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    SECONDARY CAST ALUMINUM ALLOY FOR STRUCTURAL APPLICATIONS
    131.
    发明申请
    SECONDARY CAST ALUMINUM ALLOY FOR STRUCTURAL APPLICATIONS 审中-公开

    公开(公告)号：US20190039125A1

    公开(公告)日：2019-02-07

    申请号：US16154129

    申请日：2018-10-08

    Applicant: GM Global Technology Operations LLC

    Inventor： Qigui Wang ,  Jason R. Traub ,  Michael J. Walker ,  Anil K. Sachdev

    IPC: B22D21/00 ,  C22C21/12 ,  C22F1/057 ,  C22F1/043 ,  C22C21/18 ,  G01N33/20 ,  B22D25/02 ,  C22C21/02 ,  C22C21/16

    Abstract: An aluminum alloy that can be cast into structural components wherein at least some of the raw materials used to produce the alloy are sourced from secondary production sources. In addition to aluminum as the primary constituent, such an alloy includes 5 to 14% silicon, 0 to 1.5% copper, 0.2 to 0.55% magnesium, 0.2 to 1.2% iron, 0.1 to 0.6% manganese, 0 to 0.5% nickel, 0 to 0.8% zinc, 0 to 0.2% of other trace elements selected from the group consisting essentially of titanium, zirconium, vanadium, molybdenum and cobalt. In a preferred form, most of the aluminum is from a secondary production source. Methods of analyzing a secondary production aluminum alloy to determine its constituent makeup is also disclosed, as is a method of adjusting the constituent makeup of such an alloy in situations where the alloy is out of tolerance when measured against its primary source counterpart.

    Mass efficient piston
    133.
    发明授权
    Mass efficient piston 有权

    公开(公告)号：US10151269B2

    公开(公告)日：2018-12-11

    申请号：US15184434

    申请日：2016-06-16

    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

    Inventor： Tyson W. Brown ,  Anil K. Sachdev ,  Alin C. Dragoiu ,  Vincent V. Tiaga

    IPC: F16J1/04 ,  F02F3/22 ,  F16J1/00 ,  F16J9/00 ,  F16J1/16 ,  F02F3/00

    Abstract: An integrally formed piston has a crown portion having an upper crown surface and an undercrown surface. A ring belt extends from the undercrown surface at a periphery thereof. The ring belt includes an uppermost ring land and at least one oil galley contoured to extend around at least two surfaces of the uppermost ring land. The oil galley has an opening at the undercrown surface for receiving a cooling fluid therein for cooling the uppermost ring land. A skirt extends from the undercrown surface and the ring belt and has a plurality of stiffening features arranged in a truss formation. At least one of the plurality of stiffening features has an I-beam cross-section and another of the plurality of stiffening features has a negative draft angle.

    RAPIDLY SOLIDIFIED HIGH-TEMPERATURE ALUMINUM IRON SILICON ALLOYS
    136.
    发明申请
    RAPIDLY SOLIDIFIED HIGH-TEMPERATURE ALUMINUM IRON SILICON ALLOYS 审中-公开

    公开(公告)号：US20170211168A1

    公开(公告)日：2017-07-27

    申请号：US15384889

    申请日：2016-12-20

    Applicant: GM Global Technology Operations LLC

    Inventor： Zhongyi Liu ,  Anil K. Sachdev

    IPC: C22C45/08 ,  C22C1/00

    CPC classification number: C22C45/08 ,  C22C1/002

    Abstract: Methods of making high-strength, lightweight alloy components capable of high temperature performance comprising aluminum, silicon, and iron and/or nickel are provided. A high-energy stream, such as a laser or electron beam, may be selectively directed towards a precursor material to melt a portion of the precursor material in a localized region. The molten precursor material is cooled at a rate of greater than or equal to about 1.0×105 K/second to form a solid high-strength, lightweight alloy component comprising a stable ternary cubic phase having high heat resistance and high strength. The stable ternary phase may be AlxFeySiz, where x ranges from about 4 to about 5 or about 7.2 to about 7.6, y is about 1.5 to about 2.2, and z is about 1. The stable ternary phase may also be Al6Ni3Si. Materials and components, such as automotive components, made from such methods are also provided.

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