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1. (WO2019063490) AL- ZN-CU-MG ALLOYS WITH HIGH STRENGTH AND METHOD OF FABRICATION
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Pub. No.: WO/2019/063490 International Application No.: PCT/EP2018/075820
Publication Date: 04.04.2019 International Filing Date: 24.09.2018
IPC:
C22C 21/10 (2006.01) ,C22F 1/053 (2006.01)
C CHEMISTRY; METALLURGY
22
METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
C
ALLOYS
21
Alloys based on aluminium
10
with zinc as the next major constituent
C CHEMISTRY; METALLURGY
22
METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
F
CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS OR NON-FERROUS ALLOYS
1
Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working
04
of aluminium or alloys based thereon
053
of alloys with zinc as the next major constituent
Applicants:
CONSTELLIUM ISSOIRE [FR/FR]; Rue Yves Lamourdedieu ZI des Listes 63500 Issoire, FR
Inventors:
WHELCHEL, Ricky; FR
NIZERY, Erembert; FR
KOSCHEL, Diana; FR
EHRSTROM, Jean-Christophe; FR
WARNER, Timothy; FR
Agent:
C-TEC CONSTELLIUM TECHNOLOGY CENTER; CS10027 Propriété Industrielle 725, Rue Aristide Berges 38341 Voreppe, FR
Priority Data:
175891426.09.2017FR
Title (EN) AL- ZN-CU-MG ALLOYS WITH HIGH STRENGTH AND METHOD OF FABRICATION
(FR) ALLIAGES AL-ZN-CU-MG À HAUTE RÉSISTANCE ET PROCÉDÉ DE FABRICATION
Abstract:
(EN) The invention relates to a rolled product made of aluminum alloy with a thickness of at least 50 mm comprising (in weight%): Zn 6.9 - 7.5; Mg 1.8 - 2.2; Cu 1.8 - 2.2, where the sum Cu + Mg is between 3.8 and 4.2; Zr 0.04 -0.14; Mn 0 - 0.1; Ti 0 - 0.15; V 0 - 0.1; Fe ≤ 0.15; Si ≤ 0.15; impurities ≤ 0.05 each and ≤ 0.15 total, balance aluminum. The invention also relates to the method of manufacturing such a product. The products according to the invention are particularly advantageous because they have a very favorable compromise between static mechanical strength, toughness and environmental-assisted cracking performance under conditions of high stress and humid environment.
(FR) L'invention concerne un produit laminé en alliage d'aluminium d'une épaisseur d'au moins 50 mm comprenant, en % en poids : 6,9 à 7,5 de Zn; 1,8 à 2,2 de Mg; 1,8 à 2,2 de Cu, la somme Cu + Mg étant comprise entre 3,8 et 4,2; 0,04 à 0,14 de Zr; 0 à 0,1 de Mn; 0 à 0,15 de Ti; 0 à 0,1 de V; Fe ≤ 0,15; Si ≤ 0,15; des impuretés à hauteur de 0,05 ou moins chacune, et de 0,15 ou moins au total, le reste étant de l'aluminium. L'invention concerne également un procédé de fabrication dudit produit. Les produits selon l'invention sont particulièrement avantageux car ils présentent un compromis très favorable entre résistance mécanique statique, ténacité et résistance à la fissuration aggravée par l'environnement dans des conditions de contrainte élevée et d'environnement humide.
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Designated States: AE, AG, AL, AM, AO, AT, AU, AZ, BA, BB, BG, BH, BN, BR, BW, BY, BZ, CA, CH, CL, CN, CO, CR, CU, CZ, DE, DJ, DK, DM, DO, DZ, EC, EE, EG, ES, FI, GB, GD, GE, GH, GM, GT, HN, HR, HU, ID, IL, IN, IR, IS, JO, JP, KE, KG, KH, KN, KP, KR, KW, KZ, LA, LC, LK, LR, LS, LU, LY, MA, MD, ME, MG, MK, MN, MW, MX, MY, MZ, NA, NG, NI, NO, NZ, OM, PA, PE, PG, PH, PL, PT, QA, RO, RS, RU, RW, SA, SC, SD, SE, SG, SK, SL, SM, ST, SV, SY, TH, TJ, TM, TN, TR, TT, TZ, UA, UG, US, UZ, VC, VN, ZA, ZM, ZW
African Regional Intellectual Property Organization (ARIPO) (BW, GH, GM, KE, LR, LS, MW, MZ, NA, RW, SD, SL, ST, SZ, TZ, UG, ZM, ZW)
Eurasian Patent Office (AM, AZ, BY, KG, KZ, RU, TJ, TM)
European Patent Office (EPO) (AL, AT, BE, BG, CH, CY, CZ, DE, DK, EE, ES, FI, FR, GB, GR, HR, HU, IE, IS, IT, LT, LU, LV, MC, MK, MT, NL, NO, PL, PT, RO, RS, SE, SI, SK, SM, TR)
African Intellectual Property Organization (BF, BJ, CF, CG, CI, CM, GA, GN, GQ, GW, KM, ML, MR, NE, SN, TD, TG)
Publication Language: English (EN)
Filing Language: English (EN)