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Stirring dispersing process for inoculating and refining aluminum alloy through amorphous alloy

An amorphous alloy, stirring and dispersing technology, which is applied in the field of aluminum alloy processing, can solve the problems of insignificant microstructure refinement effect of Al-Si alloy, limited application scope, and reduced microstructure refinement efficiency, and achieves huge industrial application potential and value. , Improve toughness and breed high-efficiency effects

Inactive Publication Date: 2017-09-19
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 element will react with Si element to form TiSi, TiSi2 and Ti5Si3 and other phases to produce poisoning effect, and the efficiency of microstructure refinement will be greatly reduced. Al-B modifier can refine Al-Si alloy system without Ti The microstructure effect is excellent, but when the Ti impurity content in the alloy is higher than 0.04%, it will have the same poisoning effect as Al-Ti-B and other modifiers. The application range of the alloy system is narrow, and the purity of the aluminum alloy is extremely high. limited scope
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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  • Stirring dispersing process for inoculating and refining aluminum alloy through amorphous alloy
  • Stirring dispersing process for inoculating and refining aluminum alloy through amorphous alloy
  • Stirring dispersing process for inoculating and refining aluminum alloy through amorphous alloy

Examples

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Effect test

Embodiment 1

[0052] A stirring and dispersing process for inoculating and refining aluminum alloys with amorphous alloys, comprising the following steps:

[0053] Step 1, preparation of amorphous alloy:

[0054] a. Polish the oxide film on the surface of Ni, Nb and Ti, then prepare it in proportion and place it in a beaker filled with absolute alcohol to prevent it from oxidation;

[0055] b. Stack the prepared Ni, Nb, and Ti 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;

[0056] 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;

[0057] 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;

[0058] e. Turn on the magneti...

Embodiment 2

[0080] A stirring and dispersing process for inoculating and refining aluminum alloys with amorphous alloys, comprising the following steps:

[0081] Step 1, preparation of amorphous alloy:

[0082] a. Polish the oxide film on the surface of Ni, Nb and Ti, then prepare it in proportion and place it in a beaker filled with absolute alcohol to prevent it from oxidation;

[0083] b. Stack the prepared Ni, Nb, and Ti 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;

[0084] 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;

[0085] 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;

[0086] e. Turn on the magneti...

Embodiment 3

[0108] A stirring and dispersing process for inoculating and refining aluminum alloys with amorphous alloys, comprising the following steps:

[0109] Step 1, preparation of amorphous alloy:

[0110] a. Polish the oxide film on the surface of Ni, Nb and Ti, then prepare it in proportion and place it in a beaker filled with absolute alcohol to prevent it from oxidation;

[0111] b. Stack the prepared Ni, Nb, and Ti 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;

[0112] 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;

[0113] 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;

[0114] e. Turn on the magneti...

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Abstract

The invention discloses a stirring dispersing process for inoculating and refining aluminum alloy through amorphous alloy and relates to the field of aluminum alloy processing. The stirring dispersing process comprises the four steps of preparation of the amorphous alloy, preparation of an amorphous ribbon, preparation of non-incubated aluminum alloy and inoculation of the aluminum alloy. With the adoption of the technical scheme, the steps are reasonable, the refining efficiency is high, obdurability of the aluminum alloy is improved significantly, inoculation is efficient, cost is low, and the stirring dispersing process has great industrial application potential and value.

Description

technical field [0001] The invention relates to the field of aluminum alloy processing, in particular to a stirring and dispersing process for inoculating and refining aluminum alloys with amorphous alloys. 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 sub...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C1/06C22C1/02C22C45/04
CPCC22C1/026C22C1/03C22C1/06C22C45/04C22C1/11
Inventor 邱丰姜启川朱琳
Owner JILIN UNIV
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