EP 2364378 B1 20140108 - PRODUCTS IN ALUMINIUM-COPPER-LITHIUM ALLOY
Title (en)
PRODUCTS IN ALUMINIUM-COPPER-LITHIUM ALLOY
Title (de)
PRODUKTE AUS ALUMINIUM-KUPFER-LITHIUM-LEGIERUNG
Title (fr)
PRODUITS EN ALLIAGE ALUMINIUM-CUIVRE-LITHIUM
Publication
Application
Priority
- FR 2009001299 W 20091110
- FR 0806339 A 20081114
- US 11449308 P 20081114
Abstract (en)
[origin: WO2010055225A1] The invention relates to a process for manufacturing an extruded, rolled and/or forged product based on an aluminium alloy in which: a bath of liquid metal is produced that comprises 2.0 to 3.5 wt% Cu, 1.4 to 1.8 wt% Li, 0.1 to 0.5 wt% Ag, 0.1 to 1.0 wt% Mg, 0.05 to 0.18 wt% Zr, 0.2 to 0.6 wt% Mn and at least one element chosen from Cr, Sc, Hf and Ti, the amount of said element, if it is chosen, being 0.05 to 0.3 wt% in the case of Cr and Sc, 0.05 to 0.5 wt% in the case of Hf and 0.01 to 0.15 wt% in the case of Ti, the balance being aluminium and inevitable impurities; an unwrought product is cast from the liquid metal bath and said unwrought product is homogenized at a temperature between 515°C and 525°C so that the time equivalent to 520°C for the homogenization is between 5 and 20 hours. The products obtained by the process according to the invention represent a particularly advantageous compromise between static mechanical strength and damage tolerance and are useful in particular in the aeronautical construction field.
IPC 8 full level
C22C 21/00 (2006.01); C22C 21/16 (2006.01); C22F 1/04 (2006.01); C22F 1/057 (2006.01)
CPC (source: EP US)
C22C 21/00 (2013.01 - EP US); C22C 21/16 (2013.01 - EP US); C22F 1/04 (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 MK MT NL NO PL PT RO SE SI SK SM TR
DOCDB simple family (publication)
WO 2010055225 A1 20100520; BR PI0921819 A2 20180214; BR PI0921819 B1 20220517; CA 2743353 A1 20100520; CA 2743353 C 20170411; CN 102224267 A 20111019; CN 102224267 B 20130925; DE 09764268 T1 20111201; EP 2364378 A1 20110914; EP 2364378 B1 20140108; ES 2457221 T3 20140425; FR 2938553 A1 20100521; FR 2938553 B1 20101231; US 10190200 B2 20190129; US 2010126637 A1 20100527; US 2013255839 A1 20131003; US 2019136356 A1 20190509; US 8366839 B2 20130205
DOCDB simple family (application)
FR 2009001299 W 20091110; BR PI0921819 A 20091110; CA 2743353 A 20091110; CN 200980145724 A 20091110; DE 09764268 T 20091110; EP 09764268 A 20091110; ES 09764268 T 20091110; FR 0806339 A 20081114; US 201313733720 A 20130103; US 201816213328 A 20181207; US 61780309 A 20091113