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公开(公告)号：US11370279B2
公开(公告)日：2022-06-28
申请号：US16402763
申请日：2019-05-03
申请人： ArcelorMittal
摘要： An Al-steel assembly is provided. The assembly includes an aluminum-based element and a steel element on at least one surface of the aluminum-based element. The steel element has a metal coating made of a zinc-aluminum-magnesium alloy and includes from 2.3% to 3.3% by weight of magnesium and from 3.6% to 3.9% by weight of aluminum. A coated surface of the steel element is in contact with the aluminum-based element in an assembly zone and a protective coating coats the assembly around and adjacent the assembly zone. A body-in-white, further assembly and method are also provided.
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2.发明公开公开(公告)号：US20230241865A1
公开(公告)日：2023-08-03
申请号：US18131622
申请日：2023-04-06
申请人： ArcelorMittal
IPC分类号： B32B15/01 , B23K11/11 , C21D8/02 , C21D9/46 , C22C38/02 , C22C38/04 , C22C38/06 , C23C10/28 , C25D3/12 , C25D3/22 , C25D5/12 , C25D5/50
CPC分类号： B32B15/011 , B23K11/11 , C21D8/0273 , C21D9/46 , C22C38/02 , C22C38/04 , C22C38/06 , C23C10/28 , C25D3/12 , C25D3/22 , C25D5/12 , C25D5/50
摘要： The present invention relates to a method for the manufacture of a galvannealed steel sheet including the steps of A.) coating of the steel sheet with a first coating consisting of nickel and having a thickness between 150 nm and 650 nm, the steel sheet having the following composition in weight percentage 0.10
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公开(公告)号：US11155926B2
公开(公告)日：2021-10-26
申请号：US14768350
申请日：2014-02-18
申请人： ARCELORMITTAL
摘要： A method for the production of metal sheet including a substrate having two faces, at least one of which is coated with a metal coating including between 0.1 and 10% by weight of Mg and optionally between 0.1 and 20% by weight of Al, the remainder of the metal coating being Zn. The method includes at least the steps of providing a steel substrate having two faces, depositing a metal coating on at least one face hot dipping of the substrate, solidifying the metal coating, applying onto the outer surfaces of the metal coating an aqueous solution having a pH of 7 to 13 and including a magnesium ion complexing agent, for which the dissociation constant pKd of the complexing reaction of the agent with the magnesium is greater than or equal to 2, and to the metal sheet obtainable with this method.
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公开(公告)号：US20200318252A1
公开(公告)日：2020-10-08
申请号：US16881983
申请日：2020-05-22
申请人： ArcelorMittal
摘要： A sheet includes a steel substrate; a coating covering at least one face of the steel substrate, the coating comprising zinc, magnesium and aluminum; and a zinc hydroxysulfate/zinc sulfate-based temporary protection layer applied over the coating, the temporary protection layer having a sulfur content greater than or equal to 0.5 mg/m2 and less than or equal to 30 mg/m2.
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5.发明授权公开(公告)号：US10676804B2
公开(公告)日：2020-06-09
申请号：US15314457
申请日：2015-05-28
申请人： ArcelorMittal
摘要： A steel sheet is provided with a coating providing sacrificial cathodic protection. The coating includes between 1 and 40% by weight zinc, between 0.01 and 0.4% by weight lanthanum, optionally up to 10% by weight magnesium, optionally up to 15% by weight silicon, and optionally up to 0.3% by weight, in cumulative amounts, of additional components, the remainder includes aluminum and unavoidable impurities or residual elements. A method of producing parts by hot or cold swaging and the parts which can be obtained in this way are also provided.
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公开(公告)号：US09598757B2
公开(公告)日：2017-03-21
申请号：US14766344
申请日：2013-07-08
IPC分类号： C23C2/26 , C23C2/06 , C23C2/00 , C23C2/40 , C23C2/12 , C22C18/04 , C23C2/04 , C23C28/02 , C23C30/00 , C23C2/28 , C23C28/00
CPC分类号： 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
摘要： A metal sheet including a substrate having at least one face coated by a metallic coating is provided. The metallic coating has an aluminum 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%.
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公开(公告)号：US11414737B2
公开(公告)日：2022-08-16
申请号：US15748262
申请日：2016-07-29
申请人： ARCELORMITTAL
摘要： 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%.
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公开(公告)号：US10947608B2
公开(公告)日：2021-03-16
申请号：US15765831
申请日：2016-09-30
申请人： ArcelorMittal
摘要： 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.
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公开(公告)号：US10131964B2
公开(公告)日：2018-11-20
申请号：US14672906
申请日：2015-03-30
发明人： Colin Scott , Philippe Cugy , Christian Allely
IPC分类号： C22C38/02 , C21D9/46 , C22C38/04 , C22C38/08 , C22C38/12 , C22C38/16 , C23C2/02 , C23C2/06 , C23C2/28 , C23C28/02 , C21D1/26 , C21D1/42 , C21D1/767 , C21D6/00 , C21D8/02 , C22C38/00 , C22C38/06 , B32B15/01
摘要： An austenitic steel sheet excellent in resistance to delayed cracking is provided. The composition of said steel comprises in weight: 0.35%≤C≤1.05% 15%≤Mn≤26% Si≤3% Al≤0.050% S≤0.030% P≤0.080% N≤0.1%, at least one metallic element X chosen among vanadium, titanium, niobium, molybdenum, chromium 0.050%≤V≤0.50%, 0.040%≤Ti≤0.50% 0.070%≤Nb≤0.50% 0.14%≤Mo≤2% 0.070%≤Cr≤2%. The composition may optionally include B, Ni and/or Cu. The remainder of the composition includes iron and unavoidable impurities inherent to fabrication, including hydrogen. The quantity Xp of the at least one metallic element under the form of carbides, nitrides or carbonitrides is, in weight: 0.030%≤Vp≤0.40% 0.030%≤Tip≤0.50% 0.040%≤Nbp≤0.40% 0.14%≤Mop≤0.44% 0.070%≤Crp≤0.6%. The hydrogen content Hmax designating the maximal hydrogen content that can be measured from a series of at least five specimens, and the quantity Xp, in weight, is such that: 1000 H max X P ≤ 3.3 .
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10.发明申请公开(公告)号：US20180044774A1
公开(公告)日：2018-02-15
申请号：US15552135
申请日：2016-01-22
申请人： ArcelorMittal
发明人： Christian Allely , Eric Jacqueson , Daniel Chaleix
IPC分类号： C23C14/16 , C23C14/02 , C23C14/22 , C21D9/46 , B21D53/88 , C25D3/22 , C25D5/52 , C25D13/04 , C25D13/20 , C23C10/20 , B32B15/01
CPC分类号： C23C14/16 , B21D53/88 , B32B15/012 , B32B15/017 , C21D9/46 , C21D2211/002 , C21D2211/008 , C23C2/12 , C23C2/26 , C23C2/40 , C23C10/20 , C23C14/025 , C23C14/22 , C23C14/5853 , C23C28/021 , C25D3/22 , C25D5/52 , C25D13/04 , C25D13/20
摘要： A steel sheet coated with an aluminum-based coating and a second zinc coating having a thickness less than or equal to 1.1 μm is provided. A method for preparing the coated steel sheet, a method for preparing a press-hardened part from the steel sheet, a press-hardened part, and the use of the press-hardened part are also provided.
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