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Multi-major-element high-entropy alloy and preparation method thereof

A high-entropy alloy, multi-principal technology, applied in the field of composite material manufacturing, can solve the problems of lack of applicability, brittle material, difficult to analyze, etc., to improve mold release quality, high alloy hardness and strength, and excellent corrosion resistance. Effect

Inactive Publication Date: 2016-09-21
WUHU SANDAO MATERIAL TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Equimolar multi-principal element alloys are neither traditional solid solution alloys nor compound alloys. The experience of traditional alloys can easily lead people to mistakenly believe that multiple principal element alloys will produce a variety of intermetallic compounds, which are not only difficult to analyze but also brittle. Lack of applicability

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] A multi-principal element high-entropy alloy and its preparation method, wherein the main constituent elements V, Zr, Hf, Ti, Cr, Zr, and Mn are configured in equimolar ratios, and the preparation includes raw material preparation, pretreatment, powder mixing, and preliminary molding , high temperature sintering molding, heat treatment and other process steps, the specific preparation steps are as follows:

[0018] (1) Raw material preparation: According to the performance requirements of the VZrHfTiCrZrMn alloy material, the molar ratio of each component is designed, converted into a mass ratio, and an appropriate amount of each component material is weighed, and the purity of each element is greater than 99.8%;

[0019] (2) Pre-treatment: According to the physical properties of each component, dry the above powder in a clean oven at 50 degrees Celsius for 5 hours, and at the same time, make the material into powder by grinding and ball milling methods and then sieve, t...

Embodiment 2

[0025] A multi-principal element high-entropy alloy and its preparation method, wherein the main constituent elements V, Zr, Hf, Ti, Cr, Zr, and Mn are configured according to a nearly equimolar ratio of 1:1:1:1:1:0.9:0.8 The preparation includes raw material preparation, pretreatment, powder mixing, preliminary molding, high temperature sintering molding, heat treatment and other process steps. The specific preparation steps are as follows:

[0026] (1) Raw material preparation: According to the performance requirements of the VZrHfTiCrZrMn alloy material, the molar ratio of each component is designed, converted into a mass ratio, and an appropriate amount of each component material is weighed, and the purity of each element is greater than 99.8%;

[0027] (2) Pretreatment: According to the physical properties of each component, the above powders were dried in a clean oven at 80 degrees Celsius for 5 hours, and at the same time, the materials were made into powder by grinding ...

Embodiment 3

[0033] A multi-principal element high-entropy alloy and its preparation method, wherein the main constituent elements V, Zr, Hf, Ti, Cr, Zr, and Mn are configured according to a nearly equimolar ratio of 1:1:1:1:1:1.2:1.1 The preparation includes raw material preparation, pretreatment, powder mixing, preliminary molding, high temperature sintering molding, heat treatment and other process steps. The specific preparation steps are as follows:

[0034] (1) Raw material preparation: According to the performance requirements of the VZrHfTiCrZrMn alloy material, the molar ratio of each component is designed, converted into a mass ratio, and an appropriate amount of each component material is weighed, and the purity of each element is greater than 99.8%;

[0035] (2) Pre-treatment: According to the physical properties of each component, dry the above powder in a clean oven at 90 degrees Celsius for 5 hours, and at the same time make the material into powder by grinding and ball milli...

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Abstract

The invention discloses multi-major-element high-entropy alloy and a preparation method thereof and belongs to the technical field of alloy materials. Through the excellent comprehensive performance of the high-entropy alloy, the problem that existing metal is poor in strength, hardness, compactness, corrosion resistance and the like is mainly solved. Elements such as V, Zr, Hf, Ti, Cr, Zr and Mn are configured according to the equal molar ratio or the approximate equal molar ratio, and VZrHfTiCrZrMn alloy is obtained through vacuum sintering. The alloy has the characteristics of being high in strength and hardness and excellent in comprehensive performance, and the alloy can be used for special alloy, die manufacturing, special tools and the like. According to the multi-major-element high-entropy alloy and the preparation method thereof, the thought is clear, operation is easy, the practicability is high, and the obtained alloy product has certain market prospects.

Description

technical field [0001] The invention belongs to the technical field of composite material manufacturing, and in particular relates to a multi-principal element high-entropy alloy and a preparation method thereof. Background technique [0002] The main constituent elements of high-entropy alloys are at least 5 kinds, among which there are always some elements, such as aluminum, which will cause the alloy to produce dense oxides, and high-entropy alloys usually have the characteristics of nanocrystalline, amorphous, single-phase, and low free enthalpy , so the corrosion resistance of high-entropy alloys is better than that of traditional alloys. For example, after the FeNiTiAlCoCrCu series high-entropy alloy coating is coated on the surface of the steel material, the corrosion resistance performance is significantly improved. Traditional alloys are close to maturity and saturation, and it is difficult for traditional alloy concepts to create new alloy systems or to create new...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C30/00C22C1/04C22F1/18
CPCC22C1/0458C22C16/00C22C30/00C22F1/002C22F1/18B22F2998/10B22F1/10B22F2003/248B22F3/1007B22F3/02
Inventor 王眈眈
Owner WUHU SANDAO MATERIAL TECH CO LTD
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