EP 3788178 B1 20220817 - ALUMINIUM-COPPER-LITHIUM ALLOY HAVING IMPROVED COMPRESSIVE STRENGTH AND IMPROVED TOUGHNESS
Title (en)
ALUMINIUM-COPPER-LITHIUM ALLOY HAVING IMPROVED COMPRESSIVE STRENGTH AND IMPROVED TOUGHNESS
Title (de)
ALUMINIUM-KUPFER-LITHIUM-LEGIERUNG MIT VERBESSERTER KOMPRESSIONSFESTIGKEIT UND ERHÖHTER BESTÄNDIGKEIT
Title (fr)
ALLIAGE ALUMINIUM CUIVRE LITHIUM A RESISTANCE EN COMPRESSION ET TENACITE AMELIOREES
Publication
Application
Priority
- FR 1853798 A 20180502
- FR 2019050965 W 20190424
Abstract (en)
[origin: WO2019211547A1] The invention relates to a product based on an aluminium alloy comprising, as percentages by weight, 4.0 to 4.6% by weight of Cu, 0.7 to 1.2% by weight of Li, 0.5 to 0.65% by weight of Mg, 0.10 to 0.20% by weight of Zr, 0.15 to 0.30% by weight of Ag, 0.25 to 0.45% by weight of Zn, 0.05 to 0.35% by weight of Mn, at most 0.20% by weight of Fe + Si, at least one element selected from Cr, Sc, Hf, V and Ti, the amount of said element, if selected, being from 0.05 to 0.3% by weight for Cr and for Sc, 0.05 to 0.5% by weight for Hf and for V and 0.01 to 0.15% by weight for Ti, the other elements being at most 0.05% by weight each and 0.15% by weight in total, the remainder being aluminium. The invention also relates to a method for obtaining such a product and to the use thereof as an aircraft structural element.
IPC 8 full level
C22C 21/12 (2006.01); C22C 21/16 (2006.01); C22C 21/18 (2006.01); C22F 1/057 (2006.01)
CPC (source: EP US)
C22C 21/12 (2013.01 - EP); C22C 21/14 (2013.01 - US); C22C 21/16 (2013.01 - EP US); C22C 21/18 (2013.01 - EP US); C22F 1/057 (2013.01 - EP US)
Citation (opposition)
Opponent : Arconic Corporation
- US 2012152415 A1 20120621 - DANIELOU ARMELLE [FR], et al
- CN 103509984 A 20140115 - UNIV CENTRAL SOUTH, et al
- WO 2013169901 A1 20131114 - ALCOA INC [US]
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
DOCDB simple family (publication)
WO 2019211547 A1 20191107; BR 112020021796 A2 20210323; BR 112020021796 B1 20240109; CA 3096776 A1 20191107; CN 112041473 A 20201204; EP 3788178 A1 20210310; EP 3788178 B1 20220817; FR 3080860 A1 20191108; FR 3080860 B1 20200417; US 2021310108 A1 20211007
DOCDB simple family (application)
FR 2019050965 W 20190424; BR 112020021796 A 20190424; CA 3096776 A 20190424; CN 201980029413 A 20190424; EP 19726060 A 20190424; FR 1853798 A 20180502; US 201917051659 A 20190424