-
公开(公告)号:ES2579780T3
公开(公告)日:2016-08-16
申请号:ES08825939
申请日:2008-05-14
Applicant: ALCOA INC
Inventor: BRAY GARY , CHAKRABARTI DHRUBA , DENZER DIANA , LIN JEN , NEWMAN JOHN , VENEMA GREGORY , YANAR CAGATAY , BOSELLI JULIEN
Abstract: Una chapa de aleación de aluminio que tiene un espesor de 51,1 mm (2,01 pulgadas) a 101,6 mm (4 pulgadas), en donde la chapa de aleación de aluminio consiste en: 7,5 - 7,9% en peso de Zn; 2,05 - 2,20% en peso de Cu; 1,6 - 1,75% en peso de Mg; opcionalmente, hasta 0,25% en peso de al menos un elemento de Zr, Hf, Sc, Mn y V; siendo el resto aluminio e impurezas.
-
公开(公告)号:AT555223T
公开(公告)日:2012-05-15
申请号:AT01977394
申请日:2001-10-04
Applicant: ALCOA INC
Inventor: CHAKRABARTI DHRUBA , LIU JOHN , GOODMAN JAY , VENEMA GREGORY , SAWTELL RALPH , KRIST CYNTHIA , WESTERLUND ROBERT
Abstract: Aluminum alloy products, such as plate, forgings and extrusions, suitable for use in making aerospace structural components like integral wing spars, ribs and webs, comprises about: 6 to 10 wt. % Zn; 1.2 to 1.9 wt. % Mg; 1.2 to 2.2 wt. % Cu, with Mg (Cu + 0.3); and 0.05 to 0.4 wt. % Zr, the balance Al, incidental elements and impurities. Preferably, the alloy contains about 6.9 to 8.5 wt. % Zn; 1.2 to 1.7 wt. % Mg; 1.3 to 2 wt. % Cu. This alloy provides improved combinations of strength and fracture toughness in thick gauges. When artificially aged per the three stage method of preferred embodiments, this alloy also achieves superior SCC performance, including under seacoast conditions.
-