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Method for designing components of high-entropy alloy based on electronic alloy theory

A technology for high-entropy alloy and composition design, which is applied in design optimization/simulation, calculation, data processing application, etc., and can solve problems such as the inability to effectively guide the composition design of high-entropy alloys

Active Publication Date: 2020-10-20
SHANGHAI UNIV OF ENG SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] The purpose of the present invention is to overcome the defect that the prior art cannot effectively guide the design of high-entropy alloy components, and provide a method for guiding the design of high-entropy alloy components

Method used

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  • Method for designing components of high-entropy alloy based on electronic alloy theory
  • Method for designing components of high-entropy alloy based on electronic alloy theory
  • Method for designing components of high-entropy alloy based on electronic alloy theory

Examples

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Effect test

Embodiment 1

[0033] A method for designing high-entropy alloy components based on electronic alloy theory, the steps of which are:

[0034] (1) The target high-entropy alloy is CoFeNiMnV 0.25 , using the cluster method to calculate the target high-entropy alloy CoFeNiMnV 0.25 The average Md value of and average Bo value

[0035] (2) Obtain the phase structure of the target high-entropy alloy according to the relationship between the average Md value and the average Bo value, specifically:

[0036] Therefore: The target high-entropy alloy should be FCC single phase in the as-cast state;

[0037] (3) Obtain the atomic percentage of each component according to the phase structure and expression of the target high-entropy alloy (specifically: Co 23.53％ , Fe 23.53％ 、Ni 23.53％ , Mn 23.53％ , V 5.88％ ) after converting it into weight percent;

[0038] (4) Weigh each component by weight percentage, adopt vacuum smelting method to melt each component under the protection of inert gas ...

Embodiment 2

[0041] A method for designing high-entropy alloy components based on electronic alloy theory, the steps of which are:

[0042] (1) The target high-entropy alloy is CoFeNiMnV 0.5 , using the cluster method to calculate the average Md value of the target high-entropy alloy CoFeNiMnV0.25 and average Bo value

[0043] (2) Obtain the phase structure of the target high-entropy alloy according to the relationship between the average Md value and the average Bo value, specifically:

[0044] Therefore: The target high-entropy alloy should be FCC single phase in the as-cast state;

[0045] (3) Obtain the atomic percentage of each component according to the phase structure and expression of the target high-entropy alloy (specifically: Co 22.22％ , Fe 22.22％ 、Ni 22.22％ , Mn 22.22％ , V 11.11％ ) after converting it into weight percent;

[0046] (4) Weigh each component by weight percentage, adopt vacuum smelting method to melt each component under the protection of inert gas t...

Embodiment 3

[0049] A method for designing high-entropy alloy components based on electronic alloy theory, the steps of which are:

[0050] (1) The target high-entropy alloy is CoFeNiMnV0.75, and the average Md value of the target high-entropy alloy CoFeNiMnV0.25 is calculated by the cluster method and average Bo value

[0051] (2) Obtain the phase structure of the target high-entropy alloy according to the relationship between the average Md value and the average Bo value, specifically:

[0052] Therefore: The target high-entropy alloy should be FCC single phase in the as-cast state;

[0053] (3) Obtain the atomic percentage of each component according to the phase structure and expression of the target high-entropy alloy (specifically: Co 21.05％ , Fe 21.05％ 、Ni 21.05％ , Mn 21.05％ , V 15.79％ ) after converting it into weight percent;

[0054] (4) Weigh each component by weight percentage, adopt vacuum smelting method to melt each component under the protection of inert gas t...

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Abstract

The invention discloses a method for designing components of a high-entropy alloy based on an electronic alloy theory. The method comprises the following steps: firstly, calculating an average Md value and an average Bo value of a target high-entropy alloy; then obtaining the phase structure of the target high-entropy alloy according to the relationship between the average Md value and the averageBo value, obtaining the weight percentage of each component according to the phase structure and the expression of the target high-entropy alloy, and finally weighing each component according to theweight percentage for alloying smelting to obtain the target high-entropy alloy; obtaining the phase structure of the target high-entropy alloy according to the relationship between the average Md value and the average Bo value, specifically, determining the phase structure of the target high-entropy alloy according to the relationship between the average Md value and the average Bo value. According to the method, the phase structure of the high-entropy alloy is predicted on the basis of the electronic alloy theory for the first time, prediction is rapid and accurate, great waste of cost and time due to the fact that the phase structure of the alloy can be known only by analyzing the alloy after actual smelting in the prior art is avoided, and the method has great application prospects.

Description

technical field [0001] The invention belongs to the technical field of alloy composition design, and relates to a method for designing high-entropy alloy composition based on electronic alloy theory. Background technique [0002] In 2004, Prof. Ye Junwei and Professor Cantor broke through the design shackles of traditional alloys based on the thermodynamic parameters of mixing enthalpy, and proposed a new alloy design concept based on mixing entropy, which enriched the composition system of solid solution alloys and made the properties of the alloys better. Leaps of improvement. High-entropy alloys (High-entropy alloys), referred to as HEA, are alloys formed of five or more equal or approximately equal amounts of metals. The multi-principal characteristics of high-entropy alloys make the alloy system have many properties different from traditional alloys (strength, fracture resistance, tensile strength, corrosion resistance and oxidation resistance are better than tradition...

Claims

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Application Information

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IPC IPC(8): G06F30/20G06Q10/04
CPCG06F30/20G06Q10/04
Inventor 沙业雨李方杰常帅曾鹏柴培钊
Owner SHANGHAI UNIV OF ENG SCI
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