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    Aluminum alloy and method of manufacturing
    14.
    发明授权
    Aluminum alloy and method of manufacturing 有权

    公开(公告)号：US10801095B2

    公开(公告)日：2020-10-13

    申请号：US15867146

    申请日：2018-01-10

    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

    Inventor： Henry Zhan ,  Bin Hu

    IPC: C22C21/02 ,  C22F1/043 ,  C22C21/04

    Abstract: An aluminum alloy for casting shaped aluminum alloy parts may comprise alloying elements of silicon and chromium and may be formulated to develop a dispersion strengthened and precipitation strengthened microstructure via heat treatment. The aluminum alloy may be formulated to develop a microstructure including an aluminum matrix phase and a fine-grained AlCrSi dispersoid phase when subjected to a solution heat treatment. The aluminum alloy also may be formulated to develop a microstructure including one or more Cu-containing precipitate phases when subjected to an aging heat treatment.

    MAGNESIUM-CONTAINING, ALUMINUM-BASED ALLOY FOR THIN-WALL CASTINGS
    15.
    发明申请
    MAGNESIUM-CONTAINING, ALUMINUM-BASED ALLOY FOR THIN-WALL CASTINGS 审中-公开

    公开(公告)号：US20190177818A1

    公开(公告)日：2019-06-13

    申请号：US16302122

    申请日：2016-06-10

    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

    Inventor： Bin Hu ,  Pan Wang

    IPC: C22C21/08 ,  C22F1/047 ,  B22D21/00 ,  B22D17/00

    Abstract: An aluminum-magnesium alloy is disclosed which provides superior properties for casting in steel dies and good ductility for forming castings of complex shapes, including thin-wall portions. The aluminum-based alloy contains, in weight percent, about 2-15 percent magnesium, 0.2 to 3 percent silicon, 0.05 to 0.5 percent chromium, 0.05 to 0.5 percent manganese, 0.05 to 0.2% titanium, and a minimal content of iron. In its molten state this aluminum-magnesium-chromium alloy can be pushed into the molding cavities of iron-based dies in a high pressure die casting procedure and conform to complexly-shaped die surfaces with thin cavity portions without dissolving appreciable amounts of iron or experiencing die soldering on the die surfaces. The resulting castings display good strength and ductility and can be further enhanced by an artificial aging process after solution heat treatment.

    Aluminum alloys
    17.
    发明授权
    Aluminum alloys 有权

    公开(公告)号：US10927436B2

    公开(公告)日：2021-02-23

    申请号：US16486397

    申请日：2017-03-09

    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

    Inventor： Bin Hu

    IPC: C22C21/02 ,  C22F1/043

    Abstract: An aluminum alloy consisting essentially of from greater than 6 wt % to about 12.5 wt % silicon; iron present in an amount up to 0.15 wt %; from about 0.1 wt % to about 0.4 wt % chromium; from about 0.1 wt % to about 3 wt % copper; from about 0.1 wt % to about 0.5 wt % magnesium; from about 0.05 wt % to about 0.1 wt % titanium; less than 0.01 wt % of strontium; and a balance of aluminum and inevitable impurities. The aluminum alloy contains no vanadium. A method for increasing ductility and strength of an aluminum alloy without using vacuum and a T7 heat treatment, the method comprising: casting the molten aluminum alloy by a high pressure die-cast process to form a cast structure. The structural castings formed of the aluminum alloy composition disclosed herein exhibit desirable mechanical properties, such as high strength and high ductility/elongation.

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