(19)

(11)

EP 3 519 601 A2

(12)

(88) Date of publication A3: 16.08.2018 (43) Date of publication: 07.08.2019 Bulletin 2019/32 (21) Application number: 17874461.1 (22) Date of filing: 29.09.2017

(51) International Patent Classification (IPC):  C22C 30/00(2006.01) C22C 38/40(2006.01) C22C 19/05(2006.01) (86) International application number: PCT/US2017/054559 (87) International publication number: WO 2018/097901 (31.05.2018 Gazette 2018/22)

(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: MA MD (30) Priority: 30.09.2016 US 201662402409 P 21.06.2017 US 201762523101 P (71) Applicant: Arconic Inc. Pittsburgh, PA 15212-5858 (US)

(72) Inventors: TANG, Zhi Pittsburgh, Pennsylvania 15221 (US) KARABIN, Lynette M. Ruffs Dale, Pennsylvania 15679 (US) GU, Yijia Pittsburgh, Pennsylvania 15238 (US) YANAR, Cagatay Pittsburgh, Pennsylvania 15238 (US) WANG, Wei State College, Pennsylvania 16801 (US) NGUYEN-DINH, Xuan Monroeville, Pennsylvania 15146 (US) SAUZA, Daniel J. Pittsburgh, Pennsylvania 15237 (US) (74) Representative: Barton, Matthew Thomas  Forresters IP LLP Skygarden Erika-Mann-Strasse 11 80636 München 80636 München (DE)