公开(公告)号：US20210222265A1

公开(公告)日：2021-07-22

申请号：US17153848

申请日：2021-01-20

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Qi LU ,  Jianfeng WANG ,  Shane M. ANDERSON ,  Curt D. HORVATH ,  Jason J. CORYELL

IPC: C21D6/00 ,  C22C38/38 ,  C22C38/34 ,  C22C38/20 ,  C21D1/18 ,  C21D9/46 ,  C21D8/00

Abstract: A steel composition is provided. The steel composition includes 0.1-0.45 wt. % carbon (C), greater than 0-4.5 wt. % manganese (Mn), 0.5-5 wt. % chromium (Cr), 0.5-2.5 wt. % silicon (Si), greater than 0-2 wt. % copper (Cu), and a balance of iron (Fe). The combined concentration of the Mn, Cr, and Cu is greater than about 2 wt. %. The steel composition is configured to form a surface oxide layer comprising oxides of Cr, Si, and Cu after being subjected to press hardening. Press-hardened steel fabricated from the steel composition and a method of fabricating a press-hardened steel component from the steel composition are also provided.

公开(公告)号：US20170028514A1

公开(公告)日：2017-02-02

申请号：US15303205

申请日：2014-04-10

Applicant: Xin YANG ,  GM Global Technology Operations LLC

Inventor： Xin YANG ,  Jianfeng WANG

IPC: B23K31/02 ,  B32B37/12 ,  B32B7/12 ,  B32B27/08 ,  B32B15/04 ,  B32B15/08 ,  B32B15/18 ,  B32B15/20 ,  B29C65/48 ,  B32B3/30

CPC classification number: B23K31/02 ,  B23K2101/006 ,  B29C65/48 ,  B32B3/08 ,  B32B3/30 ,  B32B7/12 ,  B32B15/043 ,  B32B15/08 ,  B32B15/18 ,  B32B15/20 ,  B32B27/08 ,  B32B37/12 ,  B32B2264/105 ,  B32B2307/50 ,  B32B2307/54 ,  B32B2307/542 ,  B32B2605/00

Abstract: A bonding system (100) comprises a first substrate (110) having a first contact surface (115) comprising a plurality of protuberances (130), a second substrate (120) having a second contact surface (125), an adhesive (200) in contact with the first contact surface (115) and the second contact surface (125), and a plurality of solder balls (300) positioned in the adhesive between the first contact surface (115) and the second contact surface (125). A bonding method to produce a solder-reinforced adhesive bond joining a first substrate (110) and second substrate (120), comprises applying an adhesive (200) on a first contact surface (115), of the first substrate (110), including a plurality of protuberances (130), positioning, at least partially into the adhesive (200), each a plurality of solder balls (300), and connecting, to a portion of the adhesive (200) opposite the first contact surface (115), a second contact surface (125).

Abstract translation: 接合系统（100）包括具有包括多个突起（130）的第一接触表面（115）的第一基底（110），具有第二接触表面（125）的第二基底（120），粘合剂（200） 与第一接触表面（115）和第二接触表面（125）接触的多个焊球（300）和位于第一接触表面（115）和第二接触表面（125）之间的粘合剂中的多个焊球（300）。 一种用于产生连接第一衬底（110）和第二衬底（120）的焊料增强粘合剂粘合剂的接合方法，包括在第一衬底（110）的第一接触表面（115）上施加粘合剂（200），包括 多个突起（130），至少部分地定位在所述粘合剂（200）中，每个都具有多个焊球（300），并且连接到与所述第一接触表面（115）相对的所述粘合剂（200）的一部分， ，第二接触表面（125）。

公开(公告)号：US20230383383A1

公开(公告)日：2023-11-30

申请号：US17873740

申请日：2022-07-26

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Pan WANG ,  Henry ZHAN ,  Jianfeng WANG ,  Lepeng ZHANG

IPC: C22C21/02 ,  C22C1/02 ,  B62D29/00

CPC classification number: C22C21/02 ,  C22C1/026 ,  B62D29/008

Abstract: A vehicle including recyclable cast aluminum alloy components. The recyclable cast aluminum alloy components include a vehicle body component and a vehicle chassis component. In combination, the recyclable cast aluminum alloy components include, by mass: silicon in an amount greater than or equal to about 6% to less than or equal to about 11%, magnesium in an amount less than or equal to about 0.5%, iron in an amount greater than or equal to about 0.15% to less than or equal to about 0.25%, manganese in an amount less than or equal to about 0.3%, and greater than or equal to about 88% aluminum. A recycled aluminum alloy component may be cast from a melt of the recyclable cast aluminum alloy components. The recyclable cast aluminum alloy components account for, by mass, greater than or equal to about 70%, about 80%, or about 90% of the recycled aluminum alloy component.

公开(公告)号：US20230340646A1

公开(公告)日：2023-10-26

申请号：US17853410

申请日：2022-06-29

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Henry ZHAN ,  Zhou WANG ,  Jianfeng WANG

IPC: C22C21/02

CPC classification number: C22C21/02

Abstract: An aluminum alloy and shaped aluminum alloy parts cast therefrom. The aluminum alloy including, by mass, ≥about 6.5% to ≤about 8% silicon, ≥about 0.1% to ≤about 0.35% magnesium, ≥about 0.2% to ≤about 0.25% iron, ≥about 0.05% to ≤about 0.15% manganese, and ≥about 0.1% to ≤about 0.2% chromium. The mass percentage of iron (Fe%), the mass percentage of manganese (Mn %), and the mass percentage of chromium (Cr %) in the aluminum alloy satisfy the relationships: (i) [Mn %+(a×Cr %)]/Fe %>1, and (ii) Fe %+(b×Mn %)+(c×Cr %)>0.6%, where about 1.3≤a≤about 1.7, about 1.2≤b≤about 1.7, and about 2.5≤c≤about 2.9.

公开(公告)号：US20230111725A1

公开(公告)日：2023-04-13

申请号：US17725813

申请日：2022-04-21

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Mingfeng SHI ,  Sarah TEDESCO ,  Qi LU ,  Jason J. CORYELL ,  Jianfeng WANG

IPC: B23K26/26 ,  C21D9/50 ,  C22C38/48 ,  C22C38/46 ,  C22C38/44 ,  C22C38/42 ,  C22C38/04 ,  C22C38/02 ,  C21D6/00 ,  B21D22/02

Abstract: A hot formed joined blank includes a first metal blank having an ultimate tensile strength of ≥about 1300 MPa to ≤about 2000 MPa and defining a first surface, a second metal blank having an ultimate tensile strength of ≥about 400 MPa to ≤about 1200 MPa and defining a second coated surface having a coating disposed thereon. The coating includes aluminum and silicon or in alternative variations, zinc. A third surface of the second metal blank is joined to the first surface of the first metal blank to form the hot formed joined blank. A weld nugget is disposed along a boundary between the first and second metal blanks that is configured to join the first and second metal blanks, where the weld nugget optionally includes less than or equal to about 1.5 weight percent aluminum or a microstructure comprising austenite and delta-ferrite.

公开(公告)号：US20220380878A1

公开(公告)日：2022-12-01

申请号：US17695623

申请日：2022-03-15

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Henry ZHAN ,  Jianfeng WANG ,  Pan WANG

IPC: C22F1/04 ,  C22C21/00 ,  C22C1/02

Abstract: An alloy composition is provided. The alloy composition includes from about 0.5 wt. % to about 1.5 wt. % silicon (Si), from about 0.5 wt. % to about 1.5 wt. % magnesium (Mg), from about 0.1 wt. % to about 0.2 wt. % zirconium (Zr), from about 0.2 wt. % to about 0.4 wt. % iron (Fe), from 0 wt. % to about 0.3 wt. % chromium (Cr), from 0 wt. % to about 0.3 wt. % manganese (Mn), from about 0 wt. % to about 1 wt. % copper (Cu), from about 0 wt. % to about 0.2 wt. % titanium (Ti), from about 0 wt. % to about 1 wt. % vanadium (V), and a balance of aluminum (Al). Greater than or equal to about 60% of the alloy composition is derived from Al scrap. Methods of forming the alloy composition and methods of forming an extruded article from the composition are also provided.

公开(公告)号：US20210087661A1

公开(公告)日：2021-03-25

申请号：US16958362

申请日：2017-12-28

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Qi LU ,  Jiachen PANG ,  Jianfeng WANG

IPC: C22C38/54 ,  C22C38/46 ,  C22C38/44 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/48 ,  B21D22/02 ,  C21D9/00

Abstract: An alloy composition is provided. The alloy composition includes chromium (Cr) at a concentration of greater than or equal to about 0.5 wt. % to less than or equal to about 9 wt. %, carbon (C) at a concentration of greater than or equal to about 0.15 wt. % to less than or equal to about 0.5 wt. %, manganese (Mn) at a concentration of greater than or equal to about 0 wt. % to less than or equal to about 3 wt. %, silicon (Si) at a concentration of greater than or equal to about 0.5 wt. % to less than or equal to about 2 wt. %, and a balance of the alloy composition being iron. Methods of making shaped steel objects from the alloy composition are also provided.

公开(公告)号：US20230383374A1

公开(公告)日：2023-11-30

申请号：US17873926

申请日：2022-07-26

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC ,  Northeastern University

Inventor： Zhou WANG ,  Zhisong CHAI ,  Wei XU ,  Jianfeng WANG

IPC: C21D9/46 ,  C21D6/00 ,  C21D1/613 ,  C22C38/48 ,  C22C38/46 ,  C22C38/06 ,  C22C38/04 ,  C22C38/02 ,  C22C38/50

CPC classification number: C21D9/46 ,  C21D6/002 ,  C21D6/005 ,  C21D6/008 ,  C21D1/613 ,  C22C38/48 ,  C22C38/46 ,  C22C38/06 ,  C22C38/04 ,  C22C38/02 ,  C22C38/50 ,  C21D2211/008 ,  C21D2211/001 ,  C21D2211/002 ,  C21D2211/005

Abstract: The present disclosure provides a method for preparing a steel alloy sheet to enhance flatness. The method includes, inter alia, heating a steel alloy material to a first temperature that is greater than a full-austenitization point for the steel alloy material; holding steel alloy material at the first temperature for a period greater than or equal to about 1 second to less than or equal to about 10,000 seconds to from a precursor steel sheet; air quenching the precursor steel sheet to a second temperature that is less than the first temperature and greater than martensitic transformation starting temperature for the steel alloy material; and cooling the precursor steel sheet to room temperature to prepare the steel alloy sheet. The steel alloy material includes greater than or equal to about 0.5 wt. % to less than or equal to about 6 wt. % of chromium.

公开(公告)号：US20220205082A1

公开(公告)日：2022-06-30

申请号：US17564616

申请日：2021-12-29

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Qi LU ,  Jianfeng WANG

IPC: C23C16/06 ,  C23C16/44 ,  C23C16/02 ,  C22C38/18 ,  C22C38/02

Abstract: A method of manufacturing zinc-coated steel having a reduced susceptibility to liquid metal embrittlement (LME) according to various aspects of the present disclosure includes providing a steel substrate including iron, carbon in amount ranging from about 0.01-0.45 weight percent, chromium in an amount ranging from about 0.5-5 weight percent, and silicon in an amount ranging from about 0.5-2.5 weight percent. The method includes forming an oxide-containing layer on a surface of the steel substrate by annealing the steel substrate in an oxygen-containing atmosphere. The method further coating a zinc layer on the oxide-containing layer by a spray coating process. In certain aspects, the present disclosure also provides a method of forming an assembly having a reduced susceptibility to LME via resistance spot welding. The present disclosure also provides, in various aspects, a zinc-coated steel component including a steel substrate, an oxide-containing layer, and a zinc layer.

公开(公告)号：US20210276065A1

公开(公告)日：2021-09-09

申请号：US17251655

申请日：2018-06-19

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Jiachen PANG ,  Qi LU ,  Jianfeng WANG

IPC: B21D22/02 ,  C21D1/673 ,  C21D1/19 ,  C21D1/76 ,  C22C38/14 ,  C22C38/12 ,  C22C38/06 ,  C22C38/04

Abstract: A method of forming a shaped steel object is provided. The method includes cutting a blank from an alloy composition including 0.05-0.5 wt. % carbon, 4-12 wt. % manganese, 1-8 wt. % aluminum, 0-0.4 wt. % vanadium, and a remainder balance of iron. The method also includes heating the blank until the blank is austenitized to form a heated blank, transferring the heated blank to a press, forming the heating blank into a predetermined shape to form a stamped object, and decreasing the temperature of the stamped object to a temperature between a martensite start (Ms) temperature of the alloy composition and a martensite final (Mf) temperature of the alloy composition to form a shaped steel object comprising martensite and retained austenite.