The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jan. 29, 2008
Filed:
Aug. 18, 2003
Rinze Benedictus, Delft, NL;
Christian Joachim Keidel, Montabaur, DE;
Alfred Ludwig Heinz, Niederahr, DE;
Alfred Johann Peter Haszler, Vallendar, DE;
Rinze Benedictus, Delft, NL;
Christian Joachim Keidel, Montabaur, DE;
Alfred Ludwig Heinz, Niederahr, DE;
Alfred Johann Peter Haszler, Vallendar, DE;
Aleris Aluminum Koblenz GmbH, Koblenz, DE;
Abstract
Disclosed is a high damage tolerant Al—Cu alloy of the AA2000 series having a high toughness and an improved fatigue crack growth resistance, including the following composition (in weight percent) Cu 3.8-4.7, Mg 1.0-1.6, Zr 0.06-0.18, Cr<0.15, Mn>0-0.50 , Fe≦0.15, Si≦0.15, and Mn-containing dispersoids, the balance essentially aluminum and incidental elements and impurities, wherein the Mn-containing dispersoids are at least partially replaced by Zr-containing dispersoids. There is also disclosed a method for producing a rolled high damage tolerant Al—Cu 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.