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Oxygen-doped toughened aluminum-based amorphous composite material and preparation method thereof

An amorphous composite material and oxygen doping technology, applied in the field of amorphous alloys, can solve the problems of lack of simple process and complex process of aluminum-based amorphous composite materials, avoid adverse effects, achieve mechanical properties, and improve plasticity. Effect

Pending Publication Date: 2020-11-20
HUAZHONG UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] CN105154702B discloses an aluminum-based amorphous / high-entropy alloy composite material and its preparation method. First, aluminum-based amorphous alloy powder is obtained by mechanical alloying, then high-entropy alloy powder is obtained by gas atomization, and finally obtained by spark plasma sintering. The aluminum-based amorphous / high-entropy alloy composite material has a certain deformation ability, but its process is complicated
[0006] In summary, the existing technology still lacks a simple process for aluminum-based amorphous composites that can solve plastic problems

Method used

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  • Oxygen-doped toughened aluminum-based amorphous composite material and preparation method thereof
  • Oxygen-doped toughened aluminum-based amorphous composite material and preparation method thereof

Examples

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Effect test

Embodiment 1

[0028] Prepare Al-Ni-Y amorphous composite material, the preparation process includes the following steps:

[0029] (1) Weigh 30g of Al, Ni, and Y pure metal raw materials with a purity greater than 99.99% according to the ratio of atomic ratio Al:Ni:Y of 80.0%:15.0%:5.0%, mix them, and heat and melt them in a melting furnace ;

[0030] (2) Continue heating and control the temperature in the furnace to a constant temperature of 1050°C, blow oxygen into the alloy melt, use a temperature measuring oxygen meter to measure the dissolved oxygen content in real time, and stop heating when the atomic percentage of oxygen reaches 0.7%.

[0031] (3) Rapidly transfer the alloy melt into a copper mold and water-cool to prepare a rod-shaped material with a diameter of 1 mm.

Embodiment 2

[0033] Prepare Al-Ni-Y amorphous composite material, the preparation process includes the following steps:

[0034] (1) Weigh 30g of Al, Ni, and Y pure metal raw materials with a purity greater than 99.99% according to the ratio of atomic ratio Al:Ni:Y of 80.0%:15.0%:5.0%, mix them, and heat and melt them in a melting furnace ;

[0035] (2) Continue heating and control the temperature in the furnace to a constant temperature of 1050°C, blow oxygen into the alloy melt, measure the dissolved oxygen content in real time with a temperature measuring oxygen meter, and stop heating when the atomic percentage of oxygen reaches 0.4%.

[0036] (3) Rapidly transfer the alloy melt into a copper mold and water-cool to prepare a rod-shaped material with a diameter of 1 mm.

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Abstract

The invention belongs to the field of amorphous alloys, and discloses an oxygen-doped toughened aluminum-based amorphous composite material and a preparation method thereof. The preparation method comprises the following steps that S1, metal raw materials are mixed according to a designed proportion, and the mixture is heated and melted to obtain an alloy melt; S2, the alloy melt is subjected to heat preservation, meanwhile, oxygen is blown into the alloy melt, the percentage of oxygen atoms in the melt is controlled to reach a preset value, and the preset value ranges from 0.01% to 1.0%; andS3, the alloy melt is cooled, and preparation of the composite material is completed. The oxygen-doped toughened aluminum-based amorphous composite material prepared by the preparation method has dispersed oxides, and the free volume of metal atoms in an amorphous substrate around the oxygen-doped toughened aluminum-based amorphous composite material is increased, so that the composite material isbeneficial to formation of a local shear region in a deformation process, shear transformation localization is relieved, and the plasticity of the material is improved under the condition that the strength is not obviously reduced.

Description

technical field [0001] The invention belongs to the field of amorphous alloys, and in particular relates to an oxygen-doped toughened aluminum-based amorphous composite material and a preparation method thereof. Background technique [0002] Due to its unique long-range disordered and short-range ordered structure, amorphous alloys have excellent properties such as high strength, high hardness, high elasticity, corrosion resistance, and wear resistance, and have broad application prospects in aerospace, biomedicine, and precision machinery. . Among many amorphous alloy systems, aluminum-based amorphous alloys also have the advantages of low density and high specific strength, so they have attracted great attention from researchers. However, aluminum-based amorphous alloys face a common problem of amorphous alloys, that is, poor plasticity during deformation at room temperature and strong brittleness, which greatly restricts its application. Therefore, it is necessary to de...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C45/08C22C1/02C22C1/10
CPCC22C45/08C22C1/1036C22C1/1052C22C1/11
Inventor 王新云张嘉城张茂黄婷邓磊金俊松龚攀
Owner HUAZHONG UNIV OF SCI & TECH
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