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A kind of closed-cell foamed aluminum alloy containing Zr and Er and its preparation method

A foamed aluminum alloy and closed-cell foam technology, which is applied in the field of metal materials, can solve problems such as low strength, and achieve the effects of increasing strength, refining grains, and improving compressive yield strength.

Active Publication Date: 2019-12-10
北京世联信诺科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, due to the existence of a large number of pores, the strength of traditional closed-cell aluminum foam is generally low, usually lower than 10MPa, which cannot meet the needs of some secondary load-bearing structures.

Method used

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  • A kind of closed-cell foamed aluminum alloy containing Zr and Er and its preparation method
  • A kind of closed-cell foamed aluminum alloy containing Zr and Er and its preparation method
  • A kind of closed-cell foamed aluminum alloy containing Zr and Er and its preparation method

Examples

Experimental program
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Effect test

Embodiment 1

[0033] A closed-cell foamed aluminum alloy containing Zr and Er disclosed in this embodiment has the following mass percentages of its components: Zr: 0.25%, Er: 0.53%, Ti: 0.12%, impurities equal to 0.08%, and the balance is aluminum .

[0034] The preparation method of the closed-cell aluminum alloy containing Zr and Er described in embodiment 1 is as follows:

[0035] Step 1: Add aluminum, Ti, Er, Zr and other components into the melting furnace according to the mass ratio, wherein aluminum is in the form of pure aluminum, Ti, Er, and Zr are in the form of AlTi4, AlEr2, and AlZr4 master alloys respectively, and each Superheat the alloy components to 830°C, and stir for 10 minutes after all the components are melted;

[0036] Step 2: Then, cool the aluminum alloy melt to 710°C, add 0.4% refining agent, stir for 12 minutes, and let stand for 10 minutes;

[0037] Step 3: Transfer the aluminum alloy melt into a foaming furnace, control the temperature of the aluminum melt to ...

Embodiment 2

[0041] A closed-cell foamed aluminum alloy containing Zr and Er disclosed in Example 2 has the following mass percentages of its components: Zr: 0.38%, Er: 0.63%, Ti: 0.22%, impurities equal to 0.93%, and the rest The amount is aluminum.

[0042] The closed-cell foamed aluminum alloy containing Zr and Er described in embodiment 2, its preparation method is as follows:

[0043] Step 1: According to the mass ratio, add aluminum, Ti, Er, Zr and other components into the melting furnace, wherein aluminum is in the form of pure aluminum, Ti, Er, and Zr are in the form of AlTi4, AlEr2, and AlZr4 master alloys respectively, and the alloy The components are overheated to 840°C, and after all the alloy components are melted into an aluminum alloy melt, stir for 15 minutes;

[0044] Step 2: Then, cool down the aluminum alloy melt to 720°C, add 0.45% refining agent, stir for 15 minutes, and let stand for 15 minutes;

[0045] Step 3: Transfer the aluminum alloy melt into a foaming furna...

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Abstract

The invention relates to a closed-cell foamed aluminum alloy containing Zr, Er, and Ti, which is characterized in that: the closed-cell foamed aluminum alloy has the following components by weight percentage: Zr: 0.3-0.6%, Er: 0.5% ~0.8%, Ti: 0.1~0.6%, impurity is less than or equal to 0.1%, and the balance is aluminum. The closed-cell foamed aluminum alloy of the invention has high strength and is easy to produce. Compared with the traditional closed-cell foamed aluminum, its compressive strength is significantly improved under the same porosity.

Description

technical field [0001] The invention belongs to the field of metal materials, and relates to a closed-cell foamed aluminum alloy containing Zr and Er and a preparation method thereof. Background technique [0002] Closed-cell aluminum foam is a lightweight porous composite material composed of metal skeleton and air, which has multiple functional properties, such as density lighter than water, energy absorption, sound insulation, heat insulation, electronic shielding, etc. Sound insulation screens on both sides of the expressway, buffer bases for anti-aircraft guns, etc. However, due to the existence of a large number of pores, the strength of traditional closed-cell aluminum foam is generally low, usually lower than 10MPa, which cannot meet the needs of some secondary load-bearing structures. In order to further expand the application of closed-cell aluminum foam, it is imperative to increase the strength of aluminum foam under the premise of ensuring its porosity. Conte...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C21/00C22C1/08C22C1/06C22C1/03C22F1/04
CPCC22C1/026C22C1/03C22C1/06C22C1/08C22C21/00C22F1/04C22C1/083
Inventor 周广顺
Owner 北京世联信诺科技有限公司
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