High-specific-strength Ti-Al-Nb-Zr-Ta refractory high-entropy alloy

A ti-al-nb-zr-ta, high-entropy alloy technology, applied in the field of high specific strength Ti-Al-Nb-Zr-Ta refractory high-entropy alloys, can solve poor room temperature plasticity, refractory high-entropy alloys Problems such as high density and high production cost can achieve the effect of improving alloy strength, excellent comprehensive performance of strength and plasticity, and low production cost

Active Publication Date: 2022-01-04
SHANGHAI JIAO TONG UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0008] The purpose of the present invention is to solve the problems of high density, poor room temperature plasticity and high production cost of traditional refractory high-entropy alloys, and provides a Ti-Al-Nb-Zr-Ta refractory high-entropy alloy

Method used

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  • High-specific-strength Ti-Al-Nb-Zr-Ta refractory high-entropy alloy

Examples

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Embodiment 1

[0044] A Ti-Al-Nd-Zr-Ta five-element refractory high-entropy alloy whose alloy expression is Ti 63.5 Al 12 Nb 12 Zr 12 Ta 0.5 , its theoretical density is 5.088g / cm 3 , as a more detailed example, its preparation method and related tests include the following steps:

[0045] (1) Ingredients: select titanium with a purity of 99.5wt%, aluminum with a purity of 99.9wt%, niobium with a purity of 99.9wt%, zirconium with a purity of 99.9wt% and tantalum with a purity of 99.9wt%, and proceed according to the alloy expression For ingredients, before weighing the raw materials, first remove the oxide film on the surface of the raw materials with a wire brush or a grinder, then put the raw materials into a beaker filled with absolute ethanol and ultrasonically clean them for 100 seconds, and then completely dry them with a hair dryer. An electronic balance with an accuracy of 0.001g was used to accurately weigh the mass of each component (the error requirement was within ±0.005g). ...

Embodiment 2

[0049] A kind of Ti-Al-Nd-Zr-Ta quinary high entropy alloy, its alloy expression is Ti 56.5 Al 14 Nb 14 Zr 15 Ta 0.5 , its theoretical density is 5.196g / cm3, as a more detailed example, its preparation method and related tests include the following steps:

[0050] (1) Ingredients: select titanium with a purity of 99.5wt%, aluminum with a purity of 99.9wt%, niobium with a purity of 99.9wt%, zirconium with a purity of 99.9wt% and tantalum with a purity of 99.9wt%, and proceed according to the alloy expression For ingredients, before weighing the raw materials, first remove the oxide film on the surface of the raw materials with a wire brush or a grinder, then put the raw materials into a beaker filled with absolute ethanol and ultrasonically clean them for 100 seconds, and then completely dry them with a hair dryer. An electronic balance with an accuracy of 0.001g was used to accurately weigh the mass of each component (the error requirement was within ±0.005g).

[0051] (2...

Embodiment 3

[0054] A kind of Ti-Al-Nd-Zr-Ta quinary high entropy alloy, its alloy expression is Ti 49.5 Al 15 Nb 10 Zr 25 Ta 0.5 , its theoretical density is 5.211g / cm3, as a more detailed example, its preparation method and related tests include the following steps:

[0055] (1) Ingredients: select titanium with a purity of 99.5wt%, aluminum with a purity of 99.9wt%, niobium with a purity of 99.9wt%, zirconium with a purity of 99.9wt% and tantalum with a purity of 99.9wt%, and proceed according to the alloy expression For ingredients, before weighing the raw materials, first remove the oxide film on the surface of the raw materials with a wire brush or a grinder, then put the raw materials into a beaker filled with absolute ethanol and ultrasonically clean them for 100 seconds, and then completely dry them with a hair dryer. An electronic balance with an accuracy of 0.001g was used to accurately weigh the mass of each component (the error requirement was within ±0.005g).

[0056] (2...

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Abstract

The invention discloses a Ti-Al-Nb-Zr-Ta refractory high-entropy alloy. The alloy expression of the Ti-Al-Nb-Zr-Ta refractory high-entropy alloy is TiaAlbNbcZrdTae, wherein, a, b, c, d and e respectively represent the atomic percent content of each corresponding component, and the following conditions are met: a is 35-68, b is 10-20, c is 10-20, d is 12-25, e is 0.1-1, and a + b + c + d + e = 100. The density is 5.01-5.45 g/cm3. The Ti-Al-Nb-Zr-Ta refractory high-entropy alloy has a series of advantages of high room temperature strength, good plasticity, corrosion resistance, certain high temperature performance and the like, the preparation process is simple, and the production cost is low.

Description

technical field [0001] The invention belongs to the technical field of new metal materials, and in particular relates to a Ti-Al-Nb-Zr-Ta refractory high-entropy alloy with high specific strength. Background technique [0002] High-entropy alloys are emerging materials that have attracted attention in recent years. Traditional alloys usually consist of 1 or 2 major elements and small amounts of other elements, such as steel, aluminum alloys, titanium alloys, magnesium alloys, nickel superalloys, etc. Due to design limitations, traditional alloys are gradually approaching the bottleneck of development, and there are few breakthroughs to meet the increasingly stringent actual needs. In recent years, a brand-new alloy design method has emerged, that is, by mixing four or more principal elements to maximize the mixing entropy to obtain a single-phase solid solution alloy, this alloy is called a high-entropy alloy. It has high entropy effect, hysteretic diffusion effect, lattic...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C30/00C22C1/02C22B9/20C22C14/00
CPCC22C30/00C22C1/02C22B9/20C22C14/00
Inventor 李金富张永刚
Owner SHANGHAI JIAO TONG UNIV
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