High-strength aluminum alloy

An aluminum alloy and high-strength technology, which is applied in the field of high-strength aluminum alloy and aluminum alloy, can solve the problems of poor comprehensive performance of aluminum alloy and difficulty in breaking through 700MPa in the strength of aluminum alloy, and achieve good anti-aging stability.

Inactive Publication Date: 2016-02-24
无棣向上机械设计服务有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the traditional Al-Zn-Mg-Cu aluminum alloy, because the Zn content in the aluminum alloy is controlled at about 5.5%, it is difficult for the strength of the aluminum alloy to exceed 700MPa, and the comprehensive performance of the aluminum alloy is not good.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] A high-strength aluminum alloy, the high-strength aluminum alloy is composed of the following components in weight percentage: Zn: 2.5%, Mg: 2.3%, Cu: 3.1%, Mn: 0.01%, Zr: 2.0%, Ti: 3.0%, Nb: 4.5%, Ta: 2.5%, Be: 0.03%, Co: 0.8%, Ru: 1.8%, Hf: 0.05%, Re: 0.02%, Si: 0.1%, Fe: 0.3%, P: 0.005%, S: 0.005%, Y0.08%, the rest are Al and unavoidable trace elements.

[0020] The mass percentage of unavoidable microalloying elements is 0.001%%.

[0021] The mechanical properties of the prepared aluminum alloy are: yield strength 750Mpa, tensile strength 1000Mpa, elongation 18%.

Embodiment 2

[0023] A high-strength aluminum alloy, the high-strength aluminum alloy is composed of the following components by weight percentage: Zn: 6.5%, Mg: 4.0%, Cu: 5.5%, Mn: 0.1%, Zr: 6.2%, Ti: 5.5%, Nb: 6.0%, Ta: 3.5%, Be: 0.06%, Co: 1.2%, Ru: 3.0%, Hf: 0.2%, Re: 0.1%, Si: 0.01%, Fe: 0.03%, P: 0.004%, S: 0.004%, Y0.06%, the rest is Al and unavoidable trace elements; the mass percentage of unavoidable microalloying elements is 0.01%.

[0024] The mechanical properties of the prepared aluminum alloy are: yield strength 785Mpa, tensile strength 1150Mpa, elongation 25%.

Embodiment 3

[0026] A high-strength aluminum alloy, the high-strength aluminum alloy is composed of the following components in weight percentage: Zn: 3.5%, Mg: 2.5%, Cu: 3.5%, Mn: 0.05%, Zr: 3.0%, Ti: 3.5%, Nb: 5.0%, Ta: 2.8%, Be: 0.04%, Co: 0.9%, Ru: 2.0%, Hf: 0.09%, Re: 0.05%, Si: 0.05%, Fe: 0.2%, P: 0.005%, S: 0.005%, Y0.08%, the rest is Al and unavoidable trace elements. The mass percentage of unavoidable microalloying elements is 0.005%.

[0027] The mechanical properties of the prepared aluminum alloy are: yield strength 868Mpa, tensile strength 1050Mpa, elongation 55%.

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Abstract

The invention discloses a high-strength aluminum alloy. The high-strength aluminum alloy comprises, by weight percent, 2.5%-6.5% of Zn, 2.3%-4.0% of Mg, 3.1%-5.5% of Cu, 0.01%-0.1% of Mn, 2.0%-6.2% of Zr, 3.0%-5.5% of Ti, 4.5%-6.0% of Nb, 2.5%-3.5% of Ta, 0.03%-0.06% of Be, 0.8%-1.2% of Co, 1.8%-3.0% of Ru, 0.05%-0.2% of Hf, 0.02%-0.1% of Re, not larger than 0.1% of Si, not larger than 0.3% of Fe, not larger than 0.005% of P, not larger than 0.005% of S, not larger than 0.08% of Y and the balance Al and inevitable microelements.

Description

technical field [0001] The invention relates to an aluminum alloy, in particular to a high-strength aluminum alloy. The invention belongs to the technical field of metal material smelting. Background technique [0002] Aluminum alloy has the characteristics of low density, high specific strength and specific stiffness, good corrosion resistance, excellent electrical and thermal conductivity, easy recycling, and good low-temperature performance. It is widely used in transportation, aerospace, electronics and other fields. The main alloying elements of aluminum alloys are silicon, copper, magnesium, zinc, etc. Different alloying elements and their amounts have different effects on the microstructure and properties of the alloy. [0003] Al-Zn-Mg-Cu series aluminum alloy is a kind of high-performance aluminum alloy developed and developed in the 1960s with the background of aerospace materials. It has a series of advantages such as light weight, high strength, high toughness a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C21/10C22C21/00C22C21/18C22C21/16
CPCC22C21/10C22C21/00C22C21/16C22C21/18
Inventor 姬胜国
Owner 无棣向上机械设计服务有限公司
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