A kind of aluminum alloy with high zinc content and preparation method thereof

A technology of aluminum alloy and content, which is applied in the field of material processing, can solve the problems of limited comprehensive mechanical properties of alloys and failure to meet the standard requirements of ultra-high-strength aluminum alloys, and achieve the effect of excellent surface quality

Active Publication Date: 2017-09-29
AVIC BEIJING INST OF AERONAUTICAL MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this method is very limited in improving the comprehensive mechanical properties of the alloy, and cannot meet the standard requirements of ultra-high-strength aluminum alloys.

Method used

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  • A kind of aluminum alloy with high zinc content and preparation method thereof
  • A kind of aluminum alloy with high zinc content and preparation method thereof
  • A kind of aluminum alloy with high zinc content and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] 1. Alloy composition ratio

[0023]

[0024]

[0025] 2. Preparation materials

[0026] 1. Melt refined Al ingots, Zn ingots, Mg ingots and master alloys Al-Cu, Al-Zr and Al-Be at 720℃;

[0027] 2. After the alloy is completely melted, after the temperature is stabilized, it is processed by multi-layer ceramic melt filtration technology and chlorine-argon mixed gas refining technology, and the same level of hot-top water-cooled semi-continuous casting is carried out in the temperature range of 675-685℃;

[0028] 3. After the blank is homogenized, it is extruded at 400-420°C into a round rod of Φ15mm.

[0029] Three, performance test

[0030] The mechanical properties of the finally obtained extruded bar are tested. The result is:

[0031] Mechanical properties

Embodiment 2

[0033] 1. Alloy composition ratio

[0034] element

Zn

Mg

Cu

Zr

Be

Al

Content (wt.%)

12

3.0

2.3

0.12

0.001

Bal.

[0035] 2. Preparation materials

[0036] 1. Melt refined Al ingots, Zn ingots, Mg ingots and master alloys Al-Cu, Al-Zr and Al-Be at 720℃;

[0037] 2. After the alloy is completely melted, after the temperature is stabilized, it is processed by multi-layer ceramic melt filtration technology and chlorine-argon mixed gas refining technology, and the same level of hot-top water-cooled semi-continuous casting is carried out in the temperature range of 675-685℃;

[0038] 3. After the blank is homogenized, it is extruded at 400-420°C into a round rod of Φ15mm.

[0039] Three, performance test

[0040] The mechanical properties of the finally obtained extruded bar are tested. The result is:

[0041] Mechanical properties

Embodiment 3

[0043] 1. Alloy composition ratio

[0044] element

Zn

Mg

Cu

Zr

Be

Al

Content (wt.%)

13.5

3.5

2.5

0.08

0.0005

Bal.

[0045] 2. Preparation materials

[0046] 1. Melt refined Al ingots, Zn ingots, Mg ingots and master alloys Al-Cu, Al-Zr and Al-Be at 720℃;

[0047] 2. After the alloy is completely melted, after the temperature is stabilized, it is processed by multi-layer ceramic melt filtration technology and chlorine-argon mixed gas refining technology, and the same level of hot-top water-cooled semi-continuous casting is carried out in the temperature range of 675-685℃;

[0048] 3. After the blank is homogenized, it is extruded at 400-420°C into a round rod of Φ15mm.

[0049] Three, performance test

[0050] The mechanical properties of the finally obtained extruded bar are tested. The result is:

[0051]

[0052]

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Abstract

The invention relates to an aluminum alloy with high zinc content and a preparation method thereof, belonging to the field of material processing. The standard requirements for materials in various industries are gradually changing to the direction of ultra-high strength and ultra-light weight. This demand is especially prominent in military fields such as aerospace. Under the condition of providing the same load-carrying capacity, the higher the strength of the material, the less supporting material is required, thereby reducing the overall mass. Since the casting process determines the heat transfer, mass transfer and melt flow of the melt, it becomes an important factor in determining its final microstructure. The invention adopts water-cooled semi-continuous casting on the same level hot top, combines multi-layer ceramic melt filtration technology and chlorine-argon mixed gas refining technology, and prepares ultra-high-strength aluminum alloy with Zn content of 11.5-13.5%. While maintaining the internal quality, it can smoothly realize the molding of aluminum alloy ingots with high zinc content, and has excellent surface quality.

Description

Technical field [0001] The invention relates to an aluminum alloy with high zinc content and a preparation method thereof, and belongs to the field of material processing. Background technique [0002] In recent years, green sustainable development has been deeply rooted in the hearts of the people. In industrial production, how to save energy, improve efficiency, shorten technological processes, and reduce energy consumption and pollution at the same time has become the focus of attention. Therefore, the standard requirements for materials in various industries are gradually shifting to ultra-high strength and ultra-light weight. This demand is particularly prominent in military fields such as aerospace. Under the condition of providing the same load-bearing capacity, the higher the strength of the material, the less support material is needed, which reduces the overall quality. Therefore, the strengthening and lightening of materials has become the tireless pursuit of the aviat...

Claims

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Application Information

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Patent Type & AuthorityPatents(China)
IPC IPC(8): C22C21/10C22C1/03C22F1/053
Inventor杨守杰于海军王玉灵戴圣龙
OwnerAVIC BEIJING INST OF AERONAUTICAL MATERIALS