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Closed-cell foam aluminum alloy and preparation method thereof

A technology of closed-cell foam and aluminum alloy, which is applied in the field of metal materials, can solve the problems of low strength of closed-cell foam aluminum, achieve strength improvement, keep compression yield strength stable, and solve the effects of uneven aging strengthening

Inactive Publication Date: 2018-06-08
北京世联信诺科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, closed-cell aluminum foam has limited its application to some extent due to its low strength.

Method used

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  • Closed-cell foam aluminum alloy and preparation method thereof
  • Closed-cell foam aluminum alloy and preparation method thereof
  • Closed-cell foam aluminum alloy and preparation method thereof

Examples

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Embodiment 1

[0028] The present embodiment discloses a high-strength closed-cell foamed aluminum alloy that can be uniformly heat-treated and strengthened. The mass percentage of each component is Sc: 0.5%, Zr: 0.13%, Ti: 1.1%, and the balance is aluminum and a small amount of impurities.

[0029] The preparation method of the closed-cell foamed aluminum alloy described in Example 1 is as follows:

[0030] Step 1: Heat and melt pure aluminum and other alloy components Ti, Sc, Zr in a furnace according to mass percentage, and overheat to 860°C. After all the alloys are melted, stir for 10 minutes to cool the aluminum melt to 700°C , Adding 1.8% of the total weight of the melt (the mass ratio of hexachloroethane to sodium fluoride is 1:1.8), stirring for 10 minutes, and then vacuum degassing the aluminum melt and let it stand for 10 minutes; , Ti, Sc, Zr are added in the form of AlTi4, AlSc2, AlZr4 master alloy.

[0031] Step 2: Transfer the aluminum melt to the foaming furnace, control the temper...

Embodiment 2

[0036] The present embodiment 2 discloses a high-strength closed-cell foamed aluminum alloy that can be uniformly heat-treated and strengthened. The mass percentages of each component are as follows: Sc: 0.58%, Zr: 0.18%, Ti: 1.6%, and the balance is aluminum.

[0037] The preparation method of the closed-cell foamed aluminum alloy described in embodiment 2 is as follows:

[0038] Step 1: Heat and melt pure aluminum, AlTi4, AlSc2, AlZr4 master alloy in a furnace, where the added pure aluminum, AlTi4, AlSc2, AlZr4 master alloy makes the content of Sc, Zr, Ti the same as the content of Example 2 After the alloy is completely melted into aluminum melt, stir for 12 minutes, cool the aluminum melt to 710°C, add 1.9% refining agent of the total weight of the melt, stir for 12 minutes, and then vacuum the aluminum melt Degassing treatment, let stand for 15min;

[0039] Step 2: Transfer the aluminum melt to the foaming furnace, control the aluminum melt temperature at 710°C, add 2.8% of the...

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Abstract

The invention relates to closed-cell foam aluminum alloy. The closed-cell foam aluminum alloy is prepared from aluminum, scandium, zirconium and titanium, wherein the mass of the scandium accounts for0.4-0.6% of that of the foam aluminum alloy, the mass of the zirconium accounts for 0.02-0.2% of that of the foam aluminum alloy, the mass of the titanium accounts for 0.5-2% of that of the foam aluminum alloy, and the content of other impurities does not exceed 0.8%. After being subjected to aging treatment, the closed-cell foamed aluminum alloy provided by the invention has the strength increased by nearly 88% compared with the conventional foamed aluminum, and can maintain the compressive yield strength to be stable for a long time at 330 DEG C, so that the problem that the performance aging enhancement of the surface and inside of the foamed aluminium is not uniform due to slow heat conduction of the closed-cell foam aluminum alloy can be effectively solved.

Description

Technical field [0001] The application belongs to the field of metal materials, and relates to a high-strength closed-cell foamed aluminum alloy that can be uniformly heat-treated and strengthened. Background technique [0002] Closed-cell aluminum foam is a lightweight aluminum-based composite material composed of gas and metal framework. It has many excellent properties due to its unique physical structure. It has light weight (ρ<1), high specific strength and specific rigidity, and at the same time With multiple characteristics such as sound insulation, heat insulation, flame retardancy, damping, impact energy absorption and electromagnetic shielding, it has realized the lightweight and multifunctional structure of structural materials and has a wide range of application prospects. [0003] At present, closed-cell aluminum foam has a low strength, which limits its application to a certain extent. Closed-cell aluminum foam is mainly used as a functional material, and a small ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C21/00C22C1/08C22C1/06C22C1/03
CPCC22C1/03C22C1/06C22C1/08C22C21/00C22C1/086
Inventor 周广顺
Owner 北京世联信诺科技有限公司
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