Fe Patents (Class 428/653)
  • Patent number: 10392686
    Abstract: A Mg-containing Zn alloy coated steel including a steel and a metallic coating layer placed on a surface of the steel, in which the metallic coating layer is a layered structure of plural flat-form metal particles having a particle diameter of from 5 to 100 ?m, and a thickness of from 0.5 to 30 ?m, the composition of the metal particles include Zn from 11 to 80 mass %, Al from 3 to 80 mass %, Mg from 8 to 45 mass %, and Ca from 1 to 5 mass %, and the Zn, Al, and Mg content satisfy Zn+Al>Mg, and in which the metal particles include a quasicrystalline phase, an MgZn2 phase, and optionally a balance structure.
    Type: Grant
    Filed: September 29, 2016
    Date of Patent: August 27, 2019
    Assignee: NIPPON STEEL CORPORATION
    Inventors: Nobuyuki Shimoda, Kohei Tokuda, Kenichiro Matsumura, Yasuto Goto
  • Patent number: 10351943
    Abstract: A Mg-containing Zn alloy coated steel including a steel and a metallic coating layer placed on a surface of the steel, in which the metallic coating layer is a layered structure of plural flat-form metal particles having a particle diameter of from 5 to 100 ?m, and a thickness of from 0.5 to 30 ?m, the composition of the metal particles include Zn from 11 to 80 mass %, Al from 3 to 80 mass %, Mg from 8 to 45 mass %, and Ca from 1 to 5 mass %, and the Zn, Al, and Mg content satisfy Zn+Al>Mg, and in which the metal particles include a quasicrystalline phase, an MgZn2 phase, and optionally a balance structure.
    Type: Grant
    Filed: September 29, 2016
    Date of Patent: July 16, 2019
    Assignee: NIPPON STEEL CORPORATION
    Inventors: Nobuyuki Shimoda, Kohei Tokuda, Kenichiro Matsumura, Yasuto Goto
  • Patent number: 10323292
    Abstract: A process for producing a three-dimensionally shaped steel component from a steel sheet with a metallic coating may involve hot forming the steel sheet into the steel component. The metallic coating may involve an Fe—Al-based alloy. To protect the steel sheet or the steel component against scale formation, the Fe—Al-based alloy may be applied directly to the steel sheet by galvanic coating and/or physical vapor deposition. The coating produced in this way may contain 30-60% by weight Fe, a balance of Al, and, in some cases, 0.1-10% by weight Mg, 0.1-5% by weight Ti, 0.1-10% by weight Si, 0.1-10% by weight Li, and/or 0.1-10% by weight Ca. Before heating the coated steel sheet as part of the hot forming process, the coated steel sheet may have an Fe—Al phase is stable to above 900° C.
    Type: Grant
    Filed: April 29, 2015
    Date of Patent: June 18, 2019
    Assignees: ThyssenKrupp Steel Europe AG, ThyssenKrupp AG
    Inventors: Bernd Schuhmacher, Christian Schwerdt, Axel Schrooten, Ralf Bause
  • Patent number: 10287440
    Abstract: A steel product may include a metallic anticorrosion coating of an aluminum alloy. So that such a steel product possesses high media resistance, more particularly high acid resistance and corrosion resistance, the steel product may be immersed in a liquid-melt coating bath that includes an aluminum alloy. In addition to Aluminum and unavoidable impurities, the aluminum alloy may include at least one of 0.2-2% by weight Mn or 0.2-7% by weight Mg, 0.5-5% by weight Fe, and at least one of 0.05-0.4% by weight Ti or 0.05-0.4% by weight Zr. A method for producing such steel products may involve providing a steel product in a hot-rolled or cold-rolled state, activating a surface of the steel product to remove passive oxides, and coating the surface-activated steel product by immersion in a liquid-melt coating bath that comprises an aluminum alloy having the aforementioned composition.
    Type: Grant
    Filed: June 30, 2015
    Date of Patent: May 14, 2019
    Assignees: THYSSENKRUPP STEEL EUROPE AG, THYSSENKRUPP AG
    Inventors: Marc Blumenau, Oliver Moll, Michael Peters, Thiemo Wuttke
  • Patent number: 10106866
    Abstract: An exemplary embodiment of the present invention provides a coated steel sheet on which a magnesium-aluminum alloy coating layer is formed, including: a steel sheet; and a coating layer configured to include a first magnesium-aluminum alloy layer formed on a top surface of the steel sheet and a second magnesium-aluminum alloy layer formed on a top surface of the first magnesium-aluminum alloy layer, wherein a magnesium content of the first magnesium-aluminum alloy layer is higher than that of the second magnesium-aluminum alloy layer.
    Type: Grant
    Filed: December 17, 2014
    Date of Patent: October 23, 2018
    Assignees: POSCO, RESEARCH INSTITUTE OF INDUSTRIAL SCIENCE & TECHNOLOGY
    Inventors: Jae In Jeong, Ji Hoon Yang, Tae Yeob Kim, Yong Hwa Jung
  • Patent number: 10041139
    Abstract: A high-strength steel sheet according to the present invention comprises, by weight, 10.0-15.0% Mn, 6.0-9.0% Al, 0.5-2.0% Cr, 0.8-1.6% C, and 0.001-0.01% N, and further comprises, by weight, 0.02-0.1% V, 0.005-0.015% Nb, and 0.005-0.02% Mo, or further comprises 0.1-0.5 wt % TiAl particles. The high-strength steel sheet has a mixed structure comprising austenite and a fine k-carbide having a mean particle diameter of 10-500 nm.
    Type: Grant
    Filed: June 27, 2014
    Date of Patent: August 7, 2018
    Assignee: HYUNDAI STEEL COMPANY
    Inventors: Jun Ho Chung, Seong-Ju Kim, Hyo Dong Shin
  • Patent number: 9976203
    Abstract: A cold rolled, annealed TRIP steel sheet which has a composition including (in wt. %): C: 0.1-0.3; Mn: 4-10, Al: 0.05-5, Si: 0.05-5; and Nb: 0.008-0.1, the remainder being iron and inevitable residuals. The cold rolled sheet has an ultimate tensile strength of at least 1000 MPa, and a total elongation of at least 15%. The cold rolled sheet may have at least 20% retained austenite in its microstructure and may have greater than 50% lath-type annealed ferrite structure. The cold rolled sheet may have an ultra fine grain size of less than 5 micron for the retained austenite and ferrite.
    Type: Grant
    Filed: January 22, 2013
    Date of Patent: May 22, 2018
    Assignee: ArcelorMittal
    Inventors: Hyun Jo Jun, Narayan Subramaniam Pottore, Nina Michailovna Fonstein, Oleg N. Yakubovsky
  • Patent number: 9963758
    Abstract: Provided is a hot press-formed (HPF) member with excellent powdering resistance at the time of press forming. The HPF member includes a hot-dip coating layer containing Al on a surface of a base steel sheet. The base steel sheet includes, based on wt %, 0.18-0.25% of C, 0.1-1.0% of Si, 0.9-1.5% of Mn, 0.03% or less of P, 0.01% or less of S, 0.01-0.05% of Al, 0.05-0.5% of Cr, 0.01-0.05% of Ti, 0.001-0.005% of B, 0.009% or less of N, the balance Fe, and the other impurities. The hot-dip coating layer comprises a soft diffusion layer and a hard alloy layer. The alloy layer has a Tau phase in the range of 10-30%, in terms of area percent.
    Type: Grant
    Filed: August 29, 2016
    Date of Patent: May 8, 2018
    Assignee: POSCO
    Inventors: Il-Ryoung Sohn, Dae-Chul Bae, Heung-Yun Kim
  • Patent number: 9708683
    Abstract: Coated steel having a well defined and uniform thickness is useful and advantageous for preparing products by hot stamping. Products prepared by hot stamping such a steel are particularly advantageous when subjected to a subsequent spot welding step.
    Type: Grant
    Filed: September 15, 2012
    Date of Patent: July 18, 2017
    Assignee: ArcelorMittal France
    Inventors: Pascal Drillet, Dominique Spehner, Ronald Kefferstein
  • Patent number: 9701177
    Abstract: A ceramic coated heat exchanger component and method for making the ceramic coated heat exchanger component by creating porous metal oxide coatings on an aluminum surface of the heat exchanger component by plasma electrochemical deposition of a metal oxide on the aluminum surface and layering an odor neutralization agent on the porous metal oxide ceramic coatings to form an odor remediation ceramic coating on the heat exchanger.
    Type: Grant
    Filed: April 2, 2009
    Date of Patent: July 11, 2017
    Assignees: Henkel AG & Co. KGaA, DENSO Manufacturing Michigan, Inc.
    Inventors: Chris McDermott, Jason Amoss, Rajaram Shembekar, Shawn E. Dolan
  • Patent number: 9683604
    Abstract: Provided is a plain bearing including a backing layer, a bearing metal layer, an optional intermediate layer and an overlay. The overlay includes a plurality of sub-layers disposed one on top of the other, which sub-layers include two or more relatively soft sub-layers and one or more relatively hard sub-layer. The soft and hard sub-layers are arranged alternately with respect to one another. Each soft sub-layer includes a metal or metal alloy, and each hard sub-layer includes one or more intermetallic compound. A method of making a coated plain bearing is also provided.
    Type: Grant
    Filed: June 18, 2015
    Date of Patent: June 20, 2017
    Assignee: Daido Metal Company Ltd.
    Inventors: Yi Zhang, Madan Pal, Elena Banchelli, Ian Kerr
  • Patent number: 9518603
    Abstract: In a bearing apparatus provided herein a hard steel shaft is an opposite shaft of an Al—Sn—Si based alloy plain bearing. Its wear resistance is enhanced. The bearing apparatus comprises a steel shaft having hardness of Hv 500 or more at least on a surface thereof, and a plain bearing. The plain bearing is formed of an aluminum alloy containing 2 to 10 mass % of Si, 8 to 18 mass % Sn, and the balance being Al and unavoidable impurities, wherein the volume of Sn phase is 50% or more of the volume of the Si particles(the average particle diameter of Si of the aluminum alloy is 4 to 10 ?m). The aluminum alloy has a hardness of Hv 45 or more.
    Type: Grant
    Filed: April 22, 2011
    Date of Patent: December 13, 2016
    Assignee: TAIHO KOGYO CO., LTD.
    Inventors: Shinichiro Sakamoto, Atsushi Koyama
  • Patent number: 9493868
    Abstract: An aluminum or aluminum alloy-coated steel material includes base steel; and a coating layer formed on a surface of the base steel and containing by mass % Mg: 6% to 10%, Si: 3% to 7%, Fe: 0.2% to 2%, Mn: 0.02% to 2%, and the balance as Al and incidental impurities, wherein the coating layer has pseudoternary eutectic microstructures of ?Al—Mg2Si—(Al—Fe—Si—Mn) and an area ratio of the pseudoternary eutectic microstructures in the coating layer is at least 30%.
    Type: Grant
    Filed: December 10, 2012
    Date of Patent: November 15, 2016
    Assignees: JFE Steel Corporation, Tokyo Institute of Technology
    Inventors: Tooru Tsuru, Toshio Maruyama, Tatsuo Sato, Masao Takeyama, Masahiro Yoshida, Sakae Fujita, Sachiko Suzuki, Satoru Ando, Hiroki Nakamaru
  • Patent number: 9353424
    Abstract: A high strength steel sheet containing chemical components of, in mass %, C: 0.20 to 0.42%, Si: 0.06 to 0.5%, Mn: 0.2 to 2.2%, Cr: 0.1 to 2.5%, B: 0.0005 to 0.01%, O: 0.0020 to 0.020%, Al: 0.001 to 0.03%, Ti: 0.001 to 0.05%, N: 0.1% or less, P: 0.03% or less, S: 0.02% or less, and the balance: Fe and inevitable impurities. In steel, 5×103 pieces per mm2 or more to 1×105 pieces per mm2 or less of Mn oxides having a maximum length of 1 ?m or more to 5 ?m or less are present, and 1.7×102 pieces per mm2 or more to 5×103 pieces per mm2 or less of Mn—Si composite oxides having a short-axial length of 1 ?m or more and a longitudinal length of 10 ?m or less are present.
    Type: Grant
    Filed: March 13, 2014
    Date of Patent: May 31, 2016
    Assignee: NIPPON STEEL & SUMITOMO METAL CORPORATION
    Inventors: Hiroyuki Tanahashi, Toshimasa Tomokiyo
  • Patent number: 9302449
    Abstract: Provided is a hot dip zinc (Zn) alloy plated steel sheet having excellent corrosion resistance and surface qualities, and a method of manufacturing the same. For this purpose, provided is a high corrosion resistant hot dip Zn alloy plated steel sheet which includes an underlying steel sheet and a hot dip Zn alloy plating layer, wherein a composition of the hot dip Zn alloy plating layer includes 1 to 3 wt % of aluminum (Al), 1.5 to 4.0 wt % of magnesium (Mg), and Zn and unavoidable impurities as a remainder, in which Al+Mg is in a range of 2.5 to 7.0 wt % and Al: (Al+Mg) ratio is in a range of 0.38 to 0.48, and a method of manufacturing the high corrosion resistant hot dip Zn alloy plated steel sheet.
    Type: Grant
    Filed: December 26, 2011
    Date of Patent: April 5, 2016
    Assignee: POSCO
    Inventors: Sang-Heon Kim, Young-Sool Jin, Min-Suk Oh, Su-Young Kim, Bong-Hwan Yoo
  • Patent number: 9234267
    Abstract: There is provided a hot-dip Al—Zn coated steel sheet that has a steel sheet containing Si and Mn as a base steel sheet and has excellent coating appearance and corrosion resistance. The Al—Zn coating layer has an Al content in the range of 20% to 95% by mass. The Al—Zn coating layer has a Ca content in the range of 0.01% to 10% by mass. Alternatively, the Ca and Mg content is in the range of 0.01% to 10% by mass. A steel sheet surface layer within 100 ?m from a surface of the base steel sheet directly under the Al—Zn coating layer contains less than 0.060 g/m2 per surface of an oxide of at least one selected from Fe, Si, Mn, Al, P, B, Nb, Ti, Cr, Mo, Cu, and Ni in total.
    Type: Grant
    Filed: November 25, 2011
    Date of Patent: January 12, 2016
    Assignee: JFE Steel Corporation
    Inventors: Masahiro Yoshida, Hiroki Nakamaru
  • Patent number: 9187814
    Abstract: The hot-dip aluminum alloy plated steel has a base steel and a plated layer, in which the composition of the plated layer contains, by % by mass, Fe: 25% to 75%, Mg: 2% to 20%, and Ca: 0.02% to 2% with a remainder of Al and inevitable impurities, the plated layer contains one or both of an ?-Mg phase and an Al3Mg2 phase, and the sum of the partial volume fraction of the ?-Mg phase and the partial volume fraction of the Al3Mg2 phase in a range of a depth of 5 ?m from a surface of the plated layer is 1% to 40%.
    Type: Grant
    Filed: May 31, 2011
    Date of Patent: November 17, 2015
    Assignee: NIPPON STEEL & SUMITOMO METAL CORPORATION
    Inventors: Koichi Nose, Yasuhide Morimoto, Kohei Tokuda
  • Patent number: 9133346
    Abstract: A surface-coated aluminum and zinc plated steel sheet in accordance with the present invention includes: a plated steel sheet; a composite coating film formed by applying an aqueous surface treatment agent on the plated steel sheet and drying the aqueous surface treatment agent. The aqueous surface treatment agent contains a water dispersible resin (A), a cobalt compound (B), and water, and has a pH within a range of 7.5 to 10. The composite coating film contains the water dispersible resin (A) and the cobalt compound (B). A percentage by mass of the water dispersible resin (A) in the composite coating film is 90% or more. A mass of the composite coating film per one surface of the plated steel sheet falls within a range of 0.5 to 3.5 g/m2.
    Type: Grant
    Filed: February 28, 2013
    Date of Patent: September 15, 2015
    Assignees: NIPPON STEEL & SUMIKIN COATED SHEET CORPORATION, NIPPON STEEL & SUMITOMO METAL CORPORATION, NIHON PARKERIZING CO., LTD.
    Inventors: Nobuki Shiragaki, Tomokazu Sugitani, Hiroyuki Oyokawa, Satoru Yonetani, Hiroshi Kanai, Nobuyuki Shimoda, Ichiro Oura, Hitoshi Kikuchi
  • Patent number: 9060639
    Abstract: Cookware, such as a stock pot, fry pan, sauté pan, griddle, or grill, comprising a basic three-ply bonded composite includes two layers of an aluminum alloy, such as 3003 or the like, bonded on opposed sides to a core layer of higher purity aluminum, such as 1050, 1100, 1145, or the like, to define a three-ply composite cookware product. One or more additional layers of higher purity aluminum are bonded intermediate one or more additional layers of aluminum alloy to form five-ply, or seven-ply, or more, bonded composite cookware products. The exterior layers of aluminum alloy may also include a non-stick coating and/or an anodized coating.
    Type: Grant
    Filed: May 24, 2012
    Date of Patent: June 23, 2015
    Assignee: All-Clad Metalcrafters LLC
    Inventor: William A. Groll
  • Publication number: 20150147589
    Abstract: A rolled steel sheet or blank is provided, the composition of which comprises the elements listed below in per cent by weight: C?0.1%; 0.5%?Mn?7%; 0.5%?Si?3.5%; 0.5%<Ti?2%; 2%<Ni?7%; Al?0.10%; Cr?2%; Cu?2%; Co?2%; Mo?2%; S?0.005%; P?0.03%; Nb?0.1%; V?0.1%; B<0.005%; N?0.008%, and the silicon and titanium contents are such that: Si + Ti ? 2.5 ? % , Ti Si ? 0.3 the remainder of the composition consisting of iron and unavoidable impurities resulting from processing. A method for the fabrication of a part for a land motor vehicle from the sheet or blank by hot stamping is also provided. The microstructure of the part consisting essentially of martensite and intermetallic precipitates of type Fe2TiSi with an area percentage between 1 and 5% intermetallic precipitates.
    Type: Application
    Filed: September 6, 2011
    Publication date: May 28, 2015
    Applicant: Arcelormittal Investigacion Y Desarrollo, S.L.
    Inventors: Olivier Bouaziz, David Barbier, Coralie Jung
  • Patent number: 9040167
    Abstract: A flat steel product having a base layer of a steel material and a multilayer coating applied thereto, and a method for producing the flat steel product. The method having the following steps: providing a steel base layer; applying a zinc layer to the base layer by electrolytic coating; applying an aluminum layer to the surface of the zinc layer, wherein no treatment is made to the surface of the zinc layer in regard to the oxides and sulfides present thereon at the end of the electrolytic zinc coating step or occurring during the course of the aluminum coating step; applying a magnesium layer to the aluminum layer; and subsequently heat treating the flat steel product in such a way that an MgZn2 layer forms in the coating above the Al layer.
    Type: Grant
    Filed: May 20, 2010
    Date of Patent: May 26, 2015
    Assignee: ThyssenKrupp Steel Europe AG
    Inventors: Bernd Schuhmacher, Christian Schwerdt, Nicole Weiher, Richard Weinhold
  • Patent number: 9034480
    Abstract: There is provided a hot-dip Al—Zn coated steel sheet that has a steel sheet containing Si and Mn as a base steel sheet and has excellent coating appearance and corrosion resistance. The Al—Zn coating layer has an Al content in the range of 20% to 95% by mass. The Al—Zn coating layer has a Ca content in the range of 0.01% to 10% by mass. Alternatively, the Ca and Mg content is in the range of 0.01% to 10% by mass. A steel sheet surface layer within 100 ?m from a surface of the base steel sheet directly under the Al—Zn coating layer contains 0.06 to 1.0 g/m2 per surface of an oxide of at least one selected from Fe, Si, Mn, Al, P, B, Nb, Ti, Cr, Mo, Cu, and Ni in total.
    Type: Grant
    Filed: November 25, 2011
    Date of Patent: May 19, 2015
    Assignee: JFE Steel Corporation
    Inventors: Masahiro Yoshida, Hiroki Nakamaru
  • Publication number: 20150132603
    Abstract: A metallic coated steel strip includes a steel strip and a metallic coating on at least one side of the strip. The metallic coating includes an Al—Zn—Mg—Si overlay alloy layer and an intermediate alloy layer between the steel strip and the overlay alloy layer. The intermediate alloy layer has a composition of, by weight, 4.0-12.0% Zn, 6.0-17.0% Si, 20.0-40.0% Fe, 0.02-0.50% Mg, and balance Al and unavoidable impurities.
    Type: Application
    Filed: July 31, 2013
    Publication date: May 14, 2015
    Inventor: Qiyang Liu
  • Publication number: 20150132602
    Abstract: A method for coating a component for use in a semiconductor chamber for plasma etching includes providing a component for use in a semiconductor manufacturing chamber, loading the component into a deposition chamber, cold spray coating a metal powder onto the component to form a coating on the component, and anodizing the coating to form an anodization layer.
    Type: Application
    Filed: November 13, 2013
    Publication date: May 14, 2015
    Applicant: Applied Materials, Inc.
    Inventors: Jennifer Y. Sun, Vahid Firouzdor
  • Publication number: 20150118516
    Abstract: An alloy composite material comprising an aluminum alloy layer and a thermal spray alloy layer of 20 to 40% Mn and 47 to 76% Fe by weight in overlaying contact with the aluminum alloy layer. An alloy composite material comprising an aluminum alloy layer or base layer and a thermal spray alloy layer of 20 to 40% Mn and 47 to 76% Fe by weight in overlaying contact with the aluminum alloy layer or base layer. The aluminum alloy layer or base layer and the thermal spray alloy layer have a mechanical compatibility to each other of 20-60 MPa as determined using tests specified by ASTM-C633 test. A process of thermal spraying comprising providing a base layer and a feed stock alloy of 20 to 40% Mn and 47 to 76% Fe and thermally spraying the feed stock alloy onto the base layer to form an alloy composite material.
    Type: Application
    Filed: October 31, 2013
    Publication date: April 30, 2015
    Applicants: The Regents of the University of Michigan, Ford Global Technologies, LLC
    Inventors: James Maurice Boileau, Timothy J. Potter, Paul George Sanders, Matthew John Zaluzec, Pravansu Sekhar Mohanty, Vikram Varadarrajan
  • Patent number: 9012029
    Abstract: A method of bonding a first panel made of a first material to a second panel made of a second material is provided. The method includes creating a second panel hole in the second panel at a weld location. An insert composed of the first material is inserted into the second panel hole in the second panel. At least a portion of the insert is fittable in the second panel hole and sized to correspond to the second panel hole. The first panel and the insert are welded together at the weld location, thereby bonding the first and second panels. In one embodiment, the first and second panels are placed between the first and second electrodes of a welding gun. A force is applied to clamp the insert and the first panel between the first and second electrodes and a welding current is delivered. A bonded structure is provided.
    Type: Grant
    Filed: May 17, 2012
    Date of Patent: April 21, 2015
    Assignee: GM Global Technology Operations LLC
    Inventors: Steven C. Lang, Joseph M. Polewarczyk, Peter M. Parlow
  • Patent number: 8999084
    Abstract: A galvanized steel sheet includes a zinc plating layer which is disposed on a steel sheet containing 0.01% to 0.15% C, 0.001% to 2.0% Si, 0.1% to 3.0% Mn, 0.001% to 1.0% Al, 0.005% to 0.060% P, and 0.01% or less S on a mass basis, the remainder being Fe and unavoidable impurities, and which has a mass per unit area 20 g/m2 to 120 g/m2. An oxide of at least one selected from the group consisting of Fe, Si, Mn, Al, and P is present in a surface portion of the steel sheet that lies directly under the zinc plating layer and that extends up to 100 ?m from the surface of a base steel sheet. The amount of the oxide per unit area is 0.05 g/m2 or less in total. The steel sheet has excellent corrosion resistance, anti-powdering property during heavy machining, and strength.
    Type: Grant
    Filed: November 25, 2009
    Date of Patent: April 7, 2015
    Assignee: JFE Steel Corporation
    Inventors: Yusuke Fushiwaki, Yoshiharu Sugimoto
  • Patent number: 8986849
    Abstract: A hot stamped high strength part which is excellent in post painting anticorrosion property, which hot stamped high strength part has an alloy plating layer including an Al—Fe intermetallic compound phase on the surface of the steel sheet. The alloy plating layer is comprised from phases of a plurality of intermetallic compounds, a mean linear intercept length of crystal grains of a phase containing Al: 40 to 65 mass % among the phases of the plurality of intermetallic compounds is 3 to 20 ?m, an average value of thickness of the Al—Fe alloy plating layer is 10 to 50 ?m, and a ratio of the average value of thickness to the standard deviation of thickness of the Al—Fe alloy plating layer satisfies the following relationship: 0<standard deviation of thickness/average value of thickness?0.15.
    Type: Grant
    Filed: March 30, 2012
    Date of Patent: March 24, 2015
    Assignee: Nippon Steel & Sumitomo Metal Corporation
    Inventors: Jun Maki, Kazuhisa Kusumi, Masayuki Abe, Masao Kurosaki
  • Publication number: 20150079420
    Abstract: The steel for hot forming has the following composition in weight %: C: 0.10-0.25, Mn: 1.4-2.8, Si: ?1.0, Cr: ?1.0, Ti: ?0.05, Nb: ?0.05, V: ?0.1, Mo: ?0.1, Al: ?0.05, P: ?0.02, S: ?0.005, Ca: ?0.005, O: ?0.01, N: ?0.02, B: ?0.0004, the remainder being iron and unavoidable impurities. Also disclosed is a strip, sheet or blank produced with such a steel, a method for producing a hot formed product, such a product and the use thereof.
    Type: Application
    Filed: September 17, 2014
    Publication date: March 19, 2015
    Inventors: David Neal HANLON, Stefanus Matheus Cornelis VAN BOHEMEN
  • Patent number: 8968880
    Abstract: A method of bonding a first panel made of a first material to a second panel made of a second material is provided. The method includes creating a second panel hole in the second panel at a weld location. An insert composed of the first material is inserted into the second panel hole in the second panel. At least a portion of the insert is fittable in the second panel hole and sized to correspond to the second panel hole. The first panel and the insert are welded together at the weld location, thereby bonding the first and second panels. In one embodiment, the first and second panels are placed between the first and second electrodes of a welding gun. A force is applied to clamp the insert and the first panel between the first and second electrodes and a welding current is delivered. A bonded structure is provided.
    Type: Grant
    Filed: May 17, 2012
    Date of Patent: March 3, 2015
    Assignee: GM Global Technology Operations LLC
    Inventors: Steven C. Lang, Joseph M. Polewarczyk, Peter M. Parlow
  • Publication number: 20150050519
    Abstract: In a hot stamped steel, when [C] represents an amount of C (mass %), [Si] represents an amount of Si (mass %), and [Mn] represents an amount of Mn (mass %), an expression of 5×[Si]+[Mn])/[C]>10 is satisfied, a metallographic structure includes 80% or more of a martensite in an area fraction, and optionally, further includes one or more of 10% or less of a pearlite in an area fraction, 5% or less of a retained austenite in a volume ratio, 20% or less of a ferrite in an area fraction, and less than 20% of a bainite in an area fraction, TS×?, which is a product of TS that is a tensile strength and ? that is a hole expansion ratio is 50000 MPa·% or more, and a hardness of the martensite measured with a nanoindenter satisfies H2/H1<1.10 and ?HM<20.
    Type: Application
    Filed: January 11, 2013
    Publication date: February 19, 2015
    Inventors: Toshiki Nonaka, Satoshi Kato, Kaoru Kawasaki, Toshimasa Tomokiyo
  • Publication number: 20150024237
    Abstract: A hot stamping steel material, which secures good hydrogen embrittlement resistance even when the steel sheet after hot stamping is subjected to processing leading to remaining of stress, such as piercing and which is easily practicable, wherein the steel sheet has the chemical composition of: C: 0.18 to 0.26%; Si: more than 0.02% and not more than 0.05%; Mn: 1.0 to 1.5%; P: 0.03% or less; S: 0.02% or less; Al: 0.001 to 0.5%; N: 0.1% or less; O: 0.001 to 0.02%; Cr: 0 to 2.0%; Mo: 0 to 1.0%; V: 0 to 0.5%; W: 0 to 0.5%; Ni: 0 to 5.0%; B: 0 to 0.01%; Ti: 0 to 0.5%; Nb: 0 to 0.5%; Cu: 0 to 1.0%; and balance: Fe and impurities, in terms of % by mass, the concentration of a Mn-containing inclusion is not less than 0.010% by mass and less than 0.25% by mass, and the number ratio of a Mn oxide to the inclusion having a maximum length of 1.0 to 4.0 ?m is 10.0% or more.
    Type: Application
    Filed: March 5, 2013
    Publication date: January 22, 2015
    Inventors: Hiroyuki Tanahashi, Toshimasa Tomokiyo
  • Publication number: 20150017469
    Abstract: The invention relates to sheet steel for use as packaging steel, made of a non-alloy or low-alloy and cold-rolled steel having a carbon content of less than 0.1%. According to the invention, in order to use such sheet steel for packaging steel that has good formability and can be produced in a cost-effective way, the sheet steel contains less than 0.4 wt % of manganese, less than 0.04 wt % of silicium, less than 0.1 wt % of aluminum, and less than 0.1 wt % of chromium and is provided with a multi-phase structure, comprising ferrite and at least one of the structure constituents martensite, bainite, and/or residual austenite. The invention further relates to a method for producing such packaging steel from cold-rolled sheet steel.
    Type: Application
    Filed: October 2, 2012
    Publication date: January 15, 2015
    Inventors: Reiner Sauer, Burkhard Kaup, Dirk Matusch, Dimitrios Nouskalis
  • Publication number: 20150010775
    Abstract: A hot stamped steel according to the present invention satisfies an expression of (5×[Si]+[Mn])/[C]>11 when [C] represents an amount of C by mass %, [Si] represents an amount of Si by mass %, and [Mn] represents an amount of Mn by mass %, a metallographic structure after hot stamping includes 40% to 90% of a ferrite and 10% to 60% of a martensite in an area fraction, a total of an area fraction of the ferrite and an area fraction of the martensite is 60% or more, a hardness of the martensite measured with a nanoindenter satisfies an H2/H1<1.10 and ?HM<20, and TS×?, which is a product of a tensile strength TS and a hole expansion ratio ? is 50000 MPa·% or more.
    Type: Application
    Filed: January 11, 2013
    Publication date: January 8, 2015
    Inventors: Toshiki Nonaka, Satoshi Kato, Kaoru Kawasaki, Toshimasa Tomokiyo
  • Publication number: 20140377583
    Abstract: An aluminum or aluminum alloy-coated steel material includes base steel; and a coating layer formed on a surface of the base steel and containing by mass % Mg: 6% to 10%, Si: 3% to 7%, Fe: 0.2% to 2%, Mn: 0.02% to 2%, and the balance as Al and incidental impurities, where-in the coating layer has pseudoternary eutectic microstructures of ?Al—Mg2Si—(Al—Fe—Si—Mn) and an area ratio of the pseudoternary eutectic microstructures in the coating layer is at least 30%.
    Type: Application
    Filed: December 10, 2012
    Publication date: December 25, 2014
    Applicants: JFE Steel Corporation, Tokyo Institute of Technology
    Inventors: Tooru Tsuru, Toshio Maruyama, Tatsuo Sato, Masao Takeyama, Masahiro Yoshida, Sakae Fujita, Sachiko Suzuki, Satoru Ando, Hiroki Nakamaru
  • Publication number: 20140370329
    Abstract: When the amount of C, the amount of Si and the amount of Mn are respectively represented by [C], [Si] and [Mn] in unit mass %, the cold rolled steel sheet satisfies a relationship of (5×[Si]+[Mn])/[C]>10, the metallographic structure contains, by area ratio, 40% to 90% of a ferrite and 10% to 60% of a martensite, further contains one or more of 10% or less of a pearlite by area ratio, 5% or less of a retained austenite by volume ratio and 20% or less of a bainite by area ratio, the hardness of the martensite measured using a nanoindenter satisfies H20/H10<1.10 and ?HM0<20, and TS×? representing the product of TS that is a tensile strength and ? that is a hole expansion ratio is 50000 MPa·% or more.
    Type: Application
    Filed: January 11, 2013
    Publication date: December 18, 2014
    Inventors: Toshiki Nonaka, Satoshi Kato, Kaoru Kawasaki, Toshimasa Tomokiyo
  • Patent number: 8911879
    Abstract: The present invention provides a Zn—Al—Mg—Cr alloy-coated steel material with excellent corrosion resistance. A molten Zn—Al—Mg—Si—Cr alloy-coated steel material which is a steel material having a Zn—Al—Mg—Cr alloy coating layer and which has an interfacial alloy layer formed of coating layer components and Fe at the coating layer-steel material interface, wherein the interfacial alloy layer has a multilayer structure consisting of an Al—Fe-based alloy layer and an Al—Fe—Si-based alloy layer and furthermore, the Al—Fe—Si-based alloy layer contains Cr.
    Type: Grant
    Filed: January 14, 2010
    Date of Patent: December 16, 2014
    Assignee: Nippon Steel & Sumitomo Metal Corporation
    Inventors: Nobuyuki Shimoda, Yasuhide Morimoto
  • Publication number: 20140363694
    Abstract: A low density high strength steel sheet including 0.15% to 0.25% C, 2.5% to 4% Mn, 0.02% or less P, 0.015% or less S, 6% to 9% Al and 0.01% or less N, the balance being iron and inevitable impurities, wherein 1.7·(Mn—Al)+52.7·C is at least 3 and at most 4.5. A method of producing the low density and high strength steel sheet.
    Type: Application
    Filed: February 21, 2012
    Publication date: December 11, 2014
    Applicant: TATA STEEL NEDERLAND TECHNOLOGY BV
    Inventors: Cheng Liu, Radhakanta Rana
  • Patent number: 8895153
    Abstract: Disclosed is a chemical conversion coated Al-plated steel sheet which has excellent weather resistance, water resistance and coating film adhesion. Specifically, a chemical conversion coating liquid is applied over and dried on the surface of an Al alloy-plated steel sheet, thereby forming a chemical conversion coating film that has a film thickness of 0.5-10 ?m. The chemical conversion coating liquid contains: a fluorine-containing olefin resin, which contains 7-20% by mass of F atoms and 0.05-5% by mass of hydrophilic functional groups that are selected from among a carboxyl group, a sulfonic acid group and salts of carboxyl group and sulfonic acid group and has a number average molecular weight within the range of 1,000-2,000,000; and an oxygen acid salt, fluoride, hydroxide, organic acid salt, carbonate or peroxygenated salt of a group 4A metal.
    Type: Grant
    Filed: June 17, 2011
    Date of Patent: November 25, 2014
    Assignee: Nisshin Steel Co., Ltd.
    Inventors: Masanori Matsuno, Koichiro Ueda, Masaya Yamamoto, Hirofumi Taketsu
  • Publication number: 20140329108
    Abstract: In a first aspect, the invention provides aluminium alloy comprising the following composition, all values in weight %: Si 0.25-1.5 Cu 0.3-1.5 Fe up to 0.5 Mn up to 0.1 all other elements including Mg being incidental and present (if at all) then in an amount less than or equal to 0.05 individually, and less than or equal to 0.15 in aggregate, the balance being aluminium. In a second aspect, the invention provides a composite aluminium sheet product comprising a core layer and at least one clad layer wherein the at least one clad layer is an aluminium alloy comprising the following composition, all values in weight %: Si 0.25-1.5 Cu 0.3-1.5 Fe up to 0.5 Mn up to 0.1 all other elements including Mg being incidental and present (if at all) then in an amount less than or equal to 0.05 individually, and less than or equal to 0.15 in aggregate, the balance being aluminium.
    Type: Application
    Filed: November 9, 2012
    Publication date: November 6, 2014
    Applicant: NOVELIS INC.
    Inventors: Cyrille Bezencon, Corrado Bassi, Frank Schellinger
  • Patent number: 8851319
    Abstract: This invention relates to a cooking article (1) including a metal dish (2) having a base area (20), a concave internal face (21) intended to be arranged on the side of the food to be placed in said article (1) and a convex external face (22) intended to be arranged toward a heat source, and an external coating (3) covering said external face (22), characterized in that said external coating (3) includes between 30% and 50% by weight, with respect to the entire weight of said coating (3), of at least one polyimide having a glass transition temperature Tg equal to or above 250° C. This invention also relates to a process for producing such an article (1).
    Type: Grant
    Filed: December 19, 2008
    Date of Patent: October 7, 2014
    Assignee: SEB SA
    Inventors: Aurélien Berrux, Pierre-Jean Muller, Jean-Luc Perillon
  • Publication number: 20140248510
    Abstract: Friction stir welding is performed in the following manner. In the state in which a probe is rotated in a predetermined rotation direction, the probe is inserted into a flange of a rear sub frame, thereby starting friction stir welding to weld the flange of the rear sub frame and a flange of a front sub frame positioned on the inner side of the rear side of a vehicle. The probe is sequentially moved along the direction of arrow R1?arrow R2 (predetermined direction). When the probe reaches the end point of the direction indicated by arrow R2, the probe is inserted into the flange on the outer side across a protruding portion disposed between the flanges. Then, the probe is sequentially moved in the direction of arrow R4?arrow R5?arrow R6, which is opposite to the direction of arrow R1?arrow R2.
    Type: Application
    Filed: September 3, 2013
    Publication date: September 4, 2014
    Applicant: HONDA MOTOR CO., LTD
    Inventors: Mitsuru Sayama, Tetsuya Miyahara, Shosuke Ohhama, Tsutomu Kobayashi
  • Publication number: 20140227553
    Abstract: Disclosed are a preparation method of a steel product capable of local reinforcement using laser heat treatment, and a heat hardened steel used in the method. According to the present invention, the preparation method of a steel part comprises the following steps: (a) preparing a material comprising 0.1-0.5 wt % of C, 0.1-0.5 wt % of Si, 0.5-3.0 wt % of Mn, 0.1 wt % or less of P, 0.05 wt % or less of S, 0.01-1.0 wt % of Cr, 0.1 wt % or less of Al, 0.2 wt % or less of Ti, 0.0005-0.08 wt % of B, and the balance of Fe and inevitable impurities; (b) preparing a formed product by forming the material into a predetermined shape; and (c) locally reinforcing the high strength portion by carrying out laser heat treatment on a portion requiring high strength at the formed product.
    Type: Application
    Filed: October 17, 2011
    Publication date: August 14, 2014
    Applicant: HYUNDAI HYSCO
    Inventors: Hee-Joong Im, Seung-Man Nam, Bo-Ryong Lee, Kyung-Bo Kim, Youn-Il Jung
  • Patent number: 8802242
    Abstract: A clad plate includes an aluminum plate and a hard metal plate joined together at side end surfaces thereof. Side end surfaces of an aluminum plate and a hard metal plate are jointed together via a nickel layer by pressure welding. A ridge and a groove formed in the side end surface of the aluminum plate are respectively engaged and joined, via the nickel layer, to a groove and a ridge formed in the side end surface of the hard metal plate, and an end portion of the nickel layer extends beyond the rear end portion of the side end surface of the aluminum plate and is jointed to the plate surface of the aluminum plate with the end portion exposed thereon. The average width W of the exposed portion of the nickel layer exposed on the plate surface is preferably from about 0.2 mm to about 1.5 mm.
    Type: Grant
    Filed: January 8, 2010
    Date of Patent: August 12, 2014
    Assignee: Neomax Materials Co., Ltd.
    Inventors: Yoshimitsu Oda, Masaaki Ishio, Toshiaki Fujita
  • Patent number: 8795845
    Abstract: Methods for the low-temperature synthesis of an integrated, corrosion-resistant coating structure for metal substrates by means of multi-component pack cementation are provided. The synthesis of the integrated coating structures at low temperatures can avoid or minimize degradation of the mechanical properties of the substrates. The integrated coating structures can increase the lifetime of high temperature steels under severe steam environments and, therefore, provide a technological enabler for the high-temperature operation of steam power generation plants.
    Type: Grant
    Filed: November 10, 2008
    Date of Patent: August 5, 2014
    Assignee: Wisconsin Alumni Research Foundation
    Inventors: John Harry Perepezko, Ridwan Sakidja
  • Publication number: 20140205857
    Abstract: The present invention relates to aluminum plated steel sheet which does not require coating after plating and is high in production flexibility enabling application of conventional production processes as they are or exhibits excellent corrosion resistance to flex fuels and further is excellent in appearance and to fuel tanks characterized by being produced using the steel sheet. The means for solving this is characterized by defining the Si, Mg, Ca, and Ti ingredients in the aluminum plating layer and controlling the cooling method after hot dip aluminum coating so as to make Mg2Si particles with a long axis of 10 ?m or less and an aspect ratio of 1 to 3 finely disperse in the plating layer. Due to the Mg2Si particles, it is possible to give an excellent corrosion resistance to flex fuels and suppress the deterioration in appearance due to MgO.
    Type: Application
    Filed: July 14, 2011
    Publication date: July 24, 2014
    Inventors: Yasuto Goto, Masao Kurosaki, Shinichi Yamaguchi, Jun Maki
  • Patent number: 8771838
    Abstract: The invention relates to a sliding bearing element comprising a supporting layer, an aluminum alloy-based intermediate layer, and an aluminum alloy-based bearing metal layer. The aluminum alloy composition of the intermediate layer includes at least the following components in percent by weight: 3.5 to 4.5 of copper; 0.1 to 1.5% of manganese; 0.1 to 1.5% of magnesium; and 0.1 to 1.0% of silicon.
    Type: Grant
    Filed: April 26, 2010
    Date of Patent: July 8, 2014
    Assignee: Federal-Mogul Wiesbaden GmbH
    Inventors: Thomas Grooteboer, Karl-Heinz Lindner, Karl-Heinz Lebien
  • Patent number: 8771839
    Abstract: A composite material includes a clad material including a base material that includes an iron-chromium alloy and vibration-damping layers that are provided on both surfaces of the base material and include a metal to suppress a vibration. A total thickness of the vibration-damping layers provided on the both surfaces of the base material is in a range of not less than 10% and not more than 40% relative to a total thickness of the clad material.
    Type: Grant
    Filed: January 16, 2013
    Date of Patent: July 8, 2014
    Assignee: Hitachi Metals, Ltd.
    Inventors: Kazuma Kuroki, Hiromitsu Kuroda, Tetsuya Tokumitsu
  • Publication number: 20140186653
    Abstract: A turbine component having a low residual stress ferromagnetic damping coating. The ferromagnetic damping coating may include a ferromagnetic damping material applied in at least partially molten powder form, which may be directed at a surface of the substrate at an application velocity so that it causes partial plastic deformation of the surface while adhering to the surface of the substrate and solidifying in less than 3 seconds to create a ferromagnetic damping coating, resulting in a coated substrate. The ferromagnetic damping coating has a balanced coating residual stress, including a tensile quenching stress component and a compressive peening stress component. The balanced coating residual stress is within a range of ±50 MPa without having to subject the coated substrate to a high temperature annealing process. The resulting coated substrate exhibits a high damping capacity.
    Type: Application
    Filed: March 10, 2014
    Publication date: July 3, 2014
    Inventor: Mo-How Herman Shen
  • Patent number: RE44940
    Abstract: Hot-rolled steel sheet which then can be cold-rolled, coated, the steel in the sheet having the following composition by weight: 0.15%<carbon<0.5% 0.5%<manganese<3% 0.1%<silicon<0.5% 0.01%<chromium<1% titanium<0.2% aluminum<0.1% phosphorus<0.1% sulfur<0.05% 0.0005%<boron<0.08%, the remainder being iron and impurities inherent in processing, the shoot ensuring a very high mechanical resistance after thermal treatment and the aluminum-based coating ensuring a high resistance to corrosion.
    Type: Grant
    Filed: April 15, 2013
    Date of Patent: June 10, 2014
    Assignees: ArcelorMittal France, ArcelorMittal Atlantique et Lorraine
    Inventors: Jean-Pierre Laurent, Jean-Paul Hennechart, Dominique Spehner, Jacques Devroc