公开(公告)号：US10240224B2

公开(公告)日：2019-03-26

申请号：US15235922

申请日：2016-08-12

Applicant: GM Global Technology Operations LLC

Inventor： Charles M. Enloe ,  Jianfeng Wang ,  Curt D. Horvath ,  Jatinder P. Singh

IPC: C22C38/02 ,  C22C38/04 ,  C22C38/22 ,  C22C38/26

Abstract: An alloy with tailored hardenability includes carbon, silicon, manganese, nickel, molybdenum, chromium, vanadium, and cobalt. A time and temperature transformation diagram of the alloy has a bainite nose and a ferrite nose that occur at approximately the same time at approximately 4 seconds at temperatures of about 750 K and 950 K, respectively.

公开(公告)号：US20180044769A1

公开(公告)日：2018-02-15

申请号：US15235922

申请日：2016-08-12

Applicant: GM Global Technology Operations LLC

Inventor： Charles M. Enloe ,  Jianfeng Wang ,  Curt D. Horvath ,  Jatinder P. Singh

IPC: C22C38/26 ,  C22C38/04 ,  C22C38/02 ,  C22C38/22

CPC classification number: C22C38/26 ,  C21D2211/002 ,  C21D2211/005 ,  C21D2211/008 ,  C21D2211/009 ,  C22C38/02 ,  C22C38/04 ,  C22C38/22

Abstract: An alloy with tailored hardenability includes carbon, silicon, manganese, nickel, molybdenum, chromium, vanadium, and cobalt. A time and temperature transformation diagram of the alloy has a bainite nose and a ferrite nose that occur at approximately the same time at approximately 4 seconds at temperatures of about 750 K and 950 K, respectively.

公开(公告)号：US11541479B2

公开(公告)日：2023-01-03

申请号：US17101316

申请日：2020-11-23

Applicant: GM Global Technology Operations LLC

Inventor： Huaxin Li ,  Liang Wang ,  Daniel J. Wilson ,  Jatinder P. Singh

IPC: B23K26/323 ,  B32B15/01 ,  C22C9/06 ,  B23K33/00 ,  B23K26/211 ,  B23K26/342 ,  B23K26/60 ,  B23K35/30 ,  B23K101/00

Abstract: A method of welding a component made from a ferrous alloy to a component made from an aluminum alloy includes machining and cleaning a fay surface on the ferrous alloy component, machining and cleaning a fay surface on the aluminum alloy component, depositing a layer of copper alloy material onto the fay surface of the ferrous alloy component, forming a weld groove on at least one of the layer of copper alloy material deposited on the fay surface of the ferrous alloy component and the fay surface of the aluminum alloy component, and laser welding the layer of copper alloy deposited on the fay surface of the ferrous alloy component and the fay surface of the aluminum alloy component to one another.

公开(公告)号：US20220161362A1

公开(公告)日：2022-05-26

申请号：US17101316

申请日：2020-11-23

Applicant: GM Global Technology Operations LLC

Inventor： Huaxin Li ,  Liang Wang ,  Daniel J. Wilson ,  Jatinder P. Singh

IPC: B23K26/323 ,  B32B15/01 ,  C22C9/06 ,  B23K35/30 ,  B23K33/00 ,  B23K26/211 ,  B23K26/342 ,  B23K26/60

Abstract: A method of welding a component made from a ferrous alloy to a component made from an aluminum alloy includes machining and cleaning a fay surface on the ferrous alloy component, machining and cleaning a fay surface on the aluminum alloy component, depositing a layer of copper alloy material onto the fay surface of the ferrous alloy component, forming a weld groove on at least one of the layer of copper alloy material deposited on the fay surface of the ferrous alloy component and the fay surface of the aluminum alloy component, and laser welding the layer of copper alloy deposited on the fay surface of the ferrous alloy component and the fay surface of the aluminum alloy component to one another.

公开(公告)号：US20180237878A1

公开(公告)日：2018-08-23

申请号：US15436213

申请日：2017-02-17

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Jianfeng Wang ,  Charles M. Enloe ,  Jatinder P. Singh ,  Curt D. Horvath

IPC: C21D9/00 ,  C22C38/12 ,  C22C38/04 ,  C22C38/00 ,  C21D8/02 ,  C22C38/02 ,  C22C21/02 ,  B21D22/02

CPC classification number: C21D9/0068 ,  B21D22/022 ,  B21D35/005 ,  B32B15/012 ,  C21D1/34 ,  C21D8/005 ,  C21D8/0278 ,  C21D9/46 ,  C22C21/02 ,  C22C38/002 ,  C22C38/02 ,  C22C38/04 ,  C22C38/12

Abstract: Disclosed are hot forming systems and apparatuses for metalworking components from micro-alloyed press hardened steel (PHS), methods for operating such systems/apparatuses, processes for hot forming components from micro-alloyed PHS, and components formed from such processes. A method of hot forming components from steel is disclosed. The method includes transferring a workpiece formed from a PHS micro-alloyed with niobium (e.g., 0.02-0.1 wt % Nb) to a furnace, e.g., via material handling robot. The workpiece is then heated to a peak furnace temperature and during a furnace time (e.g., total ramp and soak time) selected from a pentagon having heating time and temperature coordinates of: A (about 2 minutes, about 940° C.), B (about 2 minutes, about 1100° C.), C (about 3.5 minutes, about 1100° C.), D (about 5 minutes, about 975° C.), and E (about 5 minutes, about 940° C.). The heated workpiece is then transferred to a hot forming apparatus.