Patent · US Expired

Balanced Al-Cu-Mg-Si alloy product

US7604704B2 · kind B2 · utility

1Cited by

22References

32Claims

0Family size

Assignee

ALERIS ALUMINUM KOBLENZ GMBH · DE

Inventors

Rinze Benedictus · Delft, NL
Christian Joachim Keidel · Montabaur, DE
Alfred Ludwig Heinz · Niederahr, DE
Alfred Johann Peter Haszler · Vallendar, DE

Key dates

Filing date	Aug 18, 2003
Grant date	Oct 20, 2009
Priority date	—
Expiry date	Aug 18, 2023

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC22F1/002
WIPO fieldMaterials, metallurgy
WIPO sectorChemistry

Abstract

The present invention concerns a balanced Al—Cu—Mg—Si alloy having a high toughness, good strength levels and an improved fatigue crack growth resistance, comprising essentially the following composition (in weight percent): Cu: 3.6-4.9, Mg: 1.0-1.8, Mn:≦0.50, preferably <0.30, Si: 0.10-0.40, Zr:≦0.15, Cr:≦0.15, Fe:≦0.10, the balance essentially aluminum and incidental elements and impurities. There is also disclosed a method for producing the balanced Al—Cu—Mg—Si alloy product having a high toughness and an improved fatigue crack growth resistance, and applications of that product as a structural member of an aircraft.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.