公开(公告)号：US20190193187A1

公开(公告)日：2019-06-27

申请号：US16293264

申请日：2019-03-05

Applicant: ArcelorMittal

Inventor： Astrid Perlade ,  Samuel Vignier ,  Frederic Kegel ,  Artem Arlazarov

IPC: B23K11/11 ,  C21D6/00 ,  C21D8/02 ,  C21D8/04 ,  C21D9/46 ,  C22C38/02 ,  C22C38/04 ,  C22C38/12 ,  C21D9/50 ,  B22D11/00 ,  C23C2/12 ,  C22C38/00 ,  C22C38/06 ,  C23C2/06

CPC classification number: B23K11/11 ,  B22D11/001 ,  B23K11/166 ,  B23K2101/18 ,  B23K2101/34 ,  B23K2103/04 ,  C21D6/005 ,  C21D6/008 ,  C21D8/0205 ,  C21D8/0226 ,  C21D8/0236 ,  C21D8/0263 ,  C21D8/0278 ,  C21D8/0436 ,  C21D9/46 ,  C21D9/50 ,  C21D9/505 ,  C21D2211/001 ,  C21D2211/005 ,  C21D2211/008 ,  C22C38/002 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/12 ,  C22C38/14 ,  C23C2/06 ,  C23C2/12

Abstract: A spot welded joint of at least two steel sheets is provided. At least one of the steel sheets presents yield strength above or equal to 600 MPa, an ultimate tensile strength above or equal to 1000 MPa, uniform elongation above or equal to 15%. The base metal chemical composition includes 0.05≤C≤0.21%, 4.0≤Mn≤7.0%, 0.5≤Al≤3.5%, Si≤2.0%, Ti≤0.2%, V≤0.2%, Nb≤0.2%, P≤0.025%, B≤0.0035%, and the spot welded joint contains a molten zone microstructure containing more than 0.5% of Al and containing a surface fraction of segregated areas lower than 1%, said segregated areas being zones larger than 20 μm2 and containing more than the steel nominal phosphorus content.

公开(公告)号：US10272514B2

公开(公告)日：2019-04-30

申请号：US14907429

申请日：2014-07-22

Applicant: ArcelorMittal

Inventor： Astrid Perlade ,  Samuel Vignier ,  Frederic Kegel ,  Artem Arlazarov

IPC: B23K11/11 ,  C21D8/02 ,  C21D8/04 ,  C21D9/46 ,  C22C38/02 ,  C22C38/04 ,  C22C38/12 ,  C21D9/50 ,  B22D11/00 ,  C21D6/00 ,  C22C38/00 ,  C22C38/06 ,  C23C2/06 ,  C23C2/12 ,  B23K101/18 ,  B23K103/04 ,  B23K11/16 ,  C22C38/14 ,  B23K101/34

Abstract: The present invention provides a spot welded joint of at least two steel sheets. At least one of the steel sheets presents yield strength above or equal to 600 MPa, an ultimate tensile strength above or equal to 1000 MPa, uniform elongation above or equal to 15%. The base metal chemical composition includes 0.05≤C≤0.21%, 4.0≤Mn≤7.0%, 0.5≤Al≤3.5%, Si≤2.0%, Ti≤0.2%, V≤0.2%, Nb≤0.2%, P≤0.025%, B≤0.0035%, and the spot welded joint contains a molten zone microstructure containing more than 0.5% of Al and containing a surface fraction of segregated areas lower than 1%, said segregated areas being zones larger than 20 μm2 and containing more than the steel nominal phosphorus content.

公开(公告)号：US12151297B2

公开(公告)日：2024-11-26

申请号：US17961877

申请日：2022-10-07

Applicant: ArcelorMittal

Inventor： Astrid Perlade ,  Samuel Vignier ,  Frederic Kegel ,  Artem Arlazarov

IPC: B23K11/11 ,  B22D11/00 ,  C21D6/00 ,  C21D8/02 ,  C21D8/04 ,  C21D9/46 ,  C21D9/50 ,  C22C38/00 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/12 ,  C23C2/06 ,  C23C2/12 ,  B23K11/16 ,  B23K101/18 ,  B23K101/34 ,  B23K103/04 ,  C22C38/14

Abstract: A spot welded joint of at least two steel sheets is provided. At least one of the steel sheets presents yield strength above or equal to 600 MPa, an ultimate tensile strength above or equal to 1000 MPa, uniform elongation above or equal to 15%. The base metal chemical composition includes 0.05≤C≤0.21%, 4.0≤Mn≤7.0%, 0.5≤Al≤3.5%, Si≤2.0%, Ti≤0.2%, V≤0.2%, Nb≤0.2%, P≤0.025%, B≤0.0035%, and the spot welded joint contains a molten zone microstructure containing more than 0.5% of Al and containing a surface fraction of segregated areas lower than 1%, said segregated areas being zones larger than 20 μm2 and containing more than the steel nominal phosphorus content.

公开(公告)号：US20230050317A1

公开(公告)日：2023-02-16

申请号：US17961877

申请日：2022-10-07

Applicant: ArcelorMittal

Inventor： Astrid Perlade ,  Samuel Vignier ,  Frederic Kegel ,  Artem Arlazarov

IPC: B23K11/11 ,  C21D8/02 ,  C21D8/04 ,  C21D9/46 ,  C22C38/02 ,  C22C38/04 ,  C22C38/12 ,  C21D9/50 ,  B22D11/00 ,  C21D6/00 ,  C22C38/00 ,  C22C38/06 ,  C23C2/06 ,  C23C2/12

Abstract: A spot welded joint of at least two steel sheets is provided. At least one of the steel sheets presents yield strength above or equal to 600 MPa, an ultimate tensile strength above or equal to 1000 MPa, uniform elongation above or equal to 15%. The base metal chemical composition includes 0.05≤C≤0.21%, 4.0≤Mn≤7.0%, 0.5≤Al≤3.5%, Si≤2.0%, Ti≤0.2%, V≤0.2%, Nb≤0.2%, P≤0.025%, B≤0.0035%, and the spot welded joint contains a molten zone microstructure containing more than 0.5% of Al and containing a surface fraction of segregated areas lower than 1%, said segregated areas being zones larger than 20 μm2 and containing more than the steel nominal phosphorus content.

公开(公告)号：US11504795B2

公开(公告)日：2022-11-22

申请号：US16293264

申请日：2019-03-05

Applicant: ArcelorMittal

Inventor： Astrid Perlade ,  Samuel Vignier ,  Frederic Kegel ,  Artem Arlazarov

IPC: B23K11/11 ,  C21D8/02 ,  C21D8/04 ,  C21D9/46 ,  C22C38/02 ,  C22C38/04 ,  C22C38/12 ,  C21D9/50 ,  B22D11/00 ,  C21D6/00 ,  C22C38/00 ,  C22C38/06 ,  C23C2/06 ,  C23C2/12 ,  B23K101/18 ,  B23K103/04 ,  B23K11/16 ,  C22C38/14 ,  B23K101/34

Abstract: A spot welded joint of at least two steel sheets is provided. At least one of the steel sheets presents yield strength above or equal to 600 MPa, an ultimate tensile strength above or equal to 1000 MPa, uniform elongation above or equal to 15%. The base metal chemical composition includes 0.05≤C≤0.21%, 4.0≤Mn≤7.0%, 0.5≤Al≤3.5%, Si≤2.0%, Ti≤0.2%, V≤0.2%, Nb≤0.2%, P≤0.025%, B≤0.0035%, and the spot welded joint contains a molten zone microstructure containing more than 0.5% of Al and containing a surface fraction of segregated areas lower than 1%, said segregated areas being zones larger than 20 μm2 and containing more than the steel nominal phosphorus content.