公开(公告)号：US11680331B2

公开(公告)日：2023-06-20

申请号：US16754011

申请日：2018-10-19

Applicant: ArcelorMittal

Inventor： Anirban Chakraborty ,  Pascal Bertho ,  Hassan Ghassemi-Armaki ,  Christian Allely ,  Tiago Machado Amorim

IPC: C25D3/22 ,  B32B15/01 ,  B32B7/05 ,  B23K11/11 ,  C21D6/00 ,  C21D9/46 ,  C22C18/00 ,  C22C38/02 ,  C22C38/06 ,  C22C38/22 ,  C22C38/38 ,  C23F17/00

CPC classification number: C25D3/22 ,  B23K11/11 ,  B32B7/05 ,  B32B15/012 ,  C21D6/002 ,  C21D6/005 ,  C21D6/008 ,  C21D9/46 ,  C22C18/00 ,  C22C38/02 ,  C22C38/06 ,  C22C38/22 ,  C22C38/38 ,  C23F17/00 ,  B32B2250/02 ,  B32B2605/08 ,  C21D2211/001 ,  C21D2211/002 ,  C21D2211/005 ,  C21D2211/008

Abstract: A steel sheet coated with a coating comprising from 10 to 40% of nickel, the balance being zinc, such steel sheet having a microstructure comprising from 1 to 50% of residual austenite, from 1 to 60% of martensite and optionally at least one element chosen from: bainite, ferrite, cementite and pearlite, and the following chemical composition in weight: 0.10

公开(公告)号：US11162153B2

公开(公告)日：2021-11-02

申请号：US15748395

申请日：2016-07-11

Applicant: ARCELORMITTAL

Inventor： Tiago Machado Amorim ,  Christian Allely ,  Raisa Grigorieva ,  David Dussaussois

IPC: C21D9/46 ,  C22C21/10 ,  C23C2/12 ,  C23C2/28 ,  C23C2/40 ,  B32B15/01 ,  C21D8/00 ,  C21D6/00 ,  B21D22/02 ,  C23C2/26 ,  C21D1/673 ,  C22C21/02

Abstract: The present invention provides a method for the manufacture of a hardened part. The method includes the provision of a steel sheet pre-coated with a metallic coating including from 2.0 to 24.0% by weight of zinc, from 1.1 to 7.0% by weight of silicon, optionally from 1.1 to 8.0% by weight of magnesium when the amount of silicon is between 1.1 and 4.0%, and optionally additional elements chosen from Pb, Ni, Zr, or Hf, the content by weight of each additional element being less than 0.3% by weight, the balance being aluminum and unavoidable impurities and residuals elements, wherein the ratio Al/Zn is above 2.9. The method further includes the cutting of the coated steel sheet to obtain a blank, the thermal treatment of the blank at a temperature between 840 and 950° C. to obtain a fully austenitic microstructure in the steel, the transfer of the blank into a press tool, the hot-forming of the blank to obtain a part, the cooling of the part in order to obtain a microstructure in steel being martensitic or martensitic-bainitic or made of at least 75% of equiaxed ferrite, from 5 to 20% of martensite and bainite in amount less than or equal to 10%.

公开(公告)号：US10889884B2

公开(公告)日：2021-01-12

申请号：US16359751

申请日：2019-03-20

Applicant: ARCELORMITTAL

Inventor： Christian Allely ,  Tiago Machado Amorim ,  Joost De Strycker ,  Krista Godelieve Oscar Van Den Bergh

IPC: C23C2/12 ,  C23C2/40 ,  C23C2/00 ,  C22C21/00 ,  C23C2/28 ,  C21D8/00 ,  C22C38/00 ,  B32B15/18 ,  B32B15/20 ,  B32B15/01 ,  B32B15/04 ,  C22C21/04 ,  C23C30/00 ,  C23C28/02 ,  C22C21/02 ,  C22C21/18 ,  C23C2/04 ,  C23C2/06 ,  C22C21/08 ,  C23C2/02 ,  C22C21/14 ,  C22C21/06 ,  C23C2/26 ,  C23C2/34 ,  C22C21/16 ,  C22C21/10

Abstract: A steel sheet with a metallic coating is provided. A composition of the metallic coating includes from 2.0 to 24.0% by weight of zinc, from 7.1 to 12.0% by weight of silicon, optionally from 1.1 to 8.0% by weight of magnesium, and optionally additional elements chosen from Pb, Ni, Zr, or Hf. The content by weight of each additional element is less than 0.3%. A balance of the composition is aluminum, unavoidable impurities and residual elements. A ratio Al/Zn is from 4.0 to 6.0.

公开(公告)号：US20180274062A1

公开(公告)日：2018-09-27

申请号：US15765831

申请日：2016-09-30

Applicant: ArcelorMittal

Inventor： Christian Allely ,  Tiago Machado Amorim ,  Beril Corlu ,  Joost De Strycker

IPC: C22C21/10 ,  B32B15/01 ,  C23C2/12 ,  C23C2/40

Abstract: A steel sheet coated with a metallic coating is provided. The coating includes from 1.0 to 22.0% by weight of zinc, from 0.1 to 1.0% by weight of titanium, from 1.6 to 15.0% by weight of silicon, below 0.5% by weight of magnesium, below 0.05% by weight of La or Ce or both, below 0.2% by weight of Sn and optionally, less than 0.3% by weight of additional elements chosen from Sb, Pb, Ca, Mn, Cr, Ni, Zr, In, Hf or Bi. A balance of the coating includes aluminum and optionally unavoidable impurities and residual elements. A microstructure of the coating does not include Al—Zn binary phases. A coated part is also provided.

公开(公告)号：US12208461B2

公开(公告)日：2025-01-28

申请号：US17269322

申请日：2019-09-09

Applicant: ArcelorMittal

Inventor： Tiago Machado Amorim ,  Stéphanie Michaut ,  Jean-Marie Helmer ,  Pascal Bertho

IPC: B23K11/11 ,  B32B15/01 ,  C22C21/10 ,  C23C2/12 ,  B23K103/04

Abstract: An assembly of at least two metallic substrates spot welded together through at least one spot welded joint is provided, a method for the manufacture of the assembly is also provided, such method including two steps and the use of this assembly for the manufacture of automotive vehicle.

公开(公告)号：US11414737B2

公开(公告)日：2022-08-16

申请号：US15748262

申请日：2016-07-29

Applicant: ARCELORMITTAL

Inventor： Tiago Machado Amorim ,  Christian Allely ,  Grégory Leuillier

IPC: C23C2/12 ,  C23C2/06 ,  C23C2/28 ,  C21D1/673 ,  C21D8/02 ,  C22C21/10 ,  C22F1/053 ,  C23C22/07

Abstract: A method for the manufacture of a hardened part coated with a phosphatable coating is provided. The method includes providing a steel sheet pre-coated with a metallic coating including from 4.0 to 20.0% by weight of zinc, from 1.0 to 3.5% by weight of silicon, optionally from 1.0 to 4.0% by weight of magnesium, and optionally additional elements chosen from Pb, Ni, Zr, or Hf, the content by weight of each additional element being less than 0.3% by weight, the balance being aluminum and unavoidable impurities and residuals elements. The steel sheet is cut to obtain a blank, the blank is thermally treated at a temperature between 840 and 950° C. to obtain a fully austenitic microstructure in the steel, the blank is transferred into a press tool and hot-formed to obtain a part. The part is cooled to obtain a martensitic or martensitic-bainitic microstructure or made of at least 75% of equiaxed ferrite, from 5 to 20% of martensite and bainite in amount less than or equal to 10%.

公开(公告)号：US10947608B2

公开(公告)日：2021-03-16

申请号：US15765831

申请日：2016-09-30

Applicant: ArcelorMittal

Inventor： Christian Allely ,  Tiago Machado Amorim ,  Beril Corlu ,  Joost De Strycker

IPC: B32B15/01 ,  C22C21/10 ,  C23C2/12 ,  C21D1/673 ,  C23C2/40

Abstract: A steel sheet coated with a metallic coating is provided. The coating includes from 1.0 to 22.0% by weight of zinc, from 0.1 to 1.0% by weight of titanium, from 1.6 to 15.0% by weight of silicon, below 0.5% by weight of magnesium, below 0.05% by weight of La or Ce or both, below 0.2% by weight of Sn and optionally, less than 0.3% by weight of additional elements chosen from Sb, Pb, Ca, Mn, Cr, Ni, Zr, In, Hf or Bi. A balance of the coating includes aluminum and optionally unavoidable impurities and residual elements. A microstructure of the coating does not include Al—Zn binary phases. A coated part is also provided.

公开(公告)号：US20190169754A1

公开(公告)日：2019-06-06

申请号：US16207888

申请日：2018-12-03

Applicant: ArcelorMittal

Inventor： Tiago Machado Amorim ,  Joelle Richard ,  Eric Jacqueson ,  Audrey Lhermeroult ,  Pascale Feltin ,  Jean-Michel Lemaire ,  Luc Diez ,  Jean-Michel Mataigne

IPC: C23C28/00 ,  C23C2/06 ,  C23C2/26 ,  C23C22/53 ,  C23C22/82

Abstract: A metal sheet is provided. The metal sheet includes a substrate having two faces, each face hot dip coated with a metal coating of zinc, aluminum and magnesium. The metal coatings include between 0.1 and 20 wt % of aluminum and 0.1 and 10 wt % of magnesium. Layers of magnesium oxide or magnesium hydroxide are formed on outer surfaces of the metal coatings. The layers are altered by applying an acid solution on the outer surfaces of the metal coatings or by applying mechanical forces using a roller leveler, a brushing device, or a shot-blasting device on the outer surfaces of the metal coatings. The metal sheet also includes a layer of oil deposited directly on the outer surfaces of the metal coatings.

公开(公告)号：US20150368778A1

公开(公告)日：2015-12-24

申请号：US14766344

申请日：2013-07-08

Applicant: ARCELORMITTAL INVESTIGACION Y DESARROLLO, S.L.

Inventor： Christian Allely ,  Luc Diez ,  Tiago Machado Amorim ,  Jean-Michel Mataigne

IPC: C23C2/26 ,  C23C2/06

CPC classification number: C23C2/26 ,  C22C18/04 ,  C23C2/00 ,  C23C2/04 ,  C23C2/06 ,  C23C2/12 ,  C23C2/28 ,  C23C2/40 ,  C23C28/00 ,  C23C28/021 ,  C23C28/025 ,  C23C30/00 ,  C23C30/005 ,  Y10T428/12556 ,  Y10T428/12792 ,  Y10T428/12799 ,  Y10T428/12972 ,  Y10T428/12979 ,  Y10T428/12993

Abstract: A metal sheet including a substrate having at least one face coated by a metallic coating is provided. The metallic coating has an aluminium content by weight tAl of between 3.6 and 3.8% a magnesium content by weight tMg of between 2.7 and 3.3%. The coating has a microstructure comprising a lamellar matrix of eutectic ternary Zn/Al/MgZn2 and possibly: dendrites of Zn with an accumulated surface content exceeding 5.0%, flowers of binary eutectic of Zn/MgZn2 with an accumulated surface content less than or equal to 15.0%, dendrites of binary eutectic Zn/Al surface with an accumulated surface content of less than 1.0% islets of MgZn2 with an accumulated surface content below 1.0%.

Abstract translation: 提供了包括具有被金属涂层涂覆的至少一个面的基板的金属片。 该金属涂层的铝含量按重量计tAl为3.6至3.8％，镁含量按重量计tMg为2.7至3.3％。 该涂层具有包含共晶三元Zn / Al / MgZn2的层状基体的微观结构，并且可能：积累的表面含量超过5.0％的Zn的枝晶，积累的表面含量小于或等于的Zn / MgZn2的二元共晶花 15.0％，二元共晶Zn / Al表面的枝晶，积累的表面含量小于1.0％的MgZn2胰岛，积累的表面含量低于1.0％。