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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
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.
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公开(公告)号：US20200072305A1
公开(公告)日：2020-03-05
申请号：US16509015
申请日：2019-07-11
Applicant: GM Global Technology Operations LLC
Inventor： Henry Zhan , Jianfeng Wang , Michael L. Holly , Mark T. Riefe
Abstract: A method for manufacturing a ferrous rotational member including the steps of turning a first portion of the friction surface at a sufficient feed rate to provide a first deformed layer on the first portion of the friction surface; fine turning a second portion of the friction surface at a sufficient feed rate to provide a second deformed layer on the second portion of the friction surface; burnishing the first and second portions of the friction surface to achieve a predetermined roughness; and nitrocarburizing the rotational member at a time and temperature sufficient for the diffusion of nitrogen atoms and carbon atoms through the deformed layer to form hardened casings having variable thickness. The ferrous rotational member may be that of a brake rotor having a hub surface and a friction surface, where the hub surface and friction surface have a variable thickness hardened casing.
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公开(公告)号：US11926886B2
公开(公告)日：2024-03-12
申请号：US17565634
申请日：2021-12-30
Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
Inventor： Henry Zhan , Congjie Wang
Abstract: A master alloy including an alloy composition including magnesium (Mg) at a concentration of greater than or equal to about 1.00 wt. % to less than or equal to about 90 wt. %, boron (B) at a concentration of greater than or equal to about 0.01 wt. % to less than or equal to about 20 wt. %, and aluminum (Al) at a concentration of greater than or equal to about 0.1 wt. % to less than or equal to about 90 wt. %, wherein the alloy composition includes MgB2 particles at a volume fraction greater than or equal to about 0.01% to less than or equal to about 20%.
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公开(公告)号：US11766713B2
公开(公告)日：2023-09-26
申请号：US17481641
申请日：2021-09-22
Applicant: GM Global Technology Operations LLC
Inventor： Henry Zhan , Congjie Wang
Abstract: A method to form a magnesium article includes: heating materials including magnesium, aluminum, manganese and tin in a furnace to create an alloy having a composition of; the magnesium in an amount greater than or equal to 90% by weight of the materials; the aluminum ranging between approximately 2.0% up to approximately 4.0% by weight of the materials; the manganese ranging between approximately 0.43% up to approximately 0.6% by weight of the materials; and the tin ranging between approximately 1% up to approximately 3% by weight of the materials; chill casting the alloy to create a cast billet; and heating the cast billet at a temperature ranging from approximately 380° C. up to approximately 420° C. and maintaining the temperature for a time period between approximately 4 hours to 10 hours to homogenize element distribution.
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公开(公告)号：US11655513B2
公开(公告)日：2023-05-23
申请号：US17117254
申请日：2020-12-10
Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
Inventor： Henry Zhan
CPC classification number: C21D8/0236 , C21D9/32 , C21D9/40 , C22C23/04 , C22F1/06
Abstract: Methods of making magnesium-based alloy components, such as automotive components, include treating a casting comprising a magnesium-based alloy to a first deforming process to form a preform. In one aspect, the first deforming process has a first maximum predetermined strain rate of greater than or equal to about 0.001/s to less than or equal to about 1/s in an environment having a temperature of ≥to about 250° C. to ≤to about 450° C. In another aspect, the first deforming process is cold deforming that is followed by annealing. The preform is then subjected to a second deforming process having a second maximum predetermined strain rate of ≥about 1/s to ≤about 100/s in an environment having a temperature of ≥about 150° C. to ≤about 450° C. to form the magnesium-based alloy component substantially free of cracking. A solid magnesium-based alloy component having select microstructures are also provided.
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Patent Agency Ranking
公开(公告)号：US11548317B2
公开(公告)日：2023-01-10
申请号：US16903928
申请日：2020-06-17
Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
Inventor： Henry Zhan , Jianfeng Wang , Congjie Wang , Ming Liu , Anil K. Sachdev
Abstract: A brake rotor includes a friction portion, a hat portion axially extending from the friction portion and including a top face that is axially displaced from the friction portion and a side wall that extends from the friction portion to the top face, and a nose portion which extends axially from the top face of the hat portion away from the friction portion.
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公开(公告)号：US20210394554A1
公开(公告)日：2021-12-23
申请号：US16903928
申请日：2020-06-17
Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
Inventor： Henry Zhan , Jianfeng Wang , Congjie Wang , Ming Liu , Anil K. Sachdev
Abstract: A brake rotor includes a friction portion, a hat portion axially extending from the friction portion and including a top face that is axially displaced from the friction portion and a side wall that extends from the friction portion to the top face, and a nose portion which extends axially from the top face of the hat portion away from the friction portion.
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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
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.
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公开(公告)号：US12226815B2
公开(公告)日：2025-02-18
申请号：US17872766
申请日：2022-07-25
Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
Inventor： Henry Zhan , Congjie Wang
Abstract: The present disclosure provides a method of forming an extruded billet from a coarse-grained magnesium alloy billet. The method includes extruding the coarse-grained magnesium alloy biller at temperatures greater than or equal to about 300° C. to less than or equal to about 360° C. to from the extruded billet. The coarse-grained magnesium alloy billet has an average grain size greater than or equal to about 800 μm, and has a low aluminum content. The coarse-grained magnesium alloy billet includes greater than or equal to about 0.5 wt. % to less than or equal to about 3 wt. % of aluminum. The extruded billet may have a plurality of twins with lenticular morphology, which occupies an area fraction greater than or equal to about 20% of a total area of the extruded billet.
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公开(公告)号：US11987864B2
公开(公告)日：2024-05-21
申请号：US17577199
申请日：2022-01-17
Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
Inventor： Henry Zhan , Congjie Wang
IPC: C22C23/02
CPC classification number: C22C23/02
Abstract: A magnesium alloy matrix having an alloy composition including aluminum at a concentration of between 0.5 wt. % to 2.5 wt. %, manganese at a concentration of between 0.3 wt. % to 1.0 wt. %, the concentration of manganese is greater than or equal to a value of [Mn] determined by a linear function [Mn]=x[Al], where x is at least 0.6 when [Al]=0.5 and is at least 0.14 when [Al]=2.5, zinc at a concentration of between 0 wt. % to 3 wt. %, tin at a concentration of between 0 wt. % to 3 wt. %, calcium at a concentration of between 0 wt. % to 0.5%, rare earth metals at a concentration of between 0 wt. % to 5 wt. %, and a balance of the alloy composition being magnesium.
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