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1. WO2014167191 - METHOD FOR TRANSFORMING AL-CU-LI ALLOY SHEETS IMPROVING FORMABILITY AND CORROSION RESISTANCE

Publication Number WO/2014/167191
Publication Date 16.10.2014
International Application No. PCT/FR2014/000076
International Filing Date 07.04.2014
IPC
C22C 21/12 2006.01
CCHEMISTRY; METALLURGY
22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
CALLOYS
21Alloys based on aluminium
12with copper as the next major constituent
C22C 21/16 2006.01
CCHEMISTRY; METALLURGY
22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
CALLOYS
21Alloys based on aluminium
12with copper as the next major constituent
16with magnesium
C22F 1/057 2006.01
CCHEMISTRY; METALLURGY
22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
FCHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS OR NON-FERROUS ALLOYS
1Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working
04of aluminium or alloys based thereon
057of alloys with copper as the next major constituent
CPC
B22D 7/005
BPERFORMING OPERATIONS; TRANSPORTING
22CASTING; POWDER METALLURGY
DCASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
7Casting ingots, ; e.g. from ferrous metals
005from non-ferrous metals
C22C 21/12
CCHEMISTRY; METALLURGY
22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
CALLOYS
21Alloys based on aluminium
12with copper as the next major constituent
C22C 21/14
CCHEMISTRY; METALLURGY
22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
CALLOYS
21Alloys based on aluminium
12with copper as the next major constituent
14with silicon
C22C 21/16
CCHEMISTRY; METALLURGY
22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
CALLOYS
21Alloys based on aluminium
12with copper as the next major constituent
16with magnesium
C22C 21/18
CCHEMISTRY; METALLURGY
22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
CALLOYS
21Alloys based on aluminium
12with copper as the next major constituent
18with zinc
C22F 1/057
CCHEMISTRY; METALLURGY
22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
FCHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS AND NON-FERROUS ALLOYS
1Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working
04of aluminium or alloys based thereon
057of alloys with copper as the next major constituent
Applicants
  • CONSTELLIUM ISSOIRE [FR]/[FR]
Inventors
  • SIGLI, Christophe
  • BES, Bernard
  • EBERL, Frank
Agents
  • BUTRUILLE Jean-Rémi
Priority Data
13/0087012.04.2013FR
Publication Language French (FR)
Filing Language French (FR)
Designated States
Title
(EN) METHOD FOR TRANSFORMING AL-CU-LI ALLOY SHEETS IMPROVING FORMABILITY AND CORROSION RESISTANCE
(FR) PROCÉDÉ DE TRANSFORMATION DE TÔLES EN ALLIAGE AL-CU-LI AMÉLIORANT LA FORMABILITÉ ET LA RÉSISTANCE À LA CORROSION
Abstract
(EN)
The invention concerns the method for producing a rolled product 0.5 to 10 mm thick made from an aluminium alloy comprising, in particular, copper and lithium, in which, after solution annealing and quenching, a short heat treatment is carried out in which the sheet reaches a temperature of between 145°C and 175°C for 0.1 to 45 minutes, the speed of heating being between 3 and 600 °C/min. The sheet obtained at the end of the method according to the invention has high corrosion resistance and is capable of being shaped for producing a structural element for an aircraft, in particular an aircraft fuselage skin.
(FR)
L'invention concerne le procédé de fabrication d'un produit laminé d'épaisseur 0,5 à 10 mm en alliage base d'alliage d'aluminium comprenant notamment du cuivre et du lithium dans lequel après mise en solution et trempe on réalise un traitement thermique court dans lequel la tôle atteint une température comprise entre 145°C et 175°C pendant 0,1 à 45 minutes, la vitesse de chauffage étant comprise entre 3 et 600 °C/min. La tôle obtenue à l'issue du procédé selon l'invention présente une résistance élevée à la corrosion et est apte à être mise en forme pour la réalisation d'un élément de structure pour avion, notamment d'une peau de fuselage d'avion.
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