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    ALUMINUM ALLOY AND METHOD OF MANUFACTURING
    3.
    发明申请
    ALUMINUM ALLOY AND METHOD OF MANUFACTURING 审中-公开

    公开(公告)号：US20190211431A1

    公开(公告)日：2019-07-11

    申请号：US15867146

    申请日：2018-01-10

    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

    Inventor： Henry Zhan ,  Bin Hu

    IPC: 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.

    METHOD OF MANUFACTURING A PIN FOR A MOLD FOR A DIE CASTING PROCESS
    4.
    发明申请
    METHOD OF MANUFACTURING A PIN FOR A MOLD FOR A DIE CASTING PROCESS 审中-公开

    公开(公告)号：US20190024226A1

    公开(公告)日：2019-01-24

    申请号：US16070699

    申请日：2016-01-22

    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

    Inventor： Bin Hu ,  Pan Wang ,  Yiwu Xu

    IPC: C23C8/24 ,  C23C14/06 ,  B22D17/22 ,  C21D9/00

    Abstract: A method of manufacturing a pin (46) for a o mold (28) includes forming the pin (46) to include a substantially uniform initial hardness throughout the entire structure of the formed pin (46). The formed pin (46) is then processed with a hardening process, such that the processed pin(46) exhibits a hardness defining a hardness gradient that gradually increases from the initial hardness at a central interior region (56) of the pin (46) to an increased surface hardness at an exterior surface (60) of the pin (46). After processing the pin (46) with the hardening process, a coating (64) maybe deposited onto the exterior surface (60) of the pin (46) with a physical vapor deposition process. The coating (64) exhibits a hardness that is greater than the hardness of the increased surface hardness of the exterior surface (60) of the pin (46). The pin (46) may include, for example, a core pin, a squeeze pin, or an ejector pin.

    ALUMINUM ALLOY COMPOSITION FOR SIMPLIFIED SEMI-SOLID CASTING PROCESS AND METHOD OF SEMI-SOLID CASTING
    8.
    发明申请
    ALUMINUM ALLOY COMPOSITION FOR SIMPLIFIED SEMI-SOLID CASTING PROCESS AND METHOD OF SEMI-SOLID CASTING 审中-公开

    公开(公告)号：US20200325558A1

    公开(公告)日：2020-10-15

    申请号：US16426811

    申请日：2019-05-30

    Applicant: GM Global Technology Operations LLC

    Inventor： Bin Hu ,  Pan Wang

    IPC: C22C21/02 ,  B22D21/00

    Abstract: An aluminum alloy having about 0.03 wt % to about 0.50 wt % Niobium (Nb); about 0.03 wt % to about 0.50% Vanadium (V); about 0.03 wt % to about 0.50% Titanium (Ti), greater than 0 wt % to about 0.50 wt % Boron (B); and the balance is Aluminum (Al) and impurities. The alloy includes a weight percent ratio of (Nb+V)/Ti from about 1 to about 5, preferably from about 2 to about 3. The alloy may include a weight percent ratio (Nb+V+Ti)/B from about 1 to about 15, preferably from about 5 to about 10. The aluminum alloy may be form by incorporating 1 part master alloy, grain refiner, having about 1.5 wt % to about 4.0 wt % Niobium (Nb); from about 0.5 wt % to about 2.0% Titanium (Ti), and from about 0.2 wt % to about 0.8 wt % Boron (B) to about 27 to 80 part conventional aluminum alloy, by weight.

    INCREASING STRENGTH OF AN ALUMINUM ALLOY
    9.
    发明申请
    INCREASING STRENGTH OF AN ALUMINUM ALLOY 审中-公开

    公开(公告)号：US20180127859A1

    公开(公告)日：2018-05-10

    申请号：US15346699

    申请日：2016-11-08

    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

    Inventor： Bin Hu ,  Pan Wang ,  Qi Lu

    IPC: C22F1/043 ,  C22C21/02 ,  B22D17/00 ,  B22D18/04 ,  B22D21/00

    Abstract: In an example of a method for increasing strength of an aluminum alloy, the aluminum alloy is formed in a molten state. The aluminum alloy includes from about 4 wt % to about 11 wt % silicon, from greater than 0.2 wt % to about 0.5 wt % chromium, from about 0.1 wt % to about 0.5 wt % magnesium, from about 0.01 wt % to about 0.1 wt % titanium, equal to or less than about 0.5 wt % iron, equal to or less than about 0.5 wt % manganese, and a balance of aluminum. The aluminum alloy is subjected to a solution heat treatment. The aluminum alloy is quenched, and the aluminum alloy is age hardened at an age hardening temperature ranging from about 140° C. to 175° C. for a time period ranging from about 3 hours to about 35 hours.

    CHILLED-ZONE MICROSTRUCTURES FOR CAST PARTS MADE WITH LIGHTWEIGHT METAL ALLOYS
    10.
    发明申请
    CHILLED-ZONE MICROSTRUCTURES FOR CAST PARTS MADE WITH LIGHTWEIGHT METAL ALLOYS 审中-公开
    用轻金属合金铸造的铸件的冷冻区微结构

    公开(公告)号：US20160114387A1

    公开(公告)日：2016-04-28

    申请号：US14881551

    申请日：2015-10-13

    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

    Inventor： Bin Hu ,  Anil K. Sachdev ,  Jon T. Carter ,  Jianfeng Wang

    IPC: B22D21/04 ,  C22C21/10 ,  C22C23/02 ,  C22C21/02 ,  B22D27/04 ,  B22D17/00

    CPC classification number: B22D21/04 ,  B22D17/00 ,  B22D21/007 ,  B22D27/045 ,  B22D30/00 ,  C22C21/02 ,  C22C21/06 ,  C22C21/08 ,  C22C21/10 ,  C22C23/02

    Abstract: Methods for casting high strength, high ductility lightweight metal components are provided. The casting may be die-casting. A molten lightweight metal alloy is introduced into a cavity of a mold. The molten lightweight metal alloy is solidified and then a solid component is removed from the mold. The solid component is designed to have a thin wall. For example, the solid component has at least one dimension of less than or equal to about 2 mm. In this way, a chill zone microstructure is formed that extends across the at least one dimension of the solid lightweight metal alloy component. The solid component thus may be substantially free of dendritic microstructure formation, enabling more extensive alloy chemistries than previously possible during casting. Such methods may be used to form high strength, high ductility, and lightweight metal alloy vehicle components.

    Abstract translation: 提供了高强度，高延展性的轻质金属部件的铸造方法。 铸件可能是压铸的。 将熔融的轻质金属合金引入模具的空腔中。 将熔融的轻质金属合金固化，然后从模具中取出固体成分。 固体组分设计为具有薄壁。 例如，固体组分具有小于或等于约2mm的至少一个尺寸。 以这种方式，形成了延伸穿过固体轻质金属合金部件的至少一个尺寸的冷却区微结构。 因此，固体组分可以基本上没有树枝状微结构形成，使得能够比铸造期间更可能的更广泛的合金化学。 这种方法可用于形成高强度，高延展性和轻质金属合金车辆部件。

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