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Method for refining aluminum alloy by using metallic glass

A technology of metallic glass and aluminum alloy, which is applied in the field of aluminum alloy processing, can solve the problems of insignificant structure refinement effect of Al-Si alloy, extremely high purity requirement of aluminum alloy, and narrow application range of alloy system, etc., and achieves huge industrial application Potential and value, optimization of aluminum alloy structure and mechanical properties, and low cost effect

Inactive Publication Date: 2017-09-01
JILIN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, the inoculants of mainstream aluminum alloys such as: Al-Ti-B, Al-Ti-C, Al-Ti-C-B and other inoculants all contain Ti element, and are suitable for inoculation (deterioration) of alloys with silicon content greater than 4% in aluminum alloys. ) treatment, Ti elements will react with Si elements to form TiSi, TiSi 2 and Ti 5 Si 3 The poisoning effect occurs due to equal phases, and the structure refinement efficiency is greatly reduced. The Al-B modifier has an excellent effect on the structure refinement of the Al-Si alloy system that does not contain Ti elements, but it occurs when the Ti impurity content in the alloy is higher than 0.04%. It has the same poisoning effect as Al-Ti-B and other modifiers, and has a narrow scope of application to the alloy system, and has extremely high requirements on the purity of aluminum alloys, so the scope of application is limited
Other modifiers or inoculants such as: Al-Sr, Al-Ce, Al-La, etc. contain rare earths, the cost is high, and the effect on the refinement of Al-Si alloy structure is not significant

Method used

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  • Method for refining aluminum alloy by using metallic glass
  • Method for refining aluminum alloy by using metallic glass
  • Method for refining aluminum alloy by using metallic glass

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0050] A method for refining aluminum alloys using metallic glass, comprising the steps of:

[0051] Step 1, the preparation of metallic glass:

[0052] a. Polish the surface oxide films of Zr, Cu, Al and Ni, then prepare them in proportion and place them in a beaker filled with absolute alcohol to prevent them from oxidizing;

[0053] b. Stack the prepared Zr, Cu, Al, and Ni in the water-cooled copper mold crucible according to the melting point from low to high, so as to shorten the melting time of high melting point metals and prevent the volatilization of low melting point metals;

[0054] c. Cover the furnace cover and vacuumize twice before the formal smelting, each time the vacuum reaches 6.0×10 -3 Pa and filled with high-purity Ar gas to dilute residual oxygen;

[0055] d. After two times of vacuuming, fill it with high-purity Ar gas of 0.5 atmospheres to dilute the residual oxygen in the furnace;

[0056] e. Turn on the magnetic stirring to smelt the alloy. In orde...

Embodiment 2

[0077] A method for refining aluminum alloys using metallic glass, comprising the steps of:

[0078] Step 1, the preparation of metallic glass:

[0079] a. Polish the surface oxide films of Zr, Cu, Al and Ni, then prepare them in proportion and place them in a beaker filled with absolute alcohol to prevent them from oxidizing;

[0080] b. Stack the prepared Zr, Cu, Al, and Ni in the water-cooled copper mold crucible according to the melting point from low to high, so as to shorten the melting time of high melting point metals and prevent the volatilization of low melting point metals;

[0081] c. Cover the furnace cover and vacuumize twice before the formal smelting, each time the vacuum reaches 6.0×10 -3 Pa and filled with high-purity Ar gas to dilute residual oxygen;

[0082] d. After two times of vacuuming, fill it with high-purity Ar gas of 0.5 atmospheres to dilute the residual oxygen in the furnace;

[0083] e. Turn on the magnetic stirring to smelt the alloy. In orde...

Embodiment 3

[0104] A method for refining aluminum alloys using metallic glass, comprising the steps of:

[0105] Step 1, the preparation of metallic glass:

[0106] a. Polish the surface oxide films of Zr, Cu, Al and Ni, then prepare them in proportion and place them in a beaker filled with absolute alcohol to prevent them from oxidizing;

[0107] b. Stack the prepared Zr, Cu, Al, and Ni in the water-cooled copper mold crucible according to the melting point from low to high, so as to shorten the melting time of high melting point metals and prevent the volatilization of low melting point metals;

[0108] c. Cover the furnace cover and vacuumize twice before the formal smelting, each time the vacuum reaches 6.0×10 -3 Pa and filled with high-purity Ar gas to dilute residual oxygen;

[0109] d. After two times of vacuuming, fill it with high-purity Ar gas of 0.5 atmospheres to dilute the residual oxygen in the furnace;

[0110] e. Turn on the magnetic stirring to smelt the alloy. In orde...

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Abstract

The invention discloses a method for refining aluminum alloy by using metallic glass and relates to the field of aluminum alloy processing. The method comprises the four steps of preparation of the metallic glass, preparation of amorphous ribbons, preparation of non-refined aluminum alloy and refinement of the aluminum alloy. By means of the technical scheme, the steps are reasonable; the refinement efficiency is high; the strength and toughness of the aluminum alloy are improved substantially; inoculation is efficient; and the method is low in cost and has huge industrial application potential and value.

Description

technical field [0001] The invention relates to the field of aluminum alloy processing, in particular to a method for refining aluminum alloy by using metallic glass. Background technique [0002] Today, with the rapid development of high-tech fields such as aerospace, automobiles, and national defense, not only the lightweight of structural materials is required, but also the requirements for their comprehensive performance are getting higher and higher. Aluminum alloy is a very important structural material and lightweight material. With the development of science and technology and industry, the demand for lightweight, high-strength and high-toughness aluminum alloy structural materials is increasing. Whether it is cast aluminum alloy or deformed aluminum alloy, it needs to go through the process of solidification from the melt to form the cast structure. The solidification structure directly affects the efficiency and cost of subsequent processing procedures, and ultim...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C1/03C22C1/06C22C21/04
CPCC22C1/02C22C1/026C22C1/03C22C1/06C22C16/00C22C21/00C22C21/04C22C1/11
Inventor 邱丰姜启川朱琳
Owner JILIN UNIV
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