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Anti-fading refiner, preparation method and application, aluminum alloy and refinement method thereof

A refiner and anti-recession technology, which is applied in the field of alloy processing, can solve the problems of sharp drop in grain refinement effect, poor anti-poisoning effect, and unsatisfactory anti-recession ability of the refiner, achieving remarkable anti-recession ability and easy Controlled, Effective Effects

Active Publication Date: 2022-02-01
JILIN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although TiC, TiB in the melt 2 , Ti(CN), etc. can be used as the heterogeneous nucleation core of ɑ-Al to refine the aluminum alloy grains, but its anti-poisoning effect is poor
At the same time, the anti-recession ability of the above-mentioned refiners cannot meet the requirements of industrial production. After a long time of heat preservation in the melt, the effect of grain refinement will be sharply reduced.

Method used

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  • Anti-fading refiner, preparation method and application, aluminum alloy and refinement method thereof
  • Anti-fading refiner, preparation method and application, aluminum alloy and refinement method thereof
  • Anti-fading refiner, preparation method and application, aluminum alloy and refinement method thereof

Examples

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Effect test

Embodiment 1

[0046] This example prepares a refiner for endogenous submicron solid solution particles, which can be used for refining the structure of alloys such as aluminum alloys, but is not limited thereto. Specifically, the refiner contains a chemical formula of (Ti 0.9 ,Nb 0.1 ) Titanium carbide solid solution particles of C, wherein the molar ratio of Al / Ti / Nb / C is 0.6:0.36:0.04:0.4, and the mass fraction of solid solution particles is 59.69wt.%. The preparation method of the refiner comprises the following steps :

[0047] S11. Powder preparation for the reaction compact: Weigh 40.31 grams of aluminum powder with a particle size of 13 μm, 39.94 grams of titanium powder with a particle size of 13 μm, 8.61 grams of niobium powder with a particle size of 20 μm, and 11.14 grams of carbon nanotubes (CNTs), and set aside.

[0048] S12. Mix the above-mentioned aluminum powder, titanium powder, niobium powder, and carbon nanotubes to obtain reactant powder; then, put the prepared reactan...

Embodiment 2

[0062] This example prepares a refiner for endogenous submicron solid solution particles, which can be used for refining the structure of alloys such as aluminum alloys, but is not limited thereto. Specifically, the refiner contains a chemical formula of (Ti 0.7 ,Nb 0.3 ) titanium carbide solid solution particles of C, wherein the molar ratio of Al / Ti / Nb / C is 0.7:0.21:0.09:0.3, the mass fraction of titanium carbide solid solution particles is 52.04%, the preparation method of the refiner comprises the following steps :

[0063] S11. Preparation of powder for the reaction compact: using carbon nanotubes as the carbon source, weigh 47.96 grams of aluminum powder with a particle size of 30 μm, 23.76 grams of titanium powder with a particle size of 20 μm, 19.77 grams of niobium powder with a particle size of 25 μm, and 8.52 grams of nano Carbon tube, spare. S12. Mix the above-mentioned aluminum powder, titanium powder, niobium powder, and carbon nanotubes to obtain a reactant p...

Embodiment 3

[0073] This example prepares a refiner for endogenous submicron solid solution particles, which can be used for refining the structure of alloys such as aluminum alloys, but is not limited thereto. Specifically, the refiner contains a chemical formula of (Ti 0.4 ,Nb 0.6 ) C titanium carbide solid solution particles, wherein the molar ratio of Al / Ti / Nb / C is 0.9:0.04:0.06:0.1, the mass fraction of titanium carbide solid solution particles is 24.99%, the preparation method of the refiner comprises the following steps :

[0074] S11. Preparation of powder for the reaction compact: using carbon nanotubes as the carbon source, weigh 75 grams of aluminum powder with a particle size of 30 μm, 5.51 grams of titanium powder with a particle size of 20 μm, 16.03 grams of niobium powder with a particle size of 25 μm, and 3.45 grams of nano Carbon tube, spare.

[0075]S12. Mix the above-mentioned aluminum powder, titanium powder, niobium powder, and carbon nanotubes to obtain a reactant ...

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Abstract

The invention is applicable to the technical field of alloy processing, and provides an anti-decay refiner, its preparation method and application, aluminum alloy and its refinement method. The refiner contains TiC solid solution particles doped with Nb, and its chemical formula is (Ti 1‑x Nb x )C, where, 0

Description

technical field [0001] The invention belongs to the technical field of alloy processing, and in particular relates to an anti-decay refining agent, a preparation method and application thereof, an aluminum alloy and a refining method thereof. Background technique [0002] The development of aerospace, national defense and transportation industries puts forward higher requirements on the quality and performance of materials. As a lightweight material, aluminum alloy has broad application prospects in the above fields. The as-cast structure of aluminum alloy has a great influence on the subsequent forming process, product quality and mechanical properties, so improving the as-cast structure of aluminum alloy is an important way to control the quality and performance of materials. Grain refinement is a key means to improve alloy structure and improve alloy performance. Adding a refiner to the alloy melt can obtain fine and uniform grains, which is easy to operate and has a sig...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C1/10C22C1/06C22C1/02
CPCC22C1/1036C22C1/06C22C1/026C22C1/1047
Inventor 赵庆龙宋业刚刘肖金伟苌亭姜启川
Owner JILIN UNIV