(19)
(11) EP 3 388 540 B8

(12) CORRECTED EUROPEAN PATENT SPECIFICATION
Note: Bibliography reflects the latest situation

(15) Correction information:
Corrected version no 1 (W1 B1)

(48) Corrigendum issued on:
19.04.2023 Bulletin 2023/16

(45) Mention of the grant of the patent:
15.03.2023 Bulletin 2023/11

(21) Application number: 18165961.6

(22) Date of filing: 05.04.2018
(51) International Patent Classification (IPC): 
C22C 21/12(2006.01)
C22F 1/057(2006.01)
 C22C 21/16(2006.01)
(52) Cooperative Patent Classification (CPC):
C22C 21/12; C22F 1/057; C22C 21/18; B22D 7/005; C22C 21/16; C22C 21/14

(54)

ALUMINUM ALLOY WITH ADDITIONS OF COPPER, LITHIUM, SILVER AND AT LEAST ONE OF SR OR A RARE EARTH METAL, AND METHOD OF MANUFACTURING THE SAME

ALUMINIUMLEGIERUNG MIT ZUSÄTZEN VON KUPFER, LITHIUM, SILBER UND MINDESTENS SR- ODER SELTENERDMETALL UND VERFAHREN ZUR HERSTELLUNG DAVON

ALLIAGE D'ALUMINIUM AVEC ADDITIONS DE CUIVRE, DE LITHIUM, D'ARGENT ET D'AU MOINS STRONTIUM OU UN MÉTAL DE TERRE RARE ET SON PROCÉDÉ DE FABRICATION

(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

(30) Priority: 11.04.2017 US 201715484288

(43) Date of publication of application:
17.10.2018 Bulletin 2018/42

(73) Proprietor: The Boeing Company
Arlington, VA 22202 (US)

(72) Inventors:
  • MANN, Austin E.
    Huntington Beach, CA California 92647 (US)
  • BAKER, Andrew H.
    Huntington Beach, CA California 92647 (US)
  • MISHRA, Rajiv
    Huntington Beach, CA California 92647 (US)
  • PALANIVEL, Sivanesh
    Huntington Beach, CA California 92647 (US)

(74) Representative: Harris, Jennifer Lucy et al
Kilburn & Strode LLP Lacon London 84 Theobalds Road
London WC1X 8NL
London WC1X 8NL (GB)


(56) References cited: : 
WO-A2-02/10466
 SU-A1- 1 785 286
   
  • YUAN G S ET AL: "Structure and mechanical properties of rapidly solidified Al@?Li@?Cu@?Mg alloys containing minor zirconium and rare earths", MATERIALS SCIENCE AND ENGINEERING: A, ELSEVIER, AMSTERDAM, NL, vol. 134, 25 March 1991 (1991-03-25), pages 1179-1181, XP024342953, ISSN: 0921-5093, DOI: 10.1016/0921-5093(91)90950-R [retrieved on 1991-03-25]
  • ZHENG Z Q ET AL: "THE MICROSTURCTURE AND FRACTURE TOUGHNESS OF AN AL-LI-CU-MG-ZR ALLOSY CONTAINING MINOR LANTHANUM ADDITIONS", JOURNAL OF MATERIALS SCIENCE LETTERS, CHAPMAN AND HALL LTD. LONDON, GB, vol. 13, no. 13, 1 July 1994 (1994-07-01), pages 946-949, XP000454041, ISSN: 0261-8028, DOI: 10.1007/BF00701433
  • XINXIANG YU ET AL: "Microstructure Evolution of Novel Al-Cu-Li-Ce Alloys during Homogenization", RARE METAL MATERIALS AND ENGINEERING, vol. 45, no. 7, 1 July 2016 (2016-07-01), pages 1687-1694, XP029817292, ISSN: 1875-5372, DOI: 10.1016/S1875-5372(16)30141-2
  • XINXIANG YU ET AL: "Effects of Cerium and Zirconium Microalloying Addition on the Microstructures and Tensile Properties of Novel Al-Cu-Li Alloys", RARE METAL MATERIALS AND ENGINEERING, vol. 45, no. 8, 1 August 2016 (2016-08-01) , pages 1917-1923, XP029822090, ISSN: 1875-5372, DOI: 10.1016/S1875-5372(16)30147-3
  • XINXIANG YU ET AL: "Effects of Cerium Addition on Solidification Behaviour and Intermetallic Structure of Novel Al-Cu-Li Alloys", RARE METAL MATERIALS AND ENGINEERING, vol. 45, no. 6, 1 June 2016 (2016-06-01), pages 1423-1429, XP029733073, ISSN: 1875-5372, DOI: 10.1016/S1875-5372(16)30125-4
  • Wa Alloys: "International Alloy Designations and Chemical Composition Limits for Wrought Aluminum and Wrought Aluminum Alloys", The Aluminum Association - Teal Sheet, 1 August 2018 (2018-08-01), XP055842354, Retrieved from the Internet: URL:https://www.aluminum.org/sites/default /files/Teal%20Sheet.pdf [retrieved on 2021-09-20]
   
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