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(11)

EP 4 526 490 A1

(12)

(43) Date of publication: 26.03.2025 Bulletin 2025/13 (21) Application number: 23808188.9 (22) Date of filing: 16.05.2023

(51) International Patent Classification (IPC):  C22C 21/10(2006.01) C21D 8/02(2006.01) C22F 1/053(2006.01) (52) Cooperative Patent Classification (CPC): C22C 21/10; C22F 1/053 (86) International application number: PCT/US2023/022409 (87) International publication number: WO 2023/225011 (23.11.2023 Gazette 2023/47)

(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 ME MK MT NL NO PL PT RO RS SE SI SK SM TR Designated Extension States: BA Designated Validation States: KH MA MD TN (30) Priority: 17.05.2022 US 202263343074 P (71) Applicant: Arconic Technologies LLC Pittsburgh, PA 15212 (US)	(72) Inventors: CLAVES, Steven R. Murrysville, Pennsylvania 15668 (US) VENEMA, Gregory B. Le Claire, Iowa 52753 (US) WEN, Wei Allison Park, Pennsylvania 15101 (US) MACIEJEWSKI, Kimberly Latrobe, Pennsylvania 15650 (US) (74) Representative: Forresters IP LLP  Skygarden Erika-Mann-Straße 11 80636 München 80636 München (DE)