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A high-entropy alloy with neutron poison properties and its preparation method

A technology of high-entropy alloys and poisons, applied in the field of high-entropy alloys with neutron poison characteristics and its preparation, can solve problems such as high cost, poor room temperature plasticity, and insufficient attention to high-entropy alloy research

Active Publication Date: 2021-09-14
NORTHEASTERN UNIV LIAONING +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] For the current typical BCC structure refractory high-entropy alloys such as TaNbMoW, TaNbMoWV, etc. contain a large number of high-density metal elements, the alloy has high density, high cost, poor room temperature plasticity, and is difficult to be used as a bottleneck problem for structural materials. The research on high-entropy alloys with toxic characteristics has not been given sufficient attention. The present invention proposes a high-entropy alloy based on the Al-Nb-Zr-Mo-Hf-B system, and fully considers the special effect of the B element, thereby realizing the high-entropy alloy The structural and functional integration of

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] Al-Nb-Zr-Mo-Hf-B system alloy high entropy characteristics of neutron poison, in particular alloy composition is:. 5 at% Al, 40% Zr, 30% Nb, 15% Mo, 9.8% Hf, 0.2% B, the balance being unavoidable impurity elements.

[0025] Al-Nb-Zr-Mo-Hf-B alloys preparing high entropy system according to the present embodiment is:

[0026] (1) Preparation of raw materials: According to Al-Nb-Zr-Mo-Hf-B system alloy high entropy ratio weighed desired alloy material;

[0027] (2) arc melting: protection under protective gas, the Al, Zr, Nb, Mo, Zr-Hf alloy intermediate, B rapid heating and melting powder; in order to obtain a uniform composition of the alloy ingot melting is repeated five times all the samples, after each pass a sample was melted inverted; avoid melting time, the melting current difference causes the influence on the sample microstructure and properties of generated each sample at each pass until all the alloying elements are melted completely melted into the liquid state, ...

Embodiment 2

[0030] Al-Nb-Zr-Mo-Hf-B system alloy high entropy characteristics of neutron poison, in particular alloy composition is:. 14at% Al, 60% Zr, 20% Nb, 4.99% Mo, 1% Hf, 0.01 % B, the balance being unavoidable impurity elements.

[0031] Al-Nb-Zr-Mo-Hf-B alloys preparing high entropy system according to the present embodiment is:

[0032] (1) Preparation of raw materials: According to Al-Nb-Zr-Mo-Hf-B system alloy high entropy weighed ratio desired alloy materials;

[0033] (2) arc melting: protection under protective gas, the Al, Zr, Nb, Mo, Zr-Hf alloy intermediate, B rapid heating and melting powder; in order to obtain a uniform composition of the alloy ingot melting is repeated five times all the samples, after each pass a sample was melted inverted; avoid melting time, the melting current difference causes the influence on the sample microstructure and properties of generated each sample at each pass until all the alloying elements are melted completely melted into the liquid stat...

Embodiment 3

[0036] Al-Nb-Zr-Mo-Hf-B system alloy high entropy characteristics of neutron poison, in particular alloy composition is:. 11at% Al, 22% Zr, 40% Nb, 5% Mo, 20% Hf, 2 % B, the balance being unavoidable impurity elements.

[0037] Al-Nb-Zr-Mo-Hf-B alloys preparing high entropy system according to the present embodiment is:

[0038] (1) Preparation of raw materials: According to Al-Nb-Zr-Mo-Hf-B system alloy high entropy weighed ratio desired alloy materials;

[0039] (2) arc melting: protection under protective gas, the Al, Zr, Nb, Mo, Zr-Hf alloy intermediate, B rapid heating and melting powder; in order to obtain a uniform composition of the alloy ingot melting is repeated five times all the samples, after each pass a sample was melted inverted; avoid melting time, the melting current difference causes the influence on the sample microstructure and properties of generated each sample at each pass until all the alloying elements are melted completely melted into the liquid state, di...

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Abstract

The invention discloses an Al-Nb-Zr-Mo-Hf-B system high-entropy alloy with neutron poison properties, which belongs to the field of high-entropy alloy materials, and its components are: aluminum: 5-15%; niobium: 20-30%; zirconium: 37-60%; molybdenum: 4.99-15%; hafnium: 1-20%, the balance is boron and unavoidable impurities; for the current typical BCC structure refractory high-entropy alloys such as TaNbMoW, TaNbMoWV contains a large amount of high-density metal elements, the alloy has high density, high cost, poor room temperature plasticity, and is difficult to be used as a bottleneck problem for structural materials. At the same time, other researches have not paid enough attention to the research of high-entropy alloys with neutron poison properties. The present invention proposes a high-entropy alloy based on the Al-Nb-Zr-Mo-Hf-B system, and fully considers the special effect of the B element, thereby realizing the structural and functional integration of the high-entropy alloy.

Description

Technical field [0001] The present invention is in the field of high entropy alloy materials, and more particularly to a high entropy characteristics of an alloy and neutron poison preparation. Background technique [0002] High-entropy alloy is a new alloy design ideas, simple phase composition and excellent performance of the high entropy alloy has great potential for development. At present, high entropy alloy are concentrated in the single phase FCC high entropy alloy system FeCoNiCrMn classic system and derived in the atomic ratio of transition group element or the like or the like near atomic ratio thereof. However, many studies show that FCC system alloy having a high entropy low yield strength characteristics, and phase separation after long time aging occurs in the temperature, and therefore its poor structural stability. On the other hand, a BCC structure typical of refractory alloys such as high entropy TaNbMoW, TaNbMoWV the like containing a large amount of high-densi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C16/00C22C30/00C22C1/03G21F1/08
CPCC22C1/03C22C16/00C22C30/00G21F1/085
Inventor 潘虎成滕常青吴璐邓志勇张伟毛建军覃检涛伍晓勇
Owner NORTHEASTERN UNIV LIAONING
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