EP 3610048 A1 20200219 - LOW-DENSITY ALUMINIUM-COPPER-LITHIUM ALLOY PRODUCTS
Title (en)
LOW-DENSITY ALUMINIUM-COPPER-LITHIUM ALLOY PRODUCTS
Title (de)
ALUMINIUM-KUPFER-LITHIUM-LEGIERUNGSPRODUKTE MIT NIEDRIGER DICHTE
Title (fr)
PRODUITS EN ALLIAGE ALUMINIUM-CUIVRE-LITHIUM A FAIBLE DENSITE
Publication
Application
Priority
- FR 1753135 A 20170410
- FR 2018050887 W 20180409
Abstract (en)
[origin: CA3058096A1] The invention relates to a product made of an aluminium-based alloy comprising, by wt. %, Cu: 2.4-3.2; Li: 1.6-2.3; Mg: 0.3-0.9; Mn: 0.2-0.6; Zr: 0.12-0.18; such that Zr = - 0.06*Li + 0.242; Zn: < 1.0; Ag: < 0.15; Fe + Si = 0.20; optionally, at least one element selected from Ti, Sc, Cr, Hf and V, the content of the element, if selected, being: Ti: 0.01-0.1; Sc: 0.01-0.15; Cr: 0.01-0.3; Hf: 0.01-0.5; V: 0.01-0.3; other elements = 0.05 each and = 0.15 in total; the remainder being aluminium. The invention also relates to a method for manufacturing an as-cast aluminum alloy product according to the invention, comprising the following steps: preparing a liquid metal bath; casting an as-cast shape from said liquid metal bath; and solidifying the as-cast shape into a billet, a rolling plate or a forging blank; characterised in that the casting is performed without adding any grain refiner, or by adding a refiner comprising (i) Ti and (ii) B or C, such that the content of B from the refiner is less than 45 ppm, and that of C is less than 6 ppm, and/or characterised in that the casting is carried out, for an as-cast shape of thickness E or with a diameter D greater than 150 mm, at a casting rate v (mm/min) greater than 30 for a plate-type as-cast shape or 9000/D for a billet-type as-cast shape.
IPC 8 full level
C22C 21/16 (2006.01); C22C 21/18 (2006.01); C22F 1/057 (2006.01)
CPC (source: EP US)
C22C 21/16 (2013.01 - EP US); C22C 21/18 (2013.01 - EP US); C22F 1/057 (2013.01 - EP 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
Designated extension state (EPC)
BA ME
DOCDB simple family (publication)
FR 3065012 A1 20181012; FR 3065012 B1 20220318; BR 112019021001 A2 20200505; CA 3058096 A1 20181018; CN 110546288 A 20191206; EP 3610048 A1 20200219; EP 3610048 B1 20240327; US 11667997 B2 20230606; US 2020032378 A1 20200130; US 2023227954 A1 20230720; WO 2018189472 A1 20181018
DOCDB simple family (application)
FR 1753135 A 20170410; BR 112019021001 A 20180409; CA 3058096 A 20180409; CN 201880024418 A 20180409; EP 18724942 A 20180409; FR 2018050887 W 20180409; US 201816603703 A 20180409; US 202318188685 A 20230323