light hard Cocralsini alloy obtained by Example 1-3 was high entropy alloy, and the Aquiimed drainage method was used for density calculation;

[0059] Epoxy resin is delayed by the light hard Cocralsini high entropy alloy obtained by Example 1-3, and the resin gum substrate ratio is A: B = 2: 1, and the mold is placed in a vacuum drying box after mixing. Slowly solidify for a period of time, grind the same sample of the harder, respectively.

[0060] The test hardness of the TMVP-1 micro-hardness meter is used for the polished sample, which is 1.961N (200GF), which is 15 s; 8 different locations are selected for each sample. Hardn...

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Abstract

The invention provides a light hard CoCrAlSiNi high-entropy alloy and a preparation method thereof. The light hard CoCrAlSiNi high-entropy alloy is composed of Co, Cr, Al, Si and Ni, and the atomic ratio of Co to Cr to Al to Si to Ni is further limited to be (0.1-1): (0.5-1): (0.5-2): (0.1-1): (0.5-1.5), so that the CoCrAlSiNi series high-entropy alloy has the advantages of being simple in crystal structure, uniform in structure, low in density, high in hardness and the like, has good mechanical performance and thermal stability, is a novel light hard high-entropy alloy and can play an important role in the fields of aerospace, ships, military industry, cutting tools, biotechnology and the like; and the preparation method has the advantages of low cost, simplicity in operation, easiness in industrial production and the like.

Description

Technical field [0001] The present invention relates to the field of preparing metal materials, and more particularly to high entropy alloy technology, and specific relates to light rigid CocralSini high entropy alloys and preparation methods thereof. Background technique [0002] The high entropy alloy is composed of at least 5 or more metal elements, and each metal element is percentage of 5% to 35%. Compared to traditional alloys, high entropy alloys have higher strength, hardness, wear resistance, corrosion resistance and thermal stability due to high entropy effects, hysteresis diffusion effects, lattice distortion effects, and cocktail effects. The design concept of high entropy alloy broke through the limitations of traditional concepts, making a new research hotspot in the field of material science and coagulation physics. [0003] High entropy alloy is uniformly mixed with a metal element having a metal element with a metallic element of at least 5 or more metal elements...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C30/00C22C1/02
CPCC22C30/00C22C1/02
Inventor 孟龙谭鸣天曲景奎齐涛
Owner INST OF PROCESS ENG CHINESE ACAD OF SCI
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