High-strength aluminum alloy

An aluminum alloy, high-strength technology, applied in the field of high-strength aluminum alloys, can solve the problems of poor comprehensive performance of aluminum alloys and difficulty in breaking through the strength of aluminum alloys, and achieve the effect of improving specific strength

Inactive Publication Date: 2013-01-16
昆山市源丰铝业有限公司
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Problems solved by technology

[0003] For traditional Al-Zn-Mg-Cu aluminum alloys, since the Zn content in the aluminum alloy is controlled at about 5.5%, it ...

Method used

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Embodiment Construction

[0009] The preferred embodiments of the present invention are described in detail below, so that the advantages and features of the present invention can be more easily understood by those skilled in the art, so as to define the protection scope of the present invention more clearly.

[0010] Embodiments of the invention include:

[0011] A high-strength aluminum alloy is an Al-Zn-Mg-Cu series aluminum alloy plate, including the following components by mass percentage: Zn: 7.0%-9.0%, Mg: 1.3%-2.0%, Cu: 1.5%-3.0%, Si: ≤0.1%, Mn: 0.1%-0.3%, Fe: ≤0.3%, the rest is Al and unavoidable trace elements, and Zn / Mg: 3.0 -3.5.

[0012] Wherein, the inevitable microalloying elements include Li, Sc, Zr, Ag and Be.

[0013] The mass percentage of the inevitable microalloying elements is 0.05%-1.0%.

[0014] The role of each trace element is as follows:

[0015] Li: It has a low density and is the lightest metal. Used in aluminum alloys, it can reduce the weight of aluminum alloys, im...

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PUM

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Abstract

The invention discloses a high-strength aluminum alloy which is an Al-Zn-Mg-Cu aluminum alloy. The high-strength aluminum alloy comprises the following components in percentage by mass: 7.0-9.0 percent of Zn, 1.3-2.0 percent of Mg, 1.5-3.0 percent of Cu, no more than 0.1 percent of Si, 0.1-0.3 percent of Mn, no more than 0.3 percent of Fe and the balance of Al and inevitable trace elements, wherein the ratio of Zn to Mg is 3.0-3.5. In such a way, the specific strength, the hardness, the corrosion resistance, the toughness, the machining performance, the welding performance and the like of the aluminum alloy can be improved.

Description

technical field [0001] The invention relates to the field of metal materials, in particular to a high-strength aluminum alloy. Background technique [0002] 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 and low cost. It is widely used in the fields of aviation, transportation, ships and weapons, etc., and has extremely high application value. [0003] For traditional Al-Zn-Mg-Cu aluminum alloys, since 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 700 MPa, and the comprehensive performance of the aluminum alloy is not good. Contents of the invention [0004] The technical problem mainly solved by the present invention is to provide a high-strength aluminum alloy which can improve the specific stre...

Claims

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Application Information

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IPC IPC(8): C22C21/10
Inventor 朱培元
Owner 昆山市源丰铝业有限公司
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