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Lightweight high-entropy alloy with high strength and high plasticity and preparation method thereof

A technology of high-entropy alloy and high plasticity, which is applied in the field of light-weight high-entropy alloy and its preparation, can solve the problems of low density, high hardness, limited application, severe plastic sacrifice, etc., and achieve easy acquisition, simple operation and huge application potential Effect

Active Publication Date: 2019-03-01
北京中辰至刚科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although lower density, high hardness and high compressive strength can be obtained, the plastic sacrifice is serious, which greatly limits its application in engineering

Method used

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  • Lightweight high-entropy alloy with high strength and high plasticity and preparation method thereof
  • Lightweight high-entropy alloy with high strength and high plasticity and preparation method thereof
  • Lightweight high-entropy alloy with high strength and high plasticity and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0034] Lightweight Ti with high strength and high plasticity 60 Zr 20 V 3 Nb 17 The preparation steps of high entropy alloy are as follows:

[0035] Step 1: Use elemental Ti, Zr, V and Nb with a purity of not less than 99.7wt% as raw materials, first use a grinding wheel to remove the scale on the surface of the raw materials, and then use absolute ethanol for ultrasonic vibration cleaning, and according to the atomic percentage Ti :Zr:V:Nb=60:20:3:17 Weigh out clean raw materials with a total mass of (70±0.01)g;

[0036] Step 2: Put the weighed raw materials into the water-cooled copper crucible of the high-vacuum non-consumable arc melting furnace in order of melting point from low to high, and then vacuumize until the vacuum degree in the melting furnace reaches 2.5×10 -3 After Pa, fill in argon as a protective gas; before melting the alloy, first melt the pure titanium metal ingot to further reduce the oxygen content in the furnace cavity of the melting furnace, and th...

Embodiment 2

[0040] Lightweight Ti with high strength and high plasticity 30 Zr 27 V 18 Nb 25 The preparation steps of high entropy alloy are as follows:

[0041] Step 1: Use elemental Ti, Zr, V and Nb with a purity of not less than 99.7wt% as raw materials, first use a grinding wheel to remove the scale on the surface of the raw materials, and then use absolute ethanol for ultrasonic vibration cleaning, and according to the atomic percentage Ti :Zr:V:Nb=30:27:18:25 Weigh out clean raw materials with a total mass of (70±0.01)g;

[0042] Step 2: Put the weighed raw materials into the water-cooled copper crucible of the high-vacuum non-consumable arc melting furnace in order of melting point from low to high, and then vacuumize until the vacuum degree in the melting furnace reaches 2.5×10 -3 After Pa, fill in argon as a protective gas; before melting the alloy, melt the pure titanium metal ingot to further reduce the oxygen content in the furnace cavity of the melting furnace, and then c...

Embodiment 3

[0046] Lightweight Ti with high strength and high plasticity 50 Zr 18 V 12 Nb 16 Al 4 The preparation steps of high entropy alloy are as follows:

[0047] Step 1: Use elemental Ti, Zr, V, Nb and Al with a purity of not less than 99.7wt% as raw materials, first use a grinding wheel to remove the scale on the surface of the raw materials, and then use absolute ethanol for ultrasonic vibration cleaning, and according to the atomic Percentage Ti:Zr:V:Nb:Al=50:18:12:16:4 Weigh out the clean raw material whose total mass is (70±0.01)g;

[0048] Step 2: Put the weighed raw materials into the water-cooled copper crucible of the high-vacuum non-consumable arc melting furnace in order of melting point from low to high, and then vacuumize until the vacuum degree in the melting furnace reaches 2.5×10 -3 After Pa, fill in argon as a protective gas; before melting the alloy, melt the pure titanium metal ingot to further reduce the oxygen content in the furnace cavity of the melting fur...

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Abstract

The invention relates to a lightweight high-entropy alloy with high strength and high plasticity and a preparation method thereof, and belongs to the field of metal materials and preparation thereof.The high-entropy alloy is mainly composed of Ti, Zr, V, Nb and M, the M is one or more of Al, Hf, Cr, Fe, Mg, Be, Li, Mo, Co, Ni, Si, B, O and N, the method mainly regulates the content of each element to make the alloy have low density, high strength and high plasticity, and the alloy has great application potential in the engineering field; the high-entropy alloy preparation method is simple tooperate, and raw materials used are non-toxic, harmless, safe, reliable, economical and practical.

Description

technical field [0001] The invention relates to a light high-entropy alloy with high strength and high plasticity and a preparation method thereof, belonging to the field of metal materials and its preparation. Background technique [0002] High-entropy alloys are alloys composed of five or more components in approximately equiatomic ratios, also known as multi-principal high-disorder alloys. Due to the multi-principal effect (high entropy effect, lattice distortion effect, hysteresis diffusion effect and cocktail effect), high entropy alloys exhibit a metallurgical physical mechanism different from traditional alloys, and thus exhibit a series of excellent properties, such as outstanding Excellent high temperature strength, good low temperature plasticity, good wear resistance, good corrosion resistance and excellent radiation resistance. With the progress of research, the scope of high-entropy alloys has been expanded, the components are no longer limited to five or more,...

Claims

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Application Information

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IPC IPC(8): C22C30/00C22C1/02C22F1/00
CPCC22C1/02C22C30/00C22F1/00C22C14/00C22C16/00C22F1/183C22F1/186
Inventor 薛云飞陈松屾王亮曹堂清王本鹏王富耻王鲁
Owner 北京中辰至刚科技有限公司
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