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Al-zn-mg-cu alloy

An aluminum alloy product and alloy technology, applied in the field of wrought aluminum-zinc-magnesium-copper aluminum type, to achieve the effect of easy recycling capacity and cost reduction

Active Publication Date: 2006-05-31
NOVELIS KOBLENZ GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] A similar balance of properties is required for the lower wing skin, but some toughness can be sacrificed for higher tensile strength

Method used

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Examples

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Embodiment Construction

[0048] The design of commercial aircraft requires different types of structural components with different combinations of properties. However, when an alloy is processed into different product forms (that is, sheet, plate, thick plate, forging or extruded profiles, etc.) and used in multiple structural components, where the component has different load sequences during its service life and The alloy must therefore be extremely versatile in order to meet the different material requirements of all these product forms.

[0049] Important properties of materials for fuselage sheet products are failure tolerance properties under tensile loading (ie: FCGR, fracture toughness and corrosion resistance).

[0050] For the lower wing skins of large commercial jets, the material's critical properties are similar to those required for fuselage sheets, but higher tensile strength is specifically desired by aircraft manufacturers. In addition, fatigue life is also a major material property....

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Abstract

The present invention relates to an aluminum alloy product, the basic composition of the alloy is, by weight %, zinc (Zn) of about 6.5-9.5%, magnesium (Mg) of about 1.2-2.2%, copper (Cu) of about 1.0-1.9% , preferably (0.9Mg-0.6)≤Cu≤(0.9Mg+0.05), about 0~0.5% zirconium (Zr), about 0~0.7% scandium (Sc), about 0~0.4% chromium (Cr), about 0 -0.3% hafnium (Hf), about 0-0.4% titanium (Ti), about 0-0.8% manganese (Mn), balance aluminum and other incidental elements. The invention also relates to a method for the manufacture of the alloy.

Description

field of invention [0001] The present invention relates to wrought aluminum-zinc-magnesium-copper aluminum types (or 7000- or 7xxx-series aluminum alloys as the Aluminum Association names them). More particularly, the present invention relates to an age-hardenable, high strength, high fracture toughness and high corrosion resistance aluminum alloy and products made from this alloy. Products manufactured from this alloy are well suited for, but not limited to, aerospace applications. This alloy can be processed into a variety of different product forms such as sheet, thin plate, thick plate, extruded products or forged products. [0002] In the various product forms manufactured from this alloy, the combination of properties obtainable is superior to products manufactured from presently known alloys. Thanks to the invention, the uni-alloy concept can now also be used for aerospace applications. This will significantly reduce the cost of the aerospace industry. The ability t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C21/10C22F1/053
CPCC22C21/10C22F1/053Y10T428/12389Y10T428/12
Inventor R·贝内迪克特斯C·J·凯德尔A·L·海因茨N·泰利奥
Owner NOVELIS KOBLENZ GMBH
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