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Zirconium-based amorphous alloy and preparation method thereof

A technology of zirconium-based amorphous alloys and components, which is applied in the field of amorphous alloy preparation, can solve the problems of poor plasticity of zirconium-based amorphous alloys, and achieve high compressive strength, good application prospects, and simple operation processes

Inactive Publication Date: 2013-02-06
SHANGHAI JIAO TONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to overcome the disadvantage of poor plasticity of zirconium-based amorphous alloys at present, and to prepare a zirconium-based amorphous alloy with excellent plastic deformation ability by introducing icosahedral short-range or medium-range order into the amorphous phase

Method used

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  • Zirconium-based amorphous alloy and preparation method thereof
  • Zirconium-based amorphous alloy and preparation method thereof
  • Zirconium-based amorphous alloy and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] Preparation of Zr 69 Cu 12.5 Ni 10 Al 7.5 Ag 1 bulk amorphous alloy

[0038] (1) Ingredients: Accurately weigh Zr, Cu, Ni, Al, Ag elemental substances with a purity of not less than 99.9wt% according to the stoichiometric ratio, and mix them evenly.

[0039] (2) Oxygen consumption: in a vacuum of 2×10 -3 Argon with a purity of 99.999% is introduced into the Pa vacuum melting furnace, and then pure titanium is used to consume oxygen in the vacuum melting furnace to remove all the oxygen in the argon atmosphere;

[0040] (3) Melting: Put the mixture obtained in step (1) in the water-cooled copper crucible of the vacuum arc melting furnace described in step (2), and smelt it under the protection of the high-purity argon atmosphere obtained in step (2). The current is 200A, and the time for each smelting is 1min. After the alloy is cooled and solidified, the ingot is turned over with a manipulator, and then the next smelting is carried out, and the smelting is repeate...

Embodiment 2

[0047] Preparation of Zr 68 Cu 12.5 Ni 10 Al 7.5 Ag 2 bulk amorphous alloy

[0048] (1) Ingredients: Accurately weigh Zr, Cu, Ni, Al, Ag elemental substances with a purity of not less than 99.9wt% according to the stoichiometric ratio, and mix them evenly.

[0049] (2) Oxygen consumption: in a vacuum of 2.5×10 -3 Argon with a purity of 99.999% is introduced into the Pa vacuum melting furnace, and then pure titanium is used to consume oxygen in the vacuum melting furnace to remove all the oxygen in the argon atmosphere;

[0050] (3) Melting: Put the mixture obtained in step (1) in the water-cooled copper crucible of the vacuum arc melting furnace described in step (2), and smelt it under the protection of the high-purity argon atmosphere obtained in step (2). The current is 200A, and the time for each smelting is 1min. After the alloy is cooled and solidified, the ingot is turned over with a manipulator, and then the next smelting is carried out, and the smelting is repea...

Embodiment 3

[0053] Preparation of Zr 67 Cu 12.5 Ni 10 Al 7.5 Ag 3 bulk amorphous alloy

[0054] (1) Ingredients: Accurately weigh Zr, Cu, Ni, Al, Ag elemental substances with a purity of not less than 99.9wt% according to the stoichiometric ratio, and mix them evenly.

[0055] (2) Oxygen consumption: in a vacuum of 2×10 -3 Argon with a purity of 99.999% is introduced into the Pa vacuum melting furnace, and then pure titanium is used to consume oxygen in the vacuum melting furnace to remove all the oxygen in the argon atmosphere;

[0056] (3) Melting: Put the mixture obtained in step (1) in the water-cooled copper crucible of the vacuum arc melting furnace described in step (2), and smelt it under the protection of the high-purity argon atmosphere obtained in step (2). The current is 250A, and the time for each smelting is 1min. After the alloy is cooled and solidified, the ingot is turned over with a manipulator, and then the next smelting is carried out, and the smelting is repeate...

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Abstract

The invention relates to a zirconium-based amorphous alloy. The zirconium-based amorphous alloy comprises zirconium, copper, nickel, aluminum and sliver; and the zirconium-based amorphous alloy is shown by the following formula: Zr70-xCu12.5Ni10Al7.5Agx, wherein x is more than or equal to 1 and less than or equal to 10. The preparation method comprises the steps of replacing zirconium element by a silver part, and melting by arc under vacuum, and then carrying out suction casting, so as to obtain the zirconium-based amorphous alloy. The zirconium-based amorphous alloy is excellent in plastic deformation capacity and high in strength; the amorphous alloy is high in glass transition temperature and initial crystallizing temperature, and wide in sub-cooled liquid phase area, and has a potential application prospect.

Description

technical field [0001] The invention relates to a zirconium-based amorphous alloy and a preparation method thereof, belonging to the field of preparation of amorphous alloys. Background technique [0002] Alloy melts tend to spontaneously crystallize during cooling and solidification. But when the cooling rate is large enough, the alloy will pass through the crystallization process and form an amorphous alloy. Amorphous alloy is a metastable state. The atoms are arranged topologically disordered in three-dimensional space, without long-range periodic translational symmetry, and there are no defects such as grain boundaries, dislocations, and segregation in the structure. It is precisely because of this special microstructure that amorphous alloys exhibit extremely high strength and hardness, high elastic limit, excellent wear resistance and corrosion resistance, and at the same time exhibit excellent soft and hard magnetism and superconductivity characteristic. At present...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C45/10C22C1/02
Inventor 周巍李金富
Owner SHANGHAI JIAO TONG UNIV
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