Fe Patents (Class 428/653)
  • Patent number: 12241162
    Abstract: An aluminum-iron-plated steel sheet including a base steel sheet and an aluminum-based plating layer on a surface of the base steel sheet. The aluminum-based plating layer includes an alloyed layer on the surface of the base steel sheet and an aluminum layer on the alloyed layer. The alloyed layer may be formed of one or more of Fe3Al, FeAl(Si), Fe2Al5, and FeAl3. A thickness of the alloyed layer may be 90% or more of a thickness of the aluminum-based plating layer. A surface fraction of Ti may be 2% or less and a surface fraction of Zn may be 1% or less, as observed on the surface of the aluminum-based plating layer.
    Type: Grant
    Filed: December 17, 2020
    Date of Patent: March 4, 2025
    Assignee: POSCO
    Inventors: Jin-Keun Oh, Seong-Woo Kim, Sang-Heon Kim, Hyo-Sik Chun
  • Patent number: 12241161
    Abstract: Provided are an aluminum-zinc alloy plated steel sheet having excellent hot workability and corrosion resistance, and a method for manufacturing same. The plated steel sheet has an Al—Zn hot-dip aluminized coating layer on a base steel sheet, wherein: the coating layer is composed of a lower layer part and an upper layer part; the lower layer part comprises 40-50% of Fe, 50-60% of Al, 1% or less of Si, and other unavoidable impurities, on the basis of wt % of the lower layer part itself; the upper layer part comprises 10-30% of Zn, the balance of Al, and 0.05% or less of at least one of Cr, Mo, and Ni as an impurity, on the basis of wt % of the upper layer part itself; and the thickness of the upper layer part accounts for 30% or less of the total thickness of the coating layer.
    Type: Grant
    Filed: August 23, 2019
    Date of Patent: March 4, 2025
    Assignee: POSCO CO., LTD
    Inventors: Suk-Kyu Lee, Il-Jeong Park, Myung-Soo Kim
  • Patent number: 12234538
    Abstract: This aluminum-plated steel sheet has a steel sheet and a plating layer formed on a surface of the steel sheet, the plating layer contains one or more A group elements selected from a group consisting of Be, Mg, Ca, Sr, Ba, Sc, Ti, V, Cr, Mn, Fe, Co, Ni, Cu, and Zn, a remainder of Al, Fe, and impurities, a thickness t of the plating layer is 10 to 60 ?m, and an average grain size is 2t/3 or less and 15 ?m or less in a thickness range from an outermost surface of the plating layer to a ? thickness t position.
    Type: Grant
    Filed: November 29, 2019
    Date of Patent: February 25, 2025
    Assignee: NIPPON STEEL CORPORATION
    Inventors: Yuki Suzuki, Soshi Fujita, Masahiro Fuda, Hideaki Irikawa, Takeshi Imai, Fumio Eihara
  • Patent number: 12173407
    Abstract: Red rust staining of Al/Zn coated steel strip in “acid rain” or “polluted” environments can be minimised by forming the coating as an Al—Zn—Si—Mg alloy coating with an OT:SDAS ratio greater than a value of 0.5:1, where OT is the overlay thickness on a surface of the strip and SDAS is the measure of the secondary dendrite arm spacing for the Al-rich alpha phase dendrites in the coating. Red rust staining in “acid rain” or “polluted” environments and corrosion at cut edges in marine environments can be minimised in Al—Zn—Si—Mg alloy coatings on steel strip by selection of the composition (principally Mg and Si) and solidification control (principally by cooling rate) and forming Mg2Si phase particles of a particular morphology in interdendritic channels.
    Type: Grant
    Filed: August 8, 2023
    Date of Patent: December 24, 2024
    Assignee: Bluescope Steel Limited
    Inventors: Ross McDowall Smith, Qiyang Liu, Bryan Andrew Shedden, Aaron Kiffer Neufeld, Joe Williams, David James Nolan, Wayne Renshaw
  • Patent number: 12163231
    Abstract: A plated steel sheet for hot stamping according to one aspect of the present invention includes a steel sheet, a plating layer formed on either surface or both surfaces of the steel sheet and having an Al content of 60 mass % or more, and a surface film layer formed on the plating layer. A thickness t of the plating layer is 10 to 60 ?m. An average crystal grain diameter of the plating layer in a thickness range from an interface between the plating layer and the surface film layer to a position at ? of the thickness t is 2t/3 or less and 15.0 ?m or less. A surface film layer contains particles containing one or more elements selected from A group elements consisting of Sc, V, Mn, Fe, Co, Ce, Nb, Mo, and W. A total content of the A group elements is 0.01 to 10.0 g/m2. An average grain diameter of the particles containing the A group elements is 0.05 to 3.0 ?m.
    Type: Grant
    Filed: November 29, 2019
    Date of Patent: December 10, 2024
    Assignee: NIPPON STEEL CORPORATION
    Inventors: Yuki Suzuki, Soshi Fujita, Jun Maki, Kazuhisa Kusumi, Masahiro Fuda
  • Patent number: 12151453
    Abstract: A component for an electronic device can include a part including a first metal and a second metal diffusion bonded to the first metal. The first metal can be aluminum and the second metal can be different from the first metal. A porous aluminum oxide layer can overlie a portion of the first metal and can be disposed adjacent to an interface between the first metal and the second metal. The component can further include a non-metallic material bonded to the part and extending into pores defined by the porous aluminum oxide layer.
    Type: Grant
    Filed: March 11, 2022
    Date of Patent: November 26, 2024
    Assignee: APPLE INC.
    Inventors: James A. Curran, Isabel Yang, Todd S. Mintz
  • Patent number: 12140121
    Abstract: A wind turbine gearbox, in particular planetary gearbox, has at least one gear which is mounted on an axle, wherein a sliding surface is arranged between the gear and the axle. The sliding surface is arranged on at least one layer of a deposition welded material made from a sliding bearing material. Furthermore, a method produces the wind turbine gearbox.
    Type: Grant
    Filed: March 23, 2023
    Date of Patent: November 12, 2024
    Assignee: Miba Gleitlager Austria GmbH
    Inventors: Johannes Sebastian Hoelzl, Werner Schroettenhamer
  • Patent number: 12123071
    Abstract: A hot-rolled (HR) strip steel with high flangeability at ultra-high strength levels with a high total elongation, bendability and toughness values, and a method of manufacturing the hot-rolled steel and use thereof.
    Type: Grant
    Filed: February 11, 2021
    Date of Patent: October 22, 2024
    Assignee: TATA STEEL IJMUIDEN B.V.
    Inventor: Radhakanta Rana
  • Patent number: 12065193
    Abstract: A shock absorbing member which can increase impact absorption energy and also enables thinning of a steel sheet that is a starting material, a method for producing the shock absorbing member, and a method for producing a steel sheet for cold plastic working are provided. The shock absorbing member includes a ridge portion formed in a curved shape as viewed from a longitudinal direction, and a wall portion extending from the ridge portion. In the wall portion, a ratio ?5/?5 between a tensile stress ?5 when an elongation in a tensile test is 5% and a shear stress ?5 when a shear strain in a shear test is 5?3% is 1.70 or less, or a ratio ?10/?10 between a tensile stress ?10 when an elongation in a tensile test is 10% and a shear stress ?10 when a shear strain in a shear test is 10?3% is 1.70 or less.
    Type: Grant
    Filed: June 26, 2020
    Date of Patent: August 20, 2024
    Assignee: NIPPON STEEL CORPORATION
    Inventors: Mai Nagano, Shigeru Yonemura, Akihiro Uenishi
  • Patent number: 12036605
    Abstract: A method for manufacturing an additively manufactured article, the method comprising subjecting a powder material comprising a first powder containing a precipitation hardening stainless steel and a second powder containing titanium carbide to weaving irradiation with a laser beam to melt and solidify the powder material, thereby laminating at least one hardened clad layer on a base material. In the step for laminating the clad layer, the following requirements are satisfied: 20?A?35, 1.1?B?1.3, and (40% by mass)?R2?(65% by mass). In the formulae, A represents a laser heat input index, B represents a powder feeding rate index, and R2 represents a content ratio of the second powder in the powder material.
    Type: Grant
    Filed: February 17, 2021
    Date of Patent: July 16, 2024
    Assignee: Kobe Steel, Ltd.
    Inventor: Eisuke Kurosawa
  • Patent number: 12011902
    Abstract: The present invention relates to a method for the manufacture of a hot-dip coated steel sheet coated with a zinc or an aluminum based coating including the provision of a specific steel sheet, a recrystallization annealing with specific heating, soaking and cooling sub-steps using an inert gas and a hot-dip coating; the hot dip coated steel sheet and the use of the hot-dip coated steel sheet.
    Type: Grant
    Filed: January 23, 2023
    Date of Patent: June 18, 2024
    Assignee: ArcelorMittal
    Inventors: David Zapico Alvarez, Florence Bertrand, Joris Giroux
  • Patent number: 11992867
    Abstract: A hot stamped body comprising a steel base material and an Al—Zn—Mg-based plating layer formed on a surface of the steel base material, wherein the plating layer has a predetermined chemical composition, the plating layer comprises an interfacial layer positioned at an interface with the steel base material and containing Fe and Al and a main layer positioned on the interfacial layer, the main layer comprises, by area ratio, 10.0 to 90.0% of an Mg—Zn containing phase, 5.0 to less than 30.0% of an Fe—Al containing phase, and 2.0 to 25.0% of an Al—Si containing oxide phase, the Mg—Zn containing phase comprises at least one selected from the group consisting of an MgZn phase, Mg2Zn3 phase, and MgZn2 phase, and the Fe—Al containing phase comprises at least one of an FeAl phase and Fe—Al—Zn phase.
    Type: Grant
    Filed: February 27, 2020
    Date of Patent: May 28, 2024
    Assignee: NIPPON STEEL CORPORATION
    Inventors: Takuya Mitsunobu, Takehiro Takahashi, Jun Maki
  • Patent number: 11970955
    Abstract: A metal core for hot-forming a titanium-based alloy metal component is disclosed. The metal core has on an outer surface, intended to come into contact with the metal component, a layer of metal carbonitride-enriched material. The metal core comprises a nickel- or cobalt-based alloy. The metal core comprising a steel coating having an outer surface intended to come into contact with the metal component, the steel coating having a layer of metal carbonitride-enriched material. Processes for manufacturing and regenerating the metal core and a process for hot-forming a metal component using the metal core are also disclosed.
    Type: Grant
    Filed: June 18, 2020
    Date of Patent: April 30, 2024
    Assignee: SAFRAN AIRCRAFT ENGINES
    Inventors: Gilles Charles Casimir Klein, Dominique Michel Serge Magnaudeix
  • Patent number: 11881549
    Abstract: An electrochemical electrode and method for making same that provides enhanced characteristics for use in biosensors, such as blood glucose sensors. The electrode comprises a substrate, a conductive layer deposited on the substrate, and a resistive material layer deposited on the conductive layer. The conductive layer comprises nickel and chromium, and the resistive material layer comprises carbon and a carbon-nitrogen species.
    Type: Grant
    Filed: June 5, 2018
    Date of Patent: January 23, 2024
    Assignee: Eastman Chemical Company
    Inventors: Dennis Lee Ashford, II, Daniel Patrick Puzzo, Spencer Erich Hochstetler
  • Patent number: 11827964
    Abstract: A coated steel member includes: a steel sheet substrate containing, as a chemical composition, by mass %, C: 0.25% to 0.65%, Si: 0.10% to 1.00%, Mn: 0.30% 1.00%, P: 0.050% or less, S: 0.0100% or less, N: 0.010% or less, Ti: 0.010% to 0.100%, B: 0.0005% to 0.0100%, Nb: 0.02% to 0.10%, Mo: 0.10% to 1.00%, Cu: 0.15% to 1.00%, and Ni: 0.05% to 0.25%; and a coating formed on a surface of the steel sheet substrate and containing Al and Fe. The maximum Cu content in a range from the surface to a depth of 5.0 ?m is 150% or more of the Cu content of the steel sheet substrate.
    Type: Grant
    Filed: November 20, 2020
    Date of Patent: November 28, 2023
    Assignee: NIPPON STEEL CORPORATION
    Inventor: Shinichiro Tabata
  • Patent number: 11807941
    Abstract: Red rust staining of Al/Zn coated steel strip in “acid rain” or “polluted” environments can be minimised by forming the coating as an Al—Zn—Si—Mg alloy coating with an OT:SDAS ratio greater than a value of 0.5:1, where OT is the overlay thickness on a surface of the strip and SDAS is the measure of the secondary dendrite arm spacing for the Al-rich alpha phase dendrites in the coating. Red rust staining in “acid rain” or “polluted” environments and corrosion at cut edges in marine environments can be minimised in Al—Zn—Si—Mg alloy coatings on steel strip by selection of the composition (principally Mg and Si) and solidification control (principally by cooling rate) and forming Mg2Si phase particles of a particular morphology in interdendritic channels.
    Type: Grant
    Filed: October 14, 2022
    Date of Patent: November 7, 2023
    Assignee: Bluescope Steel Limited
    Inventors: Ross McDowall Smith, Qiyang Liu, Bryan Andrew Shedden, Aaron Kiffer Neufeld, Joe Williams, David James Nolan, Wayne Renshaw
  • Patent number: 11667988
    Abstract: The present invention relates to a hot stamped component, a precoated steel sheet used for hot stamping, and a hot stamping process. The hot stamped component of the present invention is provided with a coating of aluminium or an aluminium alloy on at least one surface of the base steel, the coating is produced by interdiffusion between the base steel and a precoating of aluminium or aluminium alloy, and the coating has a thickness of 6 to 26 ?m.
    Type: Grant
    Filed: June 17, 2022
    Date of Patent: June 6, 2023
    Assignee: Ironovation Materials Technology Co., Ltd.
    Inventors: Hongliang Yi, Zhiyuan Chang, Zhaoyuan Liu, Dapeng Yang, Xiaochuan Xiong
  • Patent number: 11629428
    Abstract: A metal article comprises two metals, and a first hole and an oxide layer are set correspondingly on the surfaces of the two metals. To avoid the electrolytic corrosion on the interface between the two metals during the formation of the first hole, the disclosure provides a method of manufacturing the metal article. By putting a metal substrate in a first electrolyte including an etching agent and a passivating agent and applying electricity on the metal substrate, the metal article with the first hole is formed without electrolytic corrosion. The disclosure also provides a metal composite, which is formed by setting a material part in the first hole of the metal article.
    Type: Grant
    Filed: May 27, 2021
    Date of Patent: April 18, 2023
    Assignee: Fulian Yuzhan Precision Technology Co., Ltd
    Inventors: Kar-Wai Hon, Ching-Hao Yang, Hao Zhou, Dong-Xu Zhang
  • Patent number: 11609205
    Abstract: A biosensor component that provides enhanced characteristics for use in biosensors, such as blood glucose sensors. The biosensor component comprises a substrate, and a composite layer deposited on the substrate. The composite layer includes a conductive metal component and a resistive material component, where the conductive metal component comprises one or more non-noble metals, and where the resistive material component in the composite layer is present in an amount greater than 20 atomic percent.
    Type: Grant
    Filed: May 20, 2019
    Date of Patent: March 21, 2023
    Assignee: Eastman Chemical Company
    Inventors: Spencer Erich Hochstetler, Dennis Lee Ashford, II, Senthil Nathan Sambandam
  • Patent number: 11549167
    Abstract: A steel plate plated with an aluminum-iron alloy for hot press forming can include a base steel sheet and an alloy plated layer formed on the base steel sheet. The alloy plated layer can include an alloyed layer (I) formed on the base steel sheet and containing, by weight, Al: 5-30%; an alloyed layer (II) formed on the alloyed layer (I) and containing, by weight, Al: 30-60%; and an alloyed layer (III) formed on the alloyed layer (II) and containing, by weight, Al: 20-50%. The alloy layer (II) can have a FeAl (Si) alloy phase dispersed and distributed therein, in which the FeAl (Si) alloy phase includes, by weight, Al: 20-50% and Si: 5-20%, and the number density of the FeAl (Si) alloy phase having a circle-equivalent diameter of 5 ?m or less 15 is 103/mm2 or more.
    Type: Grant
    Filed: November 29, 2019
    Date of Patent: January 10, 2023
    Assignee: POSCO
    Inventors: Seong-Woo Kim, Jin-Keun Oh, Sang-Heon Kim, Yeol-Rae Cho
  • Patent number: 11535916
    Abstract: An aluminum-based plated steel sheet according to an aspect of the present invention includes: a base material; an aluminum-based plating layer located above the base material; and an intermetallic compound layer that is located between the base material and the aluminum-based plating layer and contains an intermetallic compound of Al and Fe, in which the base material has a chemical component within a predetermined range, the aluminum-based plating layer contains, on average, 80 mass % or more and 97 mass % or less of Al, 3 mass % or more and 15 mass % or less of Si, 0 mass % or more and 5 mass % or less of Zn, 0 mass % or more and 5 mass % or less of Fe, 0 mass % or more and 3 mass % or less in total of one or more selected from the group consisting of Mg and Ca, and impurities so that a total amount thereof is 100 mass %, an average value of a thickness of the intermetallic compound layer is 2 ?m or more and 10 ?m or less, a maximum value of the thickness of the intermetallic compound layer is 10 ?m or mor
    Type: Grant
    Filed: December 5, 2018
    Date of Patent: December 27, 2022
    Assignee: NIPPON STEEL CORPORATION
    Inventors: Soshi Fujita, Yuki Suzuki, Masahiro Fuda, Jun Maki, Hideaki Irikawa, Takashi Aramaki, Tatsuya Kubota
  • Patent number: 11512377
    Abstract: Red rust staining of Al/Zn coated steel strip in “acid rain” or “polluted” environments can be minimised by forming the coating as an Al—Zn—Si—Mg alloy coating with an OT:SDAS ratio greater than a value of 0.5:1, where OT is the overlay thickness on a surface of the strip and SDAS is the measure of the secondary dendrite arm spacing for the Al-rich alpha phase dendrites in the coating. Red rust staining in “acid rain” or “polluted” environments and corrosion at cut edges in marine environments can be minimised in Al—Zn—Si—Mg alloy coatings on steel strip by selection of the composition (principally Mg and Si) and solidification control (principally by cooling rate) and forming Mg2Si phase particles of a particular morphology in interdendritic channels.
    Type: Grant
    Filed: September 9, 2020
    Date of Patent: November 29, 2022
    Assignee: Bluescope Steel Limited
    Inventors: Ross McDowall Smith, Qiyang Liu, Bryan Andrew Shedden, Aaron Kiffer Neufeld, Joe Williams, David James Nolan, Wayne Renshaw
  • Patent number: 11491764
    Abstract: The present invention provides an iron-aluminum-based plated steel sheet, and a manufacturing method therefor, the iron-aluminum-based plated steel sheet comprising a base steel sheet and a plated layer formed on the surface of the base steel sheet, wherein the alloy plated layer comprises: a diffusion layer comprising an Fe—Al-based intermetallic compound having a cubic structure; and an alloyed layer formed on the diffusion layer and composed of an alloy phase differing from that of the cubic structure, the thickness of the diffusion layer is 3-20 ?m, and the thickness of the diffusion layer is greater than 50% of the total thickness of the plated layer.
    Type: Grant
    Filed: November 29, 2019
    Date of Patent: November 8, 2022
    Assignee: POSCO
    Inventors: Jin-Keun Oh, Seong-Woo Kim, Sang-Heon Kim, Yeol-Rae Cho
  • Patent number: 11462723
    Abstract: Presented are electrochemical devices with copper-free electrodes, methods for making/using such devices, and lithium alloy-based electrode tabs and current collectors for rechargeable lithium-class battery cells. A method of manufacturing copper-free electrodes includes feeding an aluminum workpiece, such as a strip of aluminum sheet metal, into a masking device. The masking device then applies a series of dielectric masks, such as strips of epoxy resin or dielectric tape, onto discrete areas of the workpiece to form a masked aluminum workpiece with masked areas interleaved with unmasked areas. The masked workpiece is then fed into an electrolytic anodizing solution, such as sulfuric acid, to form an anodized aluminum workpiece with anodized surface sections on the unmasked areas interleaved with un-anodized surface sections underneath the dielectric masks of the masked areas.
    Type: Grant
    Filed: October 28, 2020
    Date of Patent: October 4, 2022
    Assignee: GM Global Technology Operations LLC
    Inventors: Xingcheng Xiao, Hongliang Wang, Meinan He
  • Patent number: 11453194
    Abstract: The present invention aims to provide an interlayer film for a laminated glass capable of exhibiting high deaeration properties in a vacuum deaeration method and enabling production of a highly transparent laminated glass, and a laminated glass including the interlayer film for a laminated glass. The present invention relates to an interlayer film for a laminated glass, having a large number of recesses on at least one surface, the recesses each having a groove shape with a continuous bottom and being regularly adjacent and parallel to each other, the recesses each having a radius of rotation R of a bottom of the groove shape with a continuous bottom of 45 ?m or less.
    Type: Grant
    Filed: October 13, 2015
    Date of Patent: September 27, 2022
    Assignee: SEKISUI CHEMICAL CO., LTD.
    Inventors: Kazuhiko Nakayama, Hiroaki Inui, Hirofumi Kitano
  • Patent number: 11414732
    Abstract: Provided are a ferritic stainless steel for automotive exhaust systems with improved heat resistance and condensate corrosion resistance and a method for manufacturing the same. The ferritic stainless steel according to an exemplary embodiment of the present invention includes a stainless steel base material comprising, in % by weight, C: 0.01% or less, Si: 0.5 to 1.0%, Mn: 0.5% or less, P: 0.035% or less, S: 0.01% or less, Cr: 11 to 18%, N: 0.013% or less, Ti: 0.15 to 0.5%, Sn: 0.03 to 0.5%, and the remainder of Fe and other inevitable impurities, and an Al-plated layer formed on the stainless steel base material, wherein the ferritic stainless steel comprises a plating compound comprising (Al19FeMnSi2)5.31 (Aluminum Iron Manganese Silicide) at an interface between the stainless steel base material and the Al-plated layer.
    Type: Grant
    Filed: November 27, 2017
    Date of Patent: August 16, 2022
    Assignee: POSCO
    Inventor: Hyung Joon Kim
  • Patent number: 11414720
    Abstract: A high-strength steel sheet for warm working having excellent warm workability, and a method for manufacturing the steel sheet. The steel sheet has a chemical composition including, by mass %, C: 0.05% to 0.20%, Si: 3.0% or less, Mn: 3.5% to 8.0%, P: 0.100% or less, S: 0.02% or less, Al: 0.01% to 3.0%, N: 0.010% or less, one or more selected from Nb: 0.005% to 0.20%, Ti: 0.005% to 0.20%, Mo: 0.005% to 1.0%, and V: 0.005% to 1.0%. The steel sheet has a microstructure including, in terms of area ratio, 10% to 60% of retained austenite, 10% to 80% of ferrite, 10% to 50% of martensite, and 0% to 5% of bainite, in which a C content in the retained austenite is less than 0.40 mass % and the average crystal grain diameter of the retained austenite, the martensite, and the ferrite is 2.0 ?m or less.
    Type: Grant
    Filed: January 26, 2017
    Date of Patent: August 16, 2022
    Assignee: JFE STEEL CORPORATION
    Inventors: Hiroshi Hasegawa, Yoshimasa Funakawa
  • Patent number: 11414721
    Abstract: A method for the manufacture of a TWIP steel is provided including: (A) feeding of a slab comprising by weight: 0.5<C<1.2%, 13.0?Mn<25.0%, S?0.030%, P?0.080%, N?0.1%, Si?3.0%, 0.051%?Al?4.0%, 0.1?V?2.5%, and on a purely optional basis, one or more of Nb?0.5%, B?0.005%, Cr?1.0%, Mo?0.40%, Ni?1.0%, Cu?5.0%, Ti?0.5%, 0.06?Sn?0.2%, the remainder of the composition being made of iron and inevitable impurities resulting from the elaboration, (B) reheating the slab and hot rolling the slab to provide a hot rolled slab, (C) coiling the hot rolled slab to provide a coiled slab, (D) first cold-rolling the coiled slab to provide a first cold rolled slab, (E) recrystallization annealing the first cold rolled slab such that an annealed steel sheet having an UTSannealed is obtained and (F) second cold-rolling the annealed steel sheet with a reduction rate CR % that satisfies the following equation A: 1216.472?0.98795*UTSannealed?(?0.0008*UTSannealed+1.0124)*CR %2+(0.0371*UTSannealed?29.583)*CR %.
    Type: Grant
    Filed: May 18, 2017
    Date of Patent: August 16, 2022
    Assignee: ArcelorMittal
    Inventors: Nicolas Charbonnier, Gerard Petitgand, Sebastien Allain, Marie-Christine Theyssier
  • Patent number: 11401577
    Abstract: A manufacturing process of a press hardened coated part including providing a furnace containing N zones, each furnace zone being respectively heated at a setting temperature ?1F, ?2F, . . . ?iF, . . . , ?NF, including: providing a steel sheet with thickness th between 0.5 and 5 mm, the steel sheet covered by an aluminium alloy precoating with a thickness between 15 and 50 ?m, the emissivity coefficient being equal to 0.15(1+?), ? being between 0 and 2.4, then cutting the steel sheet to obtain a precoated steel blank, then placing the precoated steel blank in furnace zone 1 for a duration t1 between 5 and 600 s, wherein ?1F and t1 are such that: ?1Fmax>?1F>?1Fmin then transferring the precoated steel blank in the furnace zone 2 heated at a setting temperature ?2F=?1B and maintaining isothermally the precoated steel blank for a duration t2, then transferring the precoated steel blank in further zones (3, . . . i, . . . , N) of the furnace, so to reach a maximum blank temperature ?MB between 850° C.
    Type: Grant
    Filed: December 8, 2017
    Date of Patent: August 2, 2022
    Assignee: ArcelorMittal
    Inventor: Alexandre Blaise
  • Patent number: 11365469
    Abstract: Provided is a hot-dip aluminized steel sheet with fine-sized spangles produced in a different way from conventional methods, and a method of producing a hot-dip aluminized steel sheet with fine-sized spangles in a different way from conventional methods. The hot-dip aluminized steel sheet includes: a substrate steel sheet; and an aluminum-based coating which is formed by a hot-dip method on the surface of the substrate steel sheet and in which the average B concentration is not less than 0.005 mass % and the sum of the average Ti concentration and the average V concentration is not more than 0.03 mass %.
    Type: Grant
    Filed: December 19, 2018
    Date of Patent: June 21, 2022
    Assignees: NIPPON STEEL NISSHIN CO., LTD., NS Wheeling-Nisshin, Inc.
    Inventors: Koutarou Ishii, Shinya Furukawa, Shinichi Koga, Yasunori Hattori, Tetsuhiko Okano, Patrick Edward Pendleton
  • Patent number: 11358369
    Abstract: A plating steel sheet for hot press forming includes: a base steel sheet; an Al—Zn-based plating layer formed on at least one surface of the base steel sheet; and an Fe—Al-based surface alloy layer formed between the base steel sheet and the Al—Zn-based plating layer, wherein the Al—Zn-based plating layer can include 10-30 wt % of Zn, 1 wt % or less of Fe, and the balance of Al and impurities.
    Type: Grant
    Filed: December 21, 2018
    Date of Patent: June 14, 2022
    Assignee: POSCO
    Inventors: Hyeon-Seok Hwang, Il-Jeong Park, Myung-Soo Kim
  • Patent number: 11319623
    Abstract: A method for producing a steel strip with an aluminium alloy coating layer in a continuous coating process. Also, a steel strip coated with an aluminium alloy coating layer that can be produced in accordance with the method, the use of such a coated steel strip and the product made by using the coated steel strip.
    Type: Grant
    Filed: February 23, 2018
    Date of Patent: May 3, 2022
    Assignee: TATA STEEL IJMUIDEN B.V.
    Inventors: Hugo Van Schoonevelt, Guido Cornelis Hensen
  • Patent number: 11248275
    Abstract: A warm-workable high-strength steel sheet having superior warm workability and residual ductility after warm working, and a method for manufacturing such steel sheets. The warm-workable high-strength steel sheet has a chemical composition including, in mass %, C: 0.05 to 0.20%, Si: not more than 3.0%, Mn: 3.5 to 8.0%, P: not more than 0.100%, S: not more than 0.02%, Al: 0.01 to 3.0% and N: not more than 0.010%, the balance being Fe and inevitable impurities. The steel sheet has a microstructure that includes, in area fractions, 10 to 60% retained austenite, 10 to 80% ferrite, 5 to 50% martensite and 0 to 5% bainite, the C content in the retained austenite being less than 0.40 mass %.
    Type: Grant
    Filed: January 26, 2017
    Date of Patent: February 15, 2022
    Assignee: JFE STEEL CORPORATION
    Inventors: Hiroshi Hasegawa, Yoshimasa Funakawa
  • Patent number: 11242579
    Abstract: A method to manufacture a hot-rolled high-strength steel sheet or strip with tensile strength of 570 MPa or higher, or preferably 780 MPa or higher, or even more preferably 980 MPa or higher, with an excellent combination of tensile elongation, SFF, and PEF strength.
    Type: Grant
    Filed: September 22, 2017
    Date of Patent: February 8, 2022
    Assignee: TATA STEEL IJMUIDEN B.V.
    Inventors: Rolf Arjan Rijkenberg, Maxim Peter Aarnts, Paul Joseph Bellina, Andrew Paul Vass
  • Patent number: 11225050
    Abstract: Disclosed is a steel sheet for hot press forming, which includes: a base steel sheet; and a plating layer disposed on the base steel sheet and including a diffusion layer and a surface layer that are sequentially laminated, wherein the diffusion layer includes an Fe—Al alloy layer and an Fe—Al intermetallic compound layer that are sequentially disposed on the base steel sheet and each include silicon, and an area fraction of the Fe—Al intermetallic compound layer with respect to the diffusion layer is 84.5% to 98.0%.
    Type: Grant
    Filed: December 2, 2020
    Date of Patent: January 18, 2022
    Assignee: Hyundai Steel Company
    Inventors: Sung Min Kim, Hye Rim Choi
  • Patent number: 11203802
    Abstract: Provided are a single layer zinc alloy plated steel material and a fabrication method therefor, the single layer zinc alloy plated steel material comprising a base iron and a zinc alloy plating layer formed on the base iron, wherein the zinc alloy plating layer contains 13-24 wt % of Mg, and the adhesion amount of the zinc alloy plating layer is at most 40 g/m2 (excluding 0 g/m2).
    Type: Grant
    Filed: December 21, 2017
    Date of Patent: December 21, 2021
    Assignee: POSCO
    Inventors: Young-Jin Kwak, Tae-Yeob Kim
  • Patent number: 11136656
    Abstract: A high strength steel comprises up to about 0.25 wt % C, up to about 2.0 wt % Si, up to about 2.0 wt % Cr, up to 14% Mn, and less than 0.5% Ni. It preferably has an Ms temperature less than 50° C. The high strength steel may have a tensile strength of at least 1000 MPa and total elongations of at least about 25% after hot rolling. It may have a tensile strength of at least 1200 MPa and total elongations of at least about 20% after hot rolling.
    Type: Grant
    Filed: May 20, 2016
    Date of Patent: October 5, 2021
    Assignee: Cleveland-Cliffs Steel Properties Inc.
    Inventors: Luis Gonzalo Garza-Martinez, Grant Aaron Thomas, Amrinder Singh Gill
  • Patent number: 11078555
    Abstract: An austenitic, low-density, high-strength steel strip or sheet having a high ductility, and a method of producing the steel strip or sheet, and for its use.
    Type: Grant
    Filed: February 28, 2017
    Date of Patent: August 3, 2021
    Assignee: TATA STEEL NEDERLAND TECHNOLOGY B.V.
    Inventors: Shangping Chen, Arunansu Haldar, Alireza Saeed-Akbari, Richard Mostert
  • Patent number: 11014195
    Abstract: Provided is a steel welding component having a steel welding blank with an aluminum or aluminum alloy coating. The welding blank is composed of a steel substrate and coatings comprising an intermetallic compound alloy layer contacting the substrate, and a metal alloy layer on the intermetallic compound alloy layer. On at least one of the coating surfaces of the welding blank, the coating within an area to be welded has been totally removed, and an end face of the coating on the side of the coating within the area to be welded removed has an angle of ? being 0-80° with a plane vertical to a surface of the substrate which is parallel to the welding seam. Also provided are welding methods for the steel welding component. The steel welding blank provided ensures the tensile strength, elongation, and corrosion resistance of a hot-stamped welded joint.
    Type: Grant
    Filed: October 17, 2017
    Date of Patent: May 25, 2021
    Assignee: Baoshan Iron & Steel Co., Ltd.
    Inventors: Hua Pan, Yongchao Su, Ming Lei, Lei Shi, Haomin Jiang
  • Patent number: 10982296
    Abstract: An aluminium-zinc-hot-dipped and colour-coated steel plate having yield strength of ?500 MPa and a high elongation and a manufacturing method thereof, with the chemical components in mass percentage of a substrate of the steel plate being: 0.07-0.15% of C, 0.02-0.5% of Si, 1.3-1.8% of Mn, N?0.004%, S?0.01%, Ti?0.15%, Nb?0.050%, and the balance being Fe and other inevitable impurities, and meanwhile satisfying the conditions of: (C+Mn/6)?0.3%; Mn/S?150; Nb satisfying 0.01%?(Nb-0.22C-1.1N)?0.05% where no Ti is contained; Ti satisfying 0.5?Ti/C?1.5 where no Nb is contained; and 0.04%?(Ti+Nb)?0.2% where Ti and Nb are added in combination. The steel plate has a tensile strength of ?550 MPa, an elongation after fracture of ?15%, a good strength and toughness and an excellent corrosion resistance.
    Type: Grant
    Filed: July 25, 2016
    Date of Patent: April 20, 2021
    Assignee: Baoshan Iron & Steel Co., Ltd.
    Inventors: Jun Li, Dechao Xu, Xin Liu, Zhilong Ding, Yuling Ren, Xuewei Ye, Hengfa Hu, Hongming Chen
  • Patent number: 10968506
    Abstract: Provided is a high-manganese hot-dip aluminum-coated steel sheet comprising: a base steel sheet containing, by weight, 5% to 35% of Mn, 0.3 to 6% of Al, 0.1 to 1.2% of Si, the balanced amount of Fe, and inevitable impurities; a hot-dip aluminum-coated layer, formed on a surface of the base steel sheet, containing, by weight, 3 to 12% of Si and the balanced amount of Al, and inevitable impurities; and an alloy layer, 0.1 to 10 ?m in thickness with a Fe—Al—Si—Mn-based alloy phase on an interface between the base steel sheet and the hot-dip aluminum-coated layer, containing, by weight, 40 to 70% of Al, 2 to 13% of Si, 3 to 9% of Mn, the balance amount of Fe, and inevitable impurities.
    Type: Grant
    Filed: December 23, 2016
    Date of Patent: April 6, 2021
    Assignee: POSCO
    Inventors: Heung-Yun Kim, Hyeon-Seok Hwang, Young-Ha Kim
  • Patent number: 10947608
    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.
    Type: Grant
    Filed: September 30, 2016
    Date of Patent: March 16, 2021
    Assignee: ArcelorMittal
    Inventors: Christian Allely, Tiago Machado Amorim, Beril Corlu, Joost De Strycker
  • Patent number: 10906113
    Abstract: Hot dip Zn-based alloy coated steel sheets (1, 1?) are arc-weld in such a way that (a) a current waveform is a pulsed current waveform in which (i) a peak current and a base current alternate with each other at a pulse period of 1 ms to 50 ms and (ii) an average welding current is 100 A to 350 A and (b) an average welding voltage is 20 V to 35 V. Each of the hot dip Zn-based alloy coated steel sheets (1, 1?) includes a coating layer that contains Zn as a main component and that contains Al at a concentration of 1.0% by mass to 22.0% by mass, and has a coating weight W of 15 g/m2 to 250 g/m2.
    Type: Grant
    Filed: February 2, 2016
    Date of Patent: February 2, 2021
    Assignee: Nisshin Steel Co., Ltd.
    Inventors: Kazuaki Hosomi, Tomokazu Nobutoki, Takefumi Nakako
  • Patent number: 10753007
    Abstract: The present invention deals with a process for deposition of indium or indium alloys and an article obtained by the process, wherein the process includes the steps i. providing a substrate having at least one metal or metal alloy surface; ii. depositing a first indium or indium alloy layer on at least one portion of said surface whereby a composed phase layer is formed of a part of the metal or metal alloy surface and a part of the first indium or indium alloy layer; iii. removing partially or wholly the part of the first indium or indium alloy layer which has not been formed into the composed phase layer; iv. depositing a second indium or indium alloy layer on the at least one portion of the surface obtained in step iii.
    Type: Grant
    Filed: October 4, 2016
    Date of Patent: August 25, 2020
    Assignee: Atotech Deutschland GmbH
    Inventors: Grigory Vazhenin, Jan Sperling, Stefan Pieper, Mauro Castellani, Andreas Kirbs, Dirk Rohde
  • Patent number: 10669607
    Abstract: This invention relates to a sheet or pre-coated blank comprising a steel substrate for heat treatment, overlaid on at least a part of at least one of its principal faces, by a pre-coating having, at least one layer of aluminum or aluminum alloy overlaid, on at least a part of the above-mentioned pre-coating, by a polymerized layer having a thickness between 2 and 30 ?m composed of a polymer that does not contain silicon, and the nitrogen content of which, is greater than 1% by weight expressed in relation to the above-mentioned layer, wherein the above-mentioned polymerized layer contains carbon pigments in a quantity between 3 and 30% by weight, expressed in relation to said layer.
    Type: Grant
    Filed: February 13, 2015
    Date of Patent: June 2, 2020
    Assignee: ArcelorMittal
    Inventors: Michel Sanadres, Christine Dessain
  • Patent number: 10626476
    Abstract: A high specific strength steel sheet and a method for manufacturing same are disclosed. The high specific strength steel sheet, which is an aspect of the present invention, is characterized in that an Fe—Al-based intermetallic compound having an average particle diameter of 20 ?m or less is homogeneously dispersed in an austenite matrix, the volume fraction of the Fe—Al-based intermetallic compound is 1 to 50%, and the volume fraction of ?-carbide ((Fe,Mn)3AlC) which is a perovskite carbide and has an L12 structure is 15% or less.
    Type: Grant
    Filed: December 26, 2013
    Date of Patent: April 21, 2020
    Assignees: POSCO, Postech Academy-Industry Foundation
    Inventors: Han-Soo Kim, Nack-Joon Kim, Yoon-Uk Heo, Sang-Heon Kim, Jae-Sang Lee, Jin-Mo Koo
  • Patent number: 10590522
    Abstract: An Al—Fe alloy coated steel sheet includes a base steel sheet and an alloy coating layer, wherein the base steel sheet includes, by wt %, C: 0.1%˜0.5%, Si: 0.01%˜2%, Mn: 0.01%˜10%, P: 0.001%˜0.05%, S: 0.0001%˜0.02%, Al: 0.001%˜1.0%, N: 0.001%˜0.02%, and the balance of Fe and other impurities, wherein the alloy coating layer includes: an Al—Fe alloy layer I formed on the base steel sheet and having a Vickers hardness of 200˜800 Hv; an Al—Fe alloy layer III formed on the Al—Fe alloy layer I and having a Vickers hardness of 700˜1200 Hv; and an Al—Fe alloy layer II formed in the Al—Fe alloy layer III continuously or discontinuously in a length direction of the steel sheet, and having a Vickers hardness of 400˜900 Hv, wherein an average oxygen content at a depth of 0.1 ?m from a surface of the oxide layer is 20% or less by weight.
    Type: Grant
    Filed: December 23, 2016
    Date of Patent: March 17, 2020
    Assignee: POSCO
    Inventors: Jin-Keun Oh, Yeol-Rae Cho, Il-Ryoung Sohn, Yong-Soo Kim
  • 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