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Additive process for inoculating refined aluminum alloy by utilizing amorphous alloy

An amorphous alloy and aluminum alloy technology, applied in the field of aluminum alloy processing, can solve the problems of insignificant structure refinement effect of Al-Si alloy, extremely high purity requirements of aluminum alloy, and narrow application range of alloy system, etc. Application potential and value, optimization of aluminum alloy microstructure and mechanical properties, and low cost effect

Inactive Publication Date: 2018-06-08
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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  • Additive process for inoculating refined aluminum alloy by utilizing amorphous alloy
  • Additive process for inoculating refined aluminum alloy by utilizing amorphous alloy
  • Additive process for inoculating refined aluminum alloy by utilizing amorphous alloy

Examples

Experimental program
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Effect test

Embodiment 1

[0053] An additive process for inoculating and refining aluminum alloys with amorphous alloys, comprising the following steps:

[0054] Step 1, preparation of amorphous alloy:

[0055] a. Polish the oxide film on the surface of Fe, B and Si, then prepare it in proportion and place it in a beaker filled with absolute alcohol to prevent it from oxidation;

[0056] b. Stack the prepared Fe, B, and Si 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;

[0057] 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;

[0058] 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;

[0059] e. Turn on the magnetic stirring to sm...

Embodiment 2

[0080] An additive 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 Fe, B and Si, 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 Fe, B, and Si 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 magnetic stirring to sm...

Embodiment 3

[0107] An additive process for inoculating and refining aluminum alloys with amorphous alloys, comprising the following steps:

[0108] Step 1, preparation of amorphous alloy:

[0109] a. Polish the oxide film on the surface of Fe, B and Si, then prepare it in proportion and place it in a beaker filled with absolute alcohol to prevent it from oxidation;

[0110] b. Stack the prepared Fe, B, and Si 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;

[0111] 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;

[0112] 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;

[0113] e. Turn on the magnetic stirring to sm...

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Abstract

The invention discloses an additive process for inoculating a refined aluminum alloy by utilizing an amorphous alloy. The additive process for inoculating the refined aluminum alloy by utilizing the amorphous alloy relates to the field of aluminum alloy processing, and comprises the five steps of preparing the amorphous alloy; preparing an amorphous ribbon, preparing a precast block, preparing a non-inoculated aluminum alloy, and inoculating the aluminum alloy. By adopting the technical scheme provided by the invention, the additive process is reasonable in steps, high in refining efficiency,beneficial to greatly improving the toughness of the aluminum alloy, efficient in inoculating, low in cost, and great in industrial application potential and value.

Description

technical field [0001] The invention relates to the field of aluminum alloy processing, in particular to an additive 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 subsequent proces...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C1/06C22C33/00C22C45/02
CPCC22C1/026C22C1/03C22C1/06C22C33/003C22C45/02C22C1/11
Inventor 邱丰朱琳姜启川
Owner JILIN UNIV