EP 3788179 A1 20210310 - METHOD FOR MANUFACTURING AN ALUMINUM-COPPER-LITHIUM ALLOY WITH IMPROVED COMPRESSIVE STRENGTH AND IMPROVED TOUGHNESS
Title (en)
METHOD FOR MANUFACTURING AN ALUMINUM-COPPER-LITHIUM ALLOY WITH IMPROVED COMPRESSIVE STRENGTH AND IMPROVED TOUGHNESS
Title (de)
VERFAHREN ZUR HERSTELLUNG EINER ALUMINIUM-KUPFER-LITHIUM-LEGIERUNG MIT VERBESSERTER DRUCKFESTIGKEIT UND VERBESSERTER ZÄHIGKEIT
Title (fr)
PROCEDE DE FABRICATION D'UN ALLIAGE ALUMINIUM CUIVRE LITHIUM A RESISTANCE EN COMPRESSION ET TENACITE AMELIOREES
Publication
Application
Priority
- FR 1853799 A 20180502
- FR 2019050964 W 20190424
Abstract (en)
[origin: WO2019211546A1] The invention relates to a manufacturing method in which an alloy is prepared that comprises 3.5 to 4.7 wt% of Cu; 0.6 to 1.2 wt% of Li; 0.2 to 0.8 wt% of Mg; 0.1 to 0.2 wt% of Zr; 0.0 to 0.3 wt% of Ag; 0.0 to 0.8 wt% of Zn; 0.0 to 0.5 wt% of Mn; at most 0.20 wt% of Fe + Si; optionally an element selected from Cr, Sc, Hf and V, the amount of said element, if selected, being from 0.05 to 0.3 wt% for Cr and for Sc, 0.05 to 0.5 wt% for Hf and for V; the other elements being at most 0.05 wt% each and 0.15 wt% in total, a refiner is introduced, the alloy is cast in a crude form, homogenized, hot-worked, solution heat-treated, quenched, cold-worked, and tempered, in which the refiner contains particles of TiC and/or the cold working is between 8 and 16%. The products obtained by the method according to the invention have an advantageous compromise between mechanical strength and toughness.
IPC 8 full level
C22C 21/16 (2006.01); C22C 21/18 (2006.01); C22F 1/057 (2006.01)
CPC (source: EP US)
B21B 3/00 (2013.01 - US); 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); B21B 2003/001 (2013.01 - US)
Citation (search report)
See references of WO 2019211546A1
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
Designated extension state (EPC)
BA ME
DOCDB simple family (publication)
WO 2019211546 A1 20191107; CA 3098916 A1 20191107; CN 112105752 A 20201218; CN 112105752 B 20220705; EP 3788179 A1 20210310; FR 3080861 A1 20191108; FR 3080861 B1 20210319; US 2021189538 A1 20210624
DOCDB simple family (application)
FR 2019050964 W 20190424; CA 3098916 A 20190424; CN 201980029564 A 20190424; EP 19726469 A 20190424; FR 1853799 A 20180502; US 201917051672 A 20190424