EP 2235224 B1 20170222 - MANUFACTURING METHOD OF AN Al-Li ROLLED PRODUCT FOR AERONAUTICAL APPLICATIONS
Title (en)
MANUFACTURING METHOD OF AN Al-Li ROLLED PRODUCT FOR AERONAUTICAL APPLICATIONS
Title (de)
HERSTELLUNGSVERFAHREN EINES Al-Li-GEWALZTEN PRODUKTS FÜR ANWENDUNGEN IN DER LUFTFAHRT
Title (fr)
PROCÉDÉ DE FABRICATION D'UN PRODUIT LAMINÉ EN Al-Li POUR DES APPLICATIONS AÉRONAUTIQUES
Publication
Application
Priority
- FR 2008001787 W 20081219
- FR 0709069 A 20071221
- US 2003808 P 20080109
Abstract (en)
[origin: US2009159159A1] The present invention is directed to a substantially unrecrystallized rolled aluminum alloy product, obtained from a plate with a thickness of at least 30 mm, comprising 2.2 to 3.9 wt. % Cu, 0.7 to 2.1 wt. % Li, 0.2 to 0.8 wt. % Mg, 0.2 to 0.5 wt. % Mn, 0.04 to 0.18 wt. % Zr, less than 0.05 wt. % Zn, and optionally 0.1 to 0.5 wt. % Ag, remainder aluminum and unavoidable impurities having a low propensity to crack branching during L-S a fatigue test. A product of the invention has a crack deviation angle Theta of at least 20° under a maximum equivalent stress intensity factor Keff max of 10 MPa √m for a S-L cracked test sample under a mixed mode I and mode II loading wherein the angle Psi between a plane perpendicular to the initial crack direction and the load direction is 75°
IPC 8 full level
C22C 21/12 (2006.01); C22F 1/057 (2006.01)
CPC (source: EP US)
C22C 21/12 (2013.01 - EP US); C22C 21/16 (2013.01 - EP US); C22F 1/057 (2013.01 - EP US)
Designated contracting state (EPC)
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MT NL NO PL PT RO SE SI SK TR
DOCDB simple family (publication)
US 2009159159 A1 20090625; BR PI0821569 A2 20150908; BR PI0821569 A8 20170711; BR PI0821569 A8 20170822; BR PI0821569 B1 20180626; CA 2708989 A1 20090827; CA 2708989 C 20170418; CN 101903546 A 20101201; CN 101903546 B 20130102; DE 08872581 T1 20110120; EP 2235224 A1 20101006; EP 2235224 B1 20170222; FR 2925523 A1 20090626; FR 2925523 B1 20100521; US 2010314007 A1 20101216; US 8323426 B2 20121204; WO 2009103899 A1 20090827
DOCDB simple family (application)
US 33961108 A 20081219; BR PI0821569 A 20081219; CA 2708989 A 20081219; CN 200880122247 A 20081219; DE 08872581 T 20081219; EP 08872581 A 20081219; FR 0709069 A 20071221; FR 2008001787 W 20081219; US 75278610 A 20100401