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Laminar compound aluminium alloy material with high intensity and preparation thereof

An aluminum alloy material, high-strength layer technology, applied in metal rolling, metal processing equipment, metal layered products, etc., can solve the problem of many process links, general tensile strength of 6009 alloy, affecting the improvement of the overall performance of the composite sheet, etc. problem, to achieve the effect of broad application prospects, good promotion and application prospects, and relaxation of internal stress

Inactive Publication Date: 2008-10-08
SOUTH CHINA UNIV OF TECH
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Problems solved by technology

6009 alloy is also a large amount of aluminum alloy, mainly used in the manufacture of automobile body sheet, the alloy has good corrosion resistance, excellent processing and forming performance, but the tensile strength of 6009 alloy is average
The aluminum plate produced by this method not only needs pretreatment of the plate, but also has many process links, and the joint interface of the plate is very thin, and the thickness of the interface is only on the order of microns, which is a fragile part of the composite plate, which greatly affects the improvement of the overall performance of the composite plate.

Method used

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  • Laminar compound aluminium alloy material with high intensity and preparation thereof
  • Laminar compound aluminium alloy material with high intensity and preparation thereof
  • Laminar compound aluminium alloy material with high intensity and preparation thereof

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Embodiment Construction

[0024] The present invention will be described in further detail below in conjunction with the embodiments and accompanying drawings, but the implementation of the present invention is not limited thereto.

[0025] 1. Casting:

[0026] Adopt raw material industrial pure aluminum, industrial pure magnesium, industrial pure zinc, industrial chromium agent, Al-25% Si master alloy, Al-20% Mn master alloy and Al-50% Cu master alloy (weight percentage) to smelt 6009 alloy and respectively 7075 alloy. The outer layer is a corrosion-resistant aluminum alloy 6009 aluminum alloy with excellent formability. The high-strength and tough aluminum alloy has a composition (weight percentage) range of: Al-5.1-6.1Zn-2.0-3.0Mg-1.2-2.0Cu-0.16-0.3Cr, wherein the composition of the 7075 alloy is the upper limit of the composition of the alloy. Composite castings were prepared on a double-strand casting semi-continuous casting device. In order to obtain gradient composite castings without casting ...

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Abstract

The invention relates to a metallic material and the technical field of the processing of the metallic material, in particular to a high-strength layered composite aluminum alloy material with excellent shaping performance and a preparation method; wherein, 6009 aluminum alloy with excellent shaping performance serves as the external layer of the material and 7075 aluminum alloy with high tenacious degree serves as the internal layer; a transition layer with a thickness of millimeter magnitude and components varying in gradient is arranged between the two layers; the contents of zinc and magnesium contained in the components of internal aluminum alloy are lowered in gradient from inside to outside; the material has excellent shaping performance as 6009 aluminum alloy does; besides, the anti-corrosion performance of the material corresponds to that of 6009 aluminum alloy, while the strength is 50 % higher than that of 6009 aluminum alloy. The material has the advantages of good shaping performance, anti-corrosion and high strength and can be widely used in the fields of automobile, petrochemical industry, aviation, etc.

Description

technical field [0001] The invention relates to the technical field of metal materials and processing thereof, in particular to a high-strength layered composite aluminum alloy material with excellent formability and a preparation method thereof. Background technique [0002] Aluminum alloys are generally divided into cast aluminum alloys and deformed aluminum alloys. In the wrought aluminum alloy, according to different application occasions, it can be divided into clad aluminum, rust-proof aluminum, duralumin, wrought aluminum and super duralumin. The 7XXX series aluminum alloys with Al-Zn-Mg as the main alloy components are the highest strength aluminum alloys among wrought aluminum alloys. The 6XXX series aluminum alloys with Al-Si-Mg as the main alloy components have a wide range of applications in construction, transportation, chemical industry, aviation and other fields due to their excellent formability and corrosion resistance. However, this type of alloy is faced...

Claims

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Application Information

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IPC IPC(8): B32B15/01B22D11/00B21J5/00B21B1/22
Inventor 张卫文李元元罗宗强赵海东郑小平
Owner SOUTH CHINA UNIV OF TECH
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