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Fe-Mn-Ni-Cr four-component high-entropy alloy

A fe-mn-ni-cr, high-entropy alloy technology, applied in the field of high-entropy alloys, can solve the problems of low room temperature strength and high production cost, and achieve the effects of improving mechanical properties, small difference in atomic radius, and improving strength and plasticity

Active Publication Date: 2020-04-03
ZHENGZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The purpose of the present invention is to solve the problems of high production cost and low room temperature strength of the traditional high-entropy alloy FeNiCoMnCr, and provide a high-entropy alloy with four components of Fe-Mn-Ni-Cr. The present invention effectively reduces the The production cost is reduced, and by adjusting the iron-manganese ratio, the alloy is induced to produce twins at room temperature, which effectively improves the mechanical properties of the alloy at room temperature

Method used

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  • Fe-Mn-Ni-Cr four-component high-entropy alloy

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Embodiment 1

[0035] A Fe-Mn-Ni-Cr four-component high-entropy alloy, the alloy expression is Fe 55 mn 20 Ni 10 Cr 15 , denoted as S-1. As a more detailed example, its preparation method and related tests include the following steps:

[0036] (1) Batching: select Fe with a purity of 99.9wt%, Mn with a purity of 99wt%, Ni with a purity of 99.99wt%, and Cr with a purity of 99.99wt%, carry out the ingredients according to the above alloy expression, before weighing the raw materials , remove impurities such as oxide films on the surface of raw materials with sandpaper or a grinder, and then put the raw materials Fe, Ni and Cr into a beaker filled with absolute ethanol, perform ultrasonic cleaning for 250S, and then completely dry them with a hair dryer. Mn was washed with dilute nitric acid with a volume fraction of 5% to remove scale, followed by two washes in absolute ethanol, and then completely dried with a hair dryer;

[0037] (2) Melting master alloy and suction casting: In the vacu...

Embodiment 2

[0043] A Fe-Mn-Ni-Cr four-component high-entropy alloy, the alloy expression is Fe 50 mn 25 Ni 10 Cr 15 , denoted as S-2. As a more detailed example, its preparation method and related tests include the following steps:

[0044] (1) Batching: select Fe with a purity of 99.9wt%, Mn with a purity of 99wt%, Ni with a purity of 99.99wt%, and Cr with a purity of 99.99wt%, carry out the ingredients according to the above alloy expression, before weighing the raw materials , remove impurities such as oxide films on the surface of raw materials with sandpaper or a grinder, and then put the raw materials Fe, Ni and Cr into a beaker filled with absolute ethanol, perform ultrasonic cleaning for 300S, and then completely dry them with a hair dryer. Mn was washed with dilute nitric acid with a volume fraction of 5% to remove scale, followed by two washes in absolute ethanol, and then completely dried with a hair dryer;

[0045] (2) Melting master alloy and suction casting: In the vacu...

Embodiment 3

[0052] A Fe-Mn-Ni-Cr four-component high-entropy alloy, the alloy expression is Fe 50 mn 25 Ni 10 Cr 15 , denoted as S-3. As a more detailed example, its preparation method and related tests include the following steps:

[0053] (1) Batching: select Fe with a purity of 99.9wt%, Mn with a purity of 99wt%, Ni with a purity of 99.99wt%, and Cr with a purity of 99.99wt%, carry out the ingredients according to the above alloy expression, before weighing the raw materials , remove impurities such as oxide films on the surface of raw materials with sandpaper or a grinder, and then put the raw materials Fe, Ni and Cr into a beaker filled with absolute ethanol, perform ultrasonic cleaning for 240S, and then completely dry them with a hair dryer. Mn was washed with dilute nitric acid with a volume fraction of 5% to remove scale, followed by two washes in absolute ethanol, and then completely dried with a hair dryer;

[0054] (2) Melting master alloy and suction casting: In the vacu...

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Abstract

The invention relates to an Fe-Mn-Ni-Cr four-component high-entropy alloy. The alloy expression of the Fe-Mn-Ni-Cr four-component high-entropy alloy is FeaMnbNicCrd, wherein a, b, c and d of the alloyexpression represent the atomic percentage of corresponding components and meet the following conditions: a 38-57, b 18-37, c 8-15, and d 10-17; and a+b+c+d=100. The Fe-Mn-Ni-Cr four-component high-entropy alloy provided by the invention has a series of advantages of high strength, good plasticity, corrosion resistance and the like, and is simple in preparation process and low in production cost.

Description

technical field [0001] The invention belongs to the technical field of high-entropy alloys, and in particular relates to a high-entropy alloy with four components of Fe-Mn-Ni-Cr. Background technique [0002] Traditional alloys usually consist of one major element and small amounts of other elements, such as aluminum alloys, magnesium alloys, titanium alloys, nickel superalloys, and steel. Due to the requirements of mechanical properties or other properties, such as strength and oxidation resistance, alloys used in traditional industries usually have a multi-phase structure, while materials with a single-phase structure, such as pure nickel, usually cannot meet the requirements of industrial production. In recent years, a new approach to alloy design has emerged. The purpose of this new alloy design method is to maximize the entropy of mixing to produce alloys with a single-phase solid solution, which are called high-entropy alloys. Due to the mixing of multiple components ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C38/58C22C30/00C21D1/26C21D6/00C21D8/00C22C33/04
CPCC21D1/26C21D6/004C21D6/005C21D8/005C22C30/00C22C33/04C22C38/58
Inventor 张开盛魏然李福山刘士磊陈辰王坦张锁黎文强凡艳舟张伟伟苗家凯王伟
Owner ZHENGZHOU UNIV
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