公开(公告)号：US11421310B2

公开(公告)日：2022-08-23

申请号：US16163141

申请日：2018-10-17

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Andrew C. Bobel ,  Anil K. Sachdev

IPC: C22F1/053 ,  C22C21/10 ,  B33Y10/00 ,  B33Y70/00 ,  B22F10/20

Abstract: A precipitation hardenable aluminum alloy is disclosed along with a precipitation hardened form of the aluminum alloy and a method of manufacturing an aluminum alloy article from the precipitation hardenable aluminum alloy. The disclosed precipitation hardenable aluminum alloy has a composition that includes, on a weight percent (wt %) basis, 8%-13% zinc, 1.5%-5% magnesium, 0%-5% copper, 0%-2% of zirconium, chromium, or zirconium and chromium in total, and the balance aluminum with no more than 0.5% impurities. The alloy composition is adaptable to a wide range of manufacturing processes including additive manufacturing. The composition of the aluminum alloy also enables the dispersion of strengthening precipitate phases selected from an η-phase precipitate, a θ-phase precipitate, and a T-phase precipitate, while being free of a S-phase precipitate, when precipitation hardened.

公开(公告)号：US11305340B1

公开(公告)日：2022-04-19

申请号：US17036335

申请日：2020-09-29

Applicant: GM Global Technology Operations LLC

Inventor： David D. Goettsch ,  Garrold A. DeGrace ,  Gregory T. Naismith ,  Madhusudhan Raju Nannapuraju ,  Anil K. Sachdev

IPC: B22D17/22

Abstract: A modular casting mold for casting an automotive component includes a plurality of die portions defining a mold cavity corresponding to an automotive component, at least one of the plurality of die portions is an active die portion adapted to control the temperature of the modular casting mold throughout the casting process and including features for ejecting an automotive component cast within the modular casting mold, and the modular casting mold adapted to be attached to another modular casting mold for casting a single automotive component.

公开(公告)号：US20220010874A1

公开(公告)日：2022-01-13

申请号：US16927172

申请日：2020-07-13

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Robert Parrish ,  Wenying Yang ,  Zhe Li ,  Abir R. Das ,  Chad M. Huls ,  Anil K. Sachdev

IPC: F16H57/04 ,  F04C14/18 ,  F04C2/10 ,  F04C2/08

Abstract: A hydraulic gerotor pump for an automatic transmission may comprise a housing and a gear set rotatably disposed within the housing. The gear set may comprise an inner gear and an outer gear having radially opposed intermeshing teeth that together define a plurality of circumferentially disposed variable volume pumping chambers therebetween. The housing may be made of a first aluminum-based material, and the inner gear and the outer gear of the gear set may be made of a second aluminum-based material. The linear coefficient of thermal expansion of the first aluminum-based material may be substantially the same as that of the second aluminum-based material.

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

IPC: B60B27/00 ,  F16D65/12 ,  B60B3/10

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.

公开(公告)号：US10791787B2

公开(公告)日：2020-10-06

申请号：US16106721

申请日：2018-08-21

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Louis G. Hector, Jr. ,  Nilesh D. Mankame ,  Hanif Muhammad ,  Anil K. Sachdev

IPC: A42B3/10 ,  B32B27/08 ,  B32B3/06 ,  B32B3/08 ,  B32B3/12 ,  B32B3/26 ,  B32B3/30 ,  B32B5/02 ,  B32B5/26 ,  B32B7/12 ,  B32B9/00 ,  B32B9/04 ,  B32B15/04 ,  B32B15/08 ,  B32B15/09 ,  B32B15/14 ,  B32B15/18 ,  F16F7/00 ,  B60R21/34 ,  B32B27/36 ,  B32B27/12 ,  B32B18/00 ,  B32B17/00 ,  B32B15/20 ,  A42B3/06 ,  F16F7/12

Abstract: A cover covering an object includes an inner surface of the cover facing the object and spaced from the object, and an outer surface of the cover opposite the inner surface. A local energy absorber is operatively attached to the inner surface of the cover. The local energy absorber includes an energy absorbing core layer operatively attached to the inner surface of the cover and a frangible face sheet layer attached to the energy absorbing core layer facing the object. The frangible face sheet layer is to initiate fracture of the frangible face sheet layer during an impact applied to the outer surface defining an impact event having a duration of less than 20 milliseconds.

公开(公告)号：US10682723B2

公开(公告)日：2020-06-16

申请号：US15097821

申请日：2016-04-13

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： David R. Sigler ,  Blair E. Carlson ,  James G. Schroth ,  David S. Yang ,  Anil K. Sachdev

IPC: B23K11/20 ,  B23K11/11 ,  B23K11/30 ,  B23K103/20

Abstract: A method of resistance spot welding a steel workpiece and an aluminum or aluminum alloy workpiece, and a welding electrode used therein. In one step of the method a workpiece stack-up is provided. The workpiece stack-up includes a steel workpiece and an aluminum or aluminum alloy workpiece. Another step of the method involves contacting the aluminum or aluminum alloy workpiece with a weld face of the welding electrode. The welding electrode has a body and an insert. The insert is composed of a material having an electrical resistivity that is greater than an electrical resistivity of the material of the body. The weld face has a first section defined by a surface of the insert and has a second section defined by a surface of the body. Both the first and second sections make surface-to-surface contact with the aluminum or aluminum alloy workpiece amid resistance spot welding.

公开(公告)号：US20200061700A1

公开(公告)日：2020-02-27

申请号：US16112110

申请日：2018-08-24

Applicant: GM Global Technology Operations LLC

Inventor： Tyson W. Brown ,  Anil K. Sachdev ,  William R. Rodgers

IPC: B22F1/00 ,  B33Y10/00 ,  B33Y30/00 ,  B33Y70/00 ,  B22F3/105 ,  B33Y40/00

Abstract: Systems and methods for additive manufacturing of a metallic component using a metal-powder paste are described. The metal-powder paste is a mixture including a non-uniform metal powder and a flowable additive. The metal-powder paste is applied to a surface of a substrate and spread to thereby produce a uniform-thickness layer in areas corresponding to the metallic component. The flowable additive is driven off using thermal energy to thereby form a layer of the non-uniform metal powder having a uniform thickness. The non-uniform metal powder is then fused to the substrate to thereby form the metallic component.

公开(公告)号：US20190291182A1

公开(公告)日：2019-09-26

申请号：US15934342

申请日：2018-03-23

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Andrew C. Bobel ,  Tyson W. Brown ,  Anil K. Sachdev

IPC: B22F3/105 ,  B22F1/00 ,  C22C21/02

Abstract: A three-dimensional aluminum alloy part may be manufactured by a process in which a layer of aluminum alloy powder feed material is distributed over a substrate and scanned with a high-energy laser or electron beam in selective regions corresponding to a cross-section of the aluminum alloy part being formed. During the manufacturing process, the selective regions may melt and form a pool of molten aluminum alloy material. Thereafter, the pool of molten aluminum alloy material may cool and solidify into a solid layer of fused aluminum alloy material. During solidification of the pool of molten aluminum alloy material, solid phase particles may form within a solution of liquid phase aluminum prior to formation of solid phase aluminum dendrites. The resulting aluminum alloy part may exhibit a polycrystalline structure that predominantly includes a plurality of equiaxed grains, instead of columnar grains.

公开(公告)号：US20190032660A1

公开(公告)日：2019-01-31

申请号：US15659088

申请日：2017-07-25

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Tyson W. Brown ,  Anil K. Sachdev ,  Carnell E. Williams

IPC: F04C18/08 ,  F04C29/12 ,  F04C29/00 ,  F02B33/38 ,  F04C18/12

CPC classification number: F04C18/084 ,  F02B33/38 ,  F04C18/126 ,  F04C18/16 ,  F04C18/56 ,  F04C29/0085 ,  F04C29/122 ,  F04C2240/20 ,  F04C2240/40 ,  F04C2250/20

Abstract: A rotor for a positive displacement compressor assembly having a housing defining an inlet, an outlet, and a rotor cavity in communication with the inlet and the outlet. The rotor may comprise a rotor body and a porous inner core enclosed within the rotor body. The rotor may comprise a tapered rotor body having an outer radius that decreases from a first end to a second end thereof. In one form, the positive displacement compressor assembly may comprise a supercharger assembly for an internal combustion engine.

公开(公告)号：US10086429B2

公开(公告)日：2018-10-02

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 ,  B22D27/04 ,  B22D17/00 ,  C22C23/02 ,  C22C21/02 ,  C22C21/10 ,  B22D21/00 ,  B22D30/00 ,  C22C21/06 ,  C22C21/08

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.