Metal foam/high entropy metal glass composite material with large compressive strain and preparation method thereof

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, complicated process, and high energy consumption, and achieve the effects of increasing room temperature compressive strain, simple preparation process, and uniform composition

Inactive Publication Date: 2020-07-21
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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  • Metal foam/high entropy metal glass composite material with large compressive strain and preparation method thereof
  • Metal foam/high entropy metal glass composite material with large compressive strain and preparation method thereof
  • Metal foam/high entropy metal glass composite material with large compressive strain and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] The first step is to prepare a high-entropy metallic glass test rod

[0036] Press Ti 20 Zr 20 f 20 Cu 20 PD 20 Components (wherein, the subscript numbers are the atomic percentages of the corresponding metal elements in the alloy, the following examples are the same), respectively weigh 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 arcing current was set to 50A, and the sample was formally smelted at a current of 60A, each time the molten state was kept for 30s, and the smelting was repeated 3 times to ensure the uniformity of the composition of the alloy ingot. Finally, use the manipulator in the furnace to clamp the alloy ingot to the smelting and suction casting station, increase the current to 100A, and suck the molten metal into the copper mold under the suction casting pressure of 0.1MPa to obtain a Ti alloy with a diameter of 1mm. 20 Zr 20 f...

Embodiment 2

[0041] The first step, smelting and suction casting to prepare high-entropy metallic glass test rods

[0042] Press Ti 20 Zr 20 f 20 Cu 20 PD 20 Components, 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 arcing current was set to 50A, and the sample was formally smelted at a current of 70A, each time the molten state was kept for 35s, and the smelting was repeated 3 times to ensure the uniformity of the composition of the alloy ingot. Finally, use the manipulator in the furnace to clamp the alloy ingot to the smelting and suction casting station, increase the current to 110A, and suck the molten metal into the copper mold under the suction casting pressure of 0.15MPa to obtain a Ti alloy with a diameter of 1.5mm. 20 Zr 20 f 20 Cu 20 PD 20 High-entropy metallic glass test rod;

[0043] The second step, dealloyi...

Embodiment 3

[0048] The first step, smelting and suction casting to prepare high-entropy metallic glass test rods

[0049] Press Ti 20 Zr 20 f 20 Cu 20 PD 20 Components, 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 arcing current was set to 50A, and the sample was formally smelted at a current of 80A, each time the molten state was kept for 40s, and the smelting was repeated 3 times to ensure the uniformity of the composition of the alloy ingot. Finally, use the manipulator in the furnace to clamp the alloy ingot to the smelting and suction casting station, increase the current to 120A, and suck the molten metal into the copper mold under the suction casting pressure of 0.2MPa to obtain a Ti alloy with a diameter of 1.5mm. 20 Zr 20 f 20 Cu 20 PD 20 High-entropy metallic glass test rod;

[0050] The second step, dealloyin...

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Abstract

The invention relates to a metal foam / high-entropy metal glass composite material with large compressive strain and a preparation method thereof. The composite material uses a high-entropy metallic glass test rod as an internal matrix, and the surface of the matrix is ​​wrapped with a foam layer; the atomic ratio composition of the internal matrix is ​​Ti 20 Zr 20 f 20 Cu 20 PD 20 ; The atomic ratio composition of the foam layer is Ti x Zr y f z Cu w PD η , the foam layer is formed by stacking particles with a particle size of 0.35-0.6 μm; in the preparation method, a low-concentration mixed acid is used to realize the two functions of dealloying and anti-oxidation at the same time. In addition, the dealloying process Combined with the heat treatment process, the residual stress of the material is effectively removed and the problem of delamination is avoided. The invention overcomes the disadvantages of uneven structure and composition of current materials, high energy consumption and low output.

Description

technical field [0001] The invention relates to the field of preparation of high-entropy metallic glass materials, in particular to a metal foam / 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 makes this type of material have 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 an equiatomic ratio or close to an equiatomic ratio. Recent studies have shown that there is a crossover in material design between metallic glasses and high-entropy alloys, that is, some alloys with high-entropy com...

Claims

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Application Information

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Patent Type & Authority Patents(China)
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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