EP 3080318 B2 20230913 - METHOD FOR MANUFACTURING PRODUCTS MADE OF ALUMINIUM-COPPER-LITHIUM ALLOY WITH IMPROVED FATIGUE PROPERTIES AND DISTRIBUTOR FOR THIS METHOD
Title (en)
METHOD FOR MANUFACTURING PRODUCTS MADE OF ALUMINIUM-COPPER-LITHIUM ALLOY WITH IMPROVED FATIGUE PROPERTIES AND DISTRIBUTOR FOR THIS METHOD
Title (de)
VERFAHREN ZUR HERSTELLUNG VON PRODUKTEN AUS EINER ALUMINIUM-KUPFER-LITHIUM-LEGIERUNG MIT VERBESSERTEN ERMÜDUNGSEIGENSCHAFTEN UND VERTEILER FÜR DIESES VERFAHREN
Title (fr)
PROCEDE DE FABRICATION DE PRODUITS EN ALLIAGE D'ALUMINIUM - CUIVRE - LITHIUM A PROPRIETES EN FATIGUE AMELIOREES ET DISTRIBUTEUER POUR CE PROCEDE
Publication
Application
Priority
- FR 1302932 A 20131213
- FR 2014000273 W 20141211
Abstract (en)
[origin: WO2015086921A2] The invention relates to a metal sheet with a thickness of at least 80 mm made of an aluminium alloy including, as weight percentages: Cu: 2.0 - 6.0; Li: 0.5 - 2.0; Mg: 0 - 1.0; Ag: 0 - 0.7; Zn 0 - 1.0; and at least one element selected among Zr, Mn, Cr, Se, Hf and Ti, the amount of said element, if chosen, being 0.05 to 0.20 wt % for Zr, 0.05 to 0.8 wt % for Mn, 0.05 to 0.3 wt % for Cr and for Se, 0.05 to 0.5 wt % for Hf and 0.01 to 0.15 wt % for Ti, Si ≤ 0.1; Fe ≤ 0.1; others ≤ 0.05 each and ≤ 0.15 in total, characterised in that in the tempered state the logarithmic mean of the fatigue thereof, as measured at mid-thickness in the TL direction on smooth test pieces with a maximum amplitude constraint of 242 MPa, a frequency of 50 Hz and a stress ratio of R = 0.1, is at least 250,000 cycles. The product according to the invention is obtained by a method which, in particular, has specific casting conditions. The use of a metal sheet according to an invention is advantageous for manufacturing an aeroplane structural element, preferably a spar, ribs or a frame.
IPC 8 full level
C22C 21/12 (2006.01); B22D 11/00 (2006.01); B22D 11/04 (2006.01); B22D 11/041 (2006.01); B22D 11/059 (2006.01); B22D 11/119 (2006.01); B22D 21/00 (2006.01); B22D 43/00 (2006.01); C22C 1/02 (2006.01); C22C 21/14 (2006.01); C22C 21/16 (2006.01); C22C 21/18 (2006.01); C22F 1/04 (2006.01); C22F 1/057 (2006.01)
CPC (source: CN EP RU US)
B21B 1/22 (2013.01 - US); B21C 23/212 (2013.01 - US); B21J 5/00 (2013.01 - US); B22D 11/003 (2013.01 - EP US); B22D 11/0408 (2013.01 - EP US); B22D 11/041 (2013.01 - EP RU US); B22D 11/059 (2013.01 - EP US); B22D 11/103 (2013.01 - CN); B22D 11/119 (2013.01 - CN); B22D 21/007 (2013.01 - EP US); B22D 21/04 (2013.01 - RU); C22C 1/02 (2013.01 - RU); C22C 1/026 (2013.01 - EP US); C22C 21/12 (2013.01 - CN EP RU US); C22C 21/14 (2013.01 - CN EP US); C22C 21/16 (2013.01 - CN EP US); C22C 21/18 (2013.01 - CN EP US); C22F 1/002 (2013.01 - CN); C22F 1/057 (2013.01 - CN EP RU US); B21B 2003/001 (2013.01 - US)
Citation (opposition)
Opponent :
- FR 2757422 A1 19980626 - STEVTISS [FR]
- US 5207974 A 19930504 - YUN DAVID I [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 2015086921 A2 20150618; WO 2015086921 A3 20150820; BR 112016012288 A8 20200505; BR 112016012288 B1 20210504; CA 2932989 A1 20150618; CA 2932989 C 20211026; CA 2932991 A1 20150618; CA 2932991 C 20211026; CN 105814222 A 20160727; CN 105814222 B 20190723; CN 106170573 A 20161130; CN 106170573 B 20181221; DE 14825363 T1 20170112; DE 14828176 T1 20170105; EP 3080317 A2 20161019; EP 3080317 B1 20180919; EP 3080318 A2 20161019; EP 3080318 B1 20181024; EP 3080318 B2 20230913; FR 3014905 A1 20150619; FR 3014905 B1 20151211; JP 2017505378 A 20170216; JP 2017507240 A 20170316; JP 6604949 B2 20191113; JP 6683611 B2 20200422; RU 2674789 C1 20181213; RU 2674790 C1 20181213; US 10415129 B2 20190917; US 10689739 B2 20200623; US 2016237532 A1 20160818; US 2016355916 A1 20161208; WO 2015086922 A2 20150618; WO 2015086922 A3 20150827
DOCDB simple family (application)
FR 2014000271 W 20141211; BR 112016012288 A 20141211; CA 2932989 A 20141211; CA 2932991 A 20141211; CN 201480067888 A 20141211; CN 201480068349 A 20141211; DE 14825363 T 20141211; DE 14828176 T 20141211; EP 14825363 A 20141211; EP 14828176 A 20141211; FR 1302932 A 20131213; FR 2014000273 W 20141211; JP 2016538512 A 20141211; JP 2016538701 A 20141211; RU 2016127921 A 20141211; RU 2016128047 A 20141211; US 201414566810 A 20141211; US 201415102965 A 20141211