公开(公告)号：US20200340124A1

公开(公告)日：2020-10-29

申请号：US16754538

申请日：2018-10-19

Applicant: ArcelorMittal

Inventor： Pascal BERTHO ,  Anirban CHAKRABORTY ,  Hassan GHASSEMI-ARMAKI ,  Christian ALLELY ,  Tiago MACHADO AMORIM ,  Daniel CHALEIX

IPC: C23C28/02 ,  C23C2/06 ,  C23C2/40 ,  C22C38/58

Abstract: Method for the manufacture of a coated steel sheet including the following successive steps A. the provision of an annealed steel sheet having the following chemical composition in weight: 0.10

公开(公告)号：US20200263289A1

公开(公告)日：2020-08-20

申请号：US16642471

申请日：2018-07-20

Applicant: ARCELORMITTAL

Inventor： Daniel CHALEIX ,  Christian ALLELY ,  Eric SILBERBERG ,  Sergio PACE ,  Lucie GAOUYAT

IPC: C23C14/16 ,  C23C14/35 ,  C23C14/34 ,  C23C14/56 ,  C23C14/02

Abstract: A coated metallic substrate including at least a first coating consisting of aluminum is provided. The first coating has a thickness between 1.0 and 4.5 μm and is directly topped by a second coating based on zinc, such second coating having a thickness between 1.5 and 9.0 μm. The thickness ratio of the first coating with respect to the second coating is between 0.2 and 1.2.

公开(公告)号：US20250087797A1

公开(公告)日：2025-03-13

申请号：US18292744

申请日：2022-06-24

Applicant: ArcelorMittal

Inventor： Pascale SANZEY ,  Christian ALLELY ,  Tarek KRIM ,  Laurence DOSDAT ,  Aurélie BESSON

IPC: H01M50/164 ,  H01M50/159 ,  H01M50/16

Abstract: A top cover of a battery pack including a metallic coated steel sheet wherein the metallic coating is topped by an organic coating and wherein the organic coating has two layers, the first layer of the organic coating in contact with the metallic coating having a thickness of 2 to 25 μm, and the second layer of the organic coating being based on polyester or polyurethane.

公开(公告)号：US20210395853A1

公开(公告)日：2021-12-23

申请号：US17463128

申请日：2021-08-31

Applicant: ArcelorMittal

Inventor： Tiago MACHADO AMORIM ,  Christian ALLELY ,  Raisa GRIGORIEVA ,  David DUSSAUSSOIS

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

Abstract: A hot formed pre-coated steel part includes a steel sheet precoated with a metallic coating and hot formed, the coating including: 2.0 to 24.0% by weight of zinc; 1.1 to 7.0% by weight of silicon; optionally from 0.5 to 3.0% 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, a content by weight of each additional element being less than 0.3% by weight, a balance being aluminum, unavoidable impurities and residual elements resulting from feeding ingots or from a passage of the steel sheet in a molten bath; and a ratio Al/Zn by weight greater than 2.9, where a microstructure in the steel after said hot forming being martensitic or martensitic-bainitic or made of at least 75% of equiaxed ferrite, 5 to 20% of martensite and bainite in an amount less than or equal to 10%.

公开(公告)号：US20180216218A1

公开(公告)日：2018-08-02

申请号：US15748262

申请日：2016-07-29

Applicant: ARCELORMITTAL

Inventor： Tiago MACHADO AMORIM ,  Christian ALLELY ,  Grégory LEUILLIER

IPC: C23C2/12 ,  C23C2/28 ,  C23C2/06 ,  C21D8/02

CPC classification number: C23C2/12 ,  C21D1/673 ,  C21D8/0257 ,  C21D2211/002 ,  C21D2211/005 ,  C21D2211/008 ,  C23C2/06 ,  C23C2/28

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：US20250034688A1

公开(公告)日：2025-01-30

申请号：US18909715

申请日：2024-10-08

Applicant: ArcelorMittal

Inventor： Anirban CHAKRABORTY ,  Hassan GHASSEMI-ARMAKI ,  Pascal BERTHO ,  Christian ALLELY

IPC: C22C38/58 ,  B23K11/11 ,  B23K35/02 ,  B23K35/28 ,  B23K35/30 ,  B23K103/04 ,  C21D1/76 ,  C21D9/46 ,  C21D9/56 ,  C22C38/02 ,  C22C38/06 ,  C22C38/44 ,  C22C38/48 ,  C22C38/50 ,  C22C38/54 ,  C23C2/02 ,  C23C2/06

Abstract: The present invention relates to a spot welded joint where a steel sheet is made by a method with steps: A. the coating of the steel sheet with a first coating consisting of nickel and having a thickness between 600 nm and 1400nm, the steel sheet having the following composition in weight: 0.10

公开(公告)号：US20240254586A1

公开(公告)日：2024-08-01

申请号：US18625591

申请日：2024-04-03

Applicant: ArcelorMittal

Inventor： Sebastian COBO ,  Christian ALLELY ,  Martin BEAUVAIS ,  Anis AOUAFI ,  Emmanuel LUCAS

IPC: C21D9/48 ,  B32B15/01 ,  C21D1/673 ,  C21D6/00 ,  C21D8/02 ,  C22C38/00 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/44 ,  C22C38/48 ,  C22C38/50 ,  C22C38/54 ,  C23C2/02 ,  C23C2/06 ,  C23C2/12 ,  C23C2/28 ,  C23C2/40

CPC classification number: C21D9/48 ,  B32B15/012 ,  B32B15/013 ,  C21D1/673 ,  C21D6/004 ,  C21D6/005 ,  C21D6/008 ,  C21D8/0205 ,  C21D8/0226 ,  C21D8/0236 ,  C21D8/0263 ,  C22C38/001 ,  C22C38/004 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/44 ,  C22C38/48 ,  C22C38/50 ,  C22C38/54 ,  C23C2/02 ,  C23C2/022 ,  C23C2/024 ,  C23C2/06 ,  C23C2/12 ,  C23C2/28 ,  C23C2/40 ,  C21D2211/002 ,  C21D2211/008

Abstract: A method for manufacture of a hot-rolled steel sheet which includes: producing a liquid steel to which manganese, silicon, niobium, and chromium are added, the additions being made in a vacuum chamber, then desulfurizing the liquid metal without increasing its nitrogen content, then adding titanium, said additions being made so as to obtain a liquid metal having a chemical composition where the titanium and nitrogen contents satisfy: Ti/N>3.42, and the carbon, manganese, chromium, and silicon contents satisfy: 2.6C+Mn/5.3+Cr/13+Si/15>=1.1%, then casting a semi-finished product, then heating said semi-finished product to a temperature between 1250° C. and 1300° C. for a holding period at this temperature between 20 minutes and 45 minutes, then hot rolling said semi-finished product to a rolling end temperature TFL between 825° C. and 950° C., to obtain a hot-rolled sheet, then coiling said hot-rolled sheet at a temperature between 500° C. and 750° C. to obtain a hot-rolled and coiled sheet, then pickling the oxide layer formed in the previous steps.

公开(公告)号：US20220298618A1

公开(公告)日：2022-09-22

申请号：US17834335

申请日：2022-06-07

Applicant: ArcelorMittal

Inventor： Christian ALLELY ,  Tiago MACHADO AMORIM ,  Joost DE STRYCKER ,  Krista Godelieve Oscar VAN DEN BERGH

IPC: C23C2/12 ,  C23C2/00 ,  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 ,  C22C21/00 ,  C22C21/08 ,  C23C2/02 ,  C22C21/14 ,  C22C21/06 ,  C23C2/26 ,  C23C2/34 ,  C22C21/16 ,  C22C21/10 ,  C23C2/40

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：US20210395855A1

公开(公告)日：2021-12-23

申请号：US17463187

申请日：2021-08-31

Applicant: ArcelorMittal

Inventor： Tiago MACHADO AMORIM ,  Christian ALLELY ,  Raisa GRIGORIEVA ,  David DUSSAUSSOIS

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

Abstract: A method for manufacture of a pre-coated steel sheet includes providing a steel sheet, coating the steel sheet with a metallic coating, the metallic coating including: 2.0 to 24.0% by weight of zinc; 1.1 to 7.0% by weight of silicon; optionally from 0.5 to 3.0% 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, a content by weight of each additional element being less than 0.3% by weight, a balance of the metallic coating being aluminum, unavoidable impurities and residual elements resulting from feeding ingots or from a passage of the steel sheet in a molten bath; a ratio Al/Zn by weight greater than 2.9, and wherein the metallic coating does not include In and the metallic coating does not include Sn

公开(公告)号：US20210395854A1

公开(公告)日：2021-12-23

申请号：US17463142

申请日：2021-08-31

Applicant: ArcelorMittal

Inventor： Tiago MACHADO AMORIM ,  Christian ALLELY ,  Raisa GRIGORIEVA ,  David DUSSAUSSOIS

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

Abstract: A pre-coated steel sheet includes a steel sheet precoated with a metallic coating, the coating including: 2.0 to 24.0% by weight of zinc; 1.1 to 7.0% by weight of silicon; optionally from 0.5 to 3.0% 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, a content by weight of each additional element being less than 0.3% by weight, a balance being aluminum, unavoidable impurities and residual elements resulting from feeding ingots or from a passage of the steel sheet in a molten bath; a ratio Al/Zn by weight greater than 2.9, wherein the coating does not include In and the coating does not include Sn.