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    ligas de lítio de alumínio da série 2xxx
    22.
    发明专利
    ligas de lítio de alumínio da série 2xxx 未知

    公开(公告)号：BR112013020682A2

    公开(公告)日：2016-10-25

    申请号：BR112013020682

    申请日：2012-02-17

    Applicant: ALCOA INC

    Inventor： VENEMA GREGORY B ,  BOSELLI JULIEN ,  SAWTELL RALPH R ,  RIOJA ROBERTO J

    IPC: C22C21/00 ,  C22C21/12

    Abstract: resumo patente de invenção: "ligas de lítio de alumínio da série 2xxx". a presente invenção refere-se aos produtos de liga de lítio de alumínio grosso forjado 2xxx. os produtos de liga de alumínio forjado tem uma espessura de, pelo menos, 12,7 mm e contém de 3,00 a 3,80% em peso de cu, 0,05 a 0,35% em peso de mg, 0,975 a 1,385% em peso de li, em que -0.3 * mg-li 0.15cu + 1,65 = = -0.3 * mg-0.15cu + 1,85, 0,05 a 0,50% em peso de pelo menos um elemento de controle de estrutura de grãos, em que o elemento de controle de estrutura de grão é selecionado a partir do grupo que consiste em zr, sc, cr, v, hf, outros metais de terras raras e as combinações dos mesmos, de até 1,0% em peso zn até 1,0% em peso mn, até 0,12% em peso si, até 0,15% em peso de fe, até 0,15% em peso ti, até 0,10% em peso de qualquer outro elemento, com o total de estes elementos não superior a 0,35% em peso, sendo o restante de alumínio.

    ALUMINUM ALLOY PRODUCTS AND ARTIFICIAL AGING METHOD
    24.
    发明专利
    ALUMINUM ALLOY PRODUCTS AND ARTIFICIAL AGING METHOD 未知

    公开(公告)号：CA2432089C

    公开(公告)日：2013-04-30

    申请号：CA2432089

    申请日：2001-10-04

    Applicant: ALCOA INC

    Inventor： CHAKRABARTI DHRUBA J ,  LIU JOHN ,  GOODMAN JAY H ,  VENEMA GREGORY B ,  SAWTELL RALPH R ,  KRIST CYNTHIA M ,  WESTERLUND ROBERT W

    IPC: C22C21/10 ,  C22F1/00 ,  C22F1/053

    Abstract: Alluminum 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.

    2XXX SERIES ALUMINUM LITHIUM ALLOYS
    25.
    发明专利
    2XXX SERIES ALUMINUM LITHIUM ALLOYS 未知

    公开(公告)号：CA2827530A1

    公开(公告)日：2012-08-23

    申请号：CA2827530

    申请日：2012-02-17

    Applicant: ALCOA INC

    Inventor： BOSELLI JULIEN ,  RIOJA ROBERTO J ,  VENEMA GREGORY B ,  SAWTELL RALPH R

    IPC: C22C21/00 ,  C22C21/12

    Abstract: Thick wrought 2xxx aluminum lithium alloy products are disclosed. The wrought aluminum alloy products have a thickness of at least 12.7 mm and contain from 3.00 to 3.80 wt. % Cu, from 0.05 to 0.35 wt. % Mg, from 0.975 to 1.385 wt. % Li, wherein -0.3*Mg-0.15Cu +1.65 = Li = -0.3*Mg-0.15Cu +1.85, from 0.05 to 0.50 wt. % of at least one grain structure control element, wherein the grain structure control element is selected from the group consisting of Zr, Sc, Cr, V, Hf, other rare earth elements, and combinations thereof, up to 1.0 wt. % Zn, up to 1.0 wt. % Mn, up to 0.12 wt. % Si, up to 0.15 wt. % Fe, up to 0.15 wt. % Ti, up to 0.10 wt. % of any other element, with the total of these other elements not exceeding 0.35 wt. %, the balance being aluminum.

    ALUMINUM ALLOY PRODUCTS AND ARTIFICIAL AGING METHOD
    27.
    发明专利
    ALUMINUM ALLOY PRODUCTS AND ARTIFICIAL AGING METHOD 未知

    公开(公告)号：CA2432089A1

    公开(公告)日：2002-07-04

    申请号：CA2432089

    申请日：2001-10-04

    Applicant: ALCOA INC

    Inventor： WESTERLUND ROBERT W ,  VENEMA GREGORY B ,  GOODMAN JAY H ,  KRIST CYNTHIA M ,  SAWTELL RALPH R ,  CHAKRABARTI DHRUBA J ,  LIU JOHN

    IPC: C22C21/10 ,  C22F1/00 ,  C22F1/053

    Abstract: Alluminum alloy products, such as plate, forgings and extrusions, suitable f or 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.

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