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Foam metal/high-entropy metal glass composite material with large compression strain and preparing method of foam metal/high-entropy metal glass composite material

A technology of metallic glass and composite materials, which is applied in the field of high-entropy metallic glass material preparation, can solve the problems of high cost, complex process, and large burden of waste liquid treatment, and achieve high room temperature compressive strain, simple preparation process, and good integrity Effect

Inactive Publication Date: 2019-02-12
HEBEI UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The invention solves the complex process and high cost in the prior art, the advanced equipment, the precise control of the process, the high requirements for the technical level of the operators, the heavy burden on waste liquid treatment, and the potential impact on the environment and workers' health. Threat, the structure and composition of the prepared material are not uniform, the disadvantages of high energy consumption and low output

Method used

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  • Foam metal/high-entropy metal glass composite material with large compression strain and preparing method of foam metal/high-entropy metal glass composite material
  • Foam metal/high-entropy metal glass composite material with large compression strain and preparing method of foam metal/high-entropy metal glass composite material
  • Foam metal/high-entropy metal glass composite material with large compression strain and preparing method of foam metal/high-entropy metal glass composite material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] The first step is to prepare high-entropy metal glass test rods

[0036] Press Ti 20 Zr 20 Hf 20 Cu 20 Pd 20 Composition (wherein, the subscript numbers are the atomic percentages of the corresponding metal elements in the alloy, the same in the following examples), respectively weigh the corresponding mass of high purity (mass fraction greater than 99.9wt.%) Ti, Zr, Hf, Cu and Pd metals. Before smelting, control the vacuum degree in the furnace to 3.5×10 -3 MPa. The starting current is set to 50A, and then the sample is officially smelted at a current of 60A. Each time the sample is kept in the molten state for 30s, and the smelting is repeated 3 times to ensure the uniformity of the alloy ingot composition. Finally, use the manipulator in the furnace to clamp the alloy ingot to the melting and suction casting station, increase the current to 100A, and suck the molten metal into the copper mold under the suction and casting pressure of 0.1MPa to obtain Ti with a diameter...

Embodiment 2

[0041] The first step is to prepare high-entropy metallic glass test rods by melting and casting

[0042] Press Ti 20 Zr 20 Hf 20 Cu 20 Pd 20 For the components, weigh the high-purity (mass fraction greater than 99.9wt.%) Ti, Zr, Hf, Cu and Pd metals of corresponding quality. Before smelting, control the vacuum degree in the furnace to 3.5×10 -3 MPa. The starting current is set to 50A, and then the sample is officially smelted at a current of 70A. Each time the sample is kept in the molten state for 35s, and the smelting is repeated 3 times to ensure the uniformity of the alloy ingot composition. Finally, use the manipulator in the furnace to clamp the alloy ingot to the melting and suction casting station, increase the current to 110A, and suck the molten metal into the copper mold under the suction and casting pressure of 0.15 MPa to obtain Ti with a diameter of 1.5 mm 20 Zr 20 Hf 20 Cu 20 Pd 20 High-entropy metal glass test rod;

[0043] The second step is to prepare metal foam...

Embodiment 3

[0048] The first step is to prepare high-entropy metallic glass test rods by melting and casting

[0049] Press Ti 20 Zr 20 Hf 20 Cu 20 Pd 20 For the components, weigh the high-purity (mass fraction greater than 99.9wt.%) Ti, Zr, Hf, Cu and Pd metals of corresponding quality. Before smelting, control the vacuum degree in the furnace to 3.5×10 -3 MPa. The starting current is set to 50A, and then the sample is officially smelted at a current of 80A. Each time the sample is kept in the molten state for 40s, and the smelting is repeated 3 times to ensure the uniformity of the alloy ingot composition. Finally, use the manipulator in the furnace to clamp the alloy ingot to the melting and suction casting station, increase the current to 120A, and suck the molten metal into the copper mold under the suction and casting pressure of 0.2MPa to obtain Ti with a diameter of 1.5mm 20 Zr 20 Hf 20 Cu 20 Pd 20 High-entropy metal glass test rod;

[0050] The second step is to prepare metal foam / hi...

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Abstract

The invention discloses a foam metal / high-entropy metal glass composite material with large compression strain and a preparing method of the foam metal / high-entropy metal glass composite material. According to the composite material, a high-entropy metal glass test bar serves as an inner base body, and the surface of the base body is wrapped by a foam layer; according to the atomic ratio, the component of the inner base body is Ti20Zr20Hf20Cu20Pd20; and according to the atomic ratio, the component of the foam layer is Ti<x>Zr<y>Hf<z>Cu<w>Pd<eta>, and the foam layer is formed by stacking particles with the grain size being 0.35-0.6 micron. In the preparing method, low-concentration mixed acid is adopted, and meanwhile the two functions of dealloying and oxidization preventing are achieved;and in addition, the dealloying process and the heat treatment process are combined, residual stress of materials is effectively removed, and the layering problem is solved. The foam metal / high-entropy metal glass composite material with large compression strain and the preparing method of the foam metal / high-entropy metal glass composite material overcome the defects that current material structures and components are not uniform, energy consumption is high, and the yield is low.

Description

Technical field [0001] The invention relates to the field of preparation of high-entropy metallic glass materials, in particular to a foamed metal / high-entropy metallic glass composite material with large compressive strain and a preparation method thereof. Background technique [0002] Metallic glass, also known as amorphous alloy, is a metal alloy with an amorphous atomic structure. Its internal atoms are characterized by long-range disorder and short-range order, which make this type of material possess some excellent mechanical properties, such as: High strength, high hardness, high strength limit, high fatigue resistance, etc. As a new type of alloy, high-entropy alloy is defined as an alloy with a solid solution structure composed of at least four elements in equal atomic ratio or close to equal atomic ratio. Recent studies have shown that there is a material design crossover between metallic glass and high-entropy alloys, that is, some high-entropy alloys can form metalli...

Claims

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Application Information

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IPC IPC(8): C22C1/08C22C3/00C22C30/02C22C45/00C22F1/16
CPCC22C1/08C22C3/005C22C30/02C22C45/00C22F1/16C22C1/11
Inventor 赵维民杨联赞李永艳王志峰秦春玲
Owner HEBEI UNIV OF TECH
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