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EP 3 676 412 A1

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(43) Date of publication: 08.07.2020 Bulletin 2020/28 (21) Application number: 18766496.6 (22) Date of filing: 28.08.2018

(51) International Patent Classification (IPC):  C22F 1/047(2006.01) B21B 3/00(2006.01) C22F 1/053(2006.01) B22D 11/00(2006.01) C22C 21/08(2006.01) (86) International application number: PCT/US2018/048305 (87) International publication number: WO 2019/046275 (07.03.2019 Gazette 2019/10)

(84) Designated Contracting States: 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 States: BA ME Designated Validation States: KH MA MD TN (30) Priority: 29.08.2017 US 201762551497 P (71) Applicants: Novelis Inc. Atlanta, GA 30326 (US) Talla, Rajasekhar Woodstock, Georgia 30188 (US) Kamat, Rajeev G. Marietta, Georgia 30062 (US)

(72) Inventors: TALLA, Rajasekhar Woodstock, Georgia 30188 (US) KAMAT, Rajeev G. Marietta, Georgia 30062 (US) LEYVRAZ, David 3960 Sierre (CH) WAGSTAFF, Samuel Robert Marietta, Georgia 30066 (US) CLERC, Steve 3960 Sierre (CH) (74) Representative: Weickmann & Weickmann PartmbB  Postfach 860 820 81635 München 81635 München (DE)