Patents Examined by Brian D Walck
  • Patent number: 11186890
    Abstract: The invention describes a two-phase steel comprising 8-12 wt. % Mn, 0.3-0.6 wt. % C, 1-4 wt. % Al, 0.4-1 wt. % V, and a balance of Fe. The steel has martensite and retained austenite phases, and may include vanadium carbide precipitations. A method for making the two-phase steel involves the steps of (a) hot rolling the ingots of the composition to produce a plurality of thick steel sheets, (b) treating the steel sheets by an air cooling process, (c) warm rolling the steel sheets at a temperature in the range of 300-800° C. with a thicknesses reduction of 30-50%, (d) annealing the steel sheets a first time at a temperature in the range of 620-660° C. for 10-300 min, (e) cold rolling the steel sheets at room temperature with a thickness reduction of 10-30% to generate hard martensite, and (f) annealing the steel sheets a second time at a temperature in the range of 300-700° C. for 3-60 min to facilitate the partitioning of carbon and release the residual stress n martensite.
    Type: Grant
    Filed: August 24, 2016
    Date of Patent: November 30, 2021
    Assignee: THE UNIVERSITY OF HONG KONG
    Inventors: Mingxin Huang, Binbin He
  • Patent number: 11180829
    Abstract: A titanium copper according to the present invention contains from 1.5 to 5.0% by mass of Ti, the balance being of Cu and inevitable impurities, wherein the titanium copper has a layered structure of Cu and Ti where in a Ti concentration curve obtained by analyzing a cross section parallel to a rolling direction along a thickness direction by STEM-EDX, a lower concentration Ti layer having a Ti concentration less than an average value of Ti concentrations in the Ti concentration curve and a higher concentration Ti layer having a Ti concentration equal to or higher than the average value of the Ti concentrations in the Ti concentration curve are alternately present in the thickness direction, and wherein in the cross section parallel to the rolling direction, a number of higher concentration Ti layers is 5 layers per 500 nm in the thickness direction.
    Type: Grant
    Filed: March 12, 2018
    Date of Patent: November 23, 2021
    Assignee: JX Nippon Mining & Metals Corporation
    Inventor: Kenta Tsujie
  • Patent number: 11174528
    Abstract: An oil-immersion quenching cooling precursor and an oil-immersion quenching cooling method includes an axle-type workpiece or a workpiece that has sections in an axle form. Several separation rings are arranged on the workpiece in the axial direction to separate the axle-type workpiece or the workpiece that has sections in an axle form into a plurality of sections before oil-immersion quenching cooling. In the method, there is a cutting procedure before a quenching cooling procedure. Several separation rings distributed in the axial direction are reserved outside a dimension required for the workpiece. sections before oil-immersion quenching cooling. In the method, there is a cutting procedure before a quenching cooling procedure. Several separation rings distributed in the axial direction are reserved outside a dimension required for the workpiece.
    Type: Grant
    Filed: June 20, 2016
    Date of Patent: November 16, 2021
    Assignee: BEIJING HUALI FINE CHEMICAL CO., LTD.
    Inventors: Kejian Zhang, Shui Wang, Xuezhi Hao, Shengdong Ge
  • Patent number: 11174530
    Abstract: A steel strip, sheet or blank used for painted parts, wherein the steel strip, sheet or blank is optionally metallic coated. According to the invention, the steel has grains with an essentially equi-axed median grain size smaller than 11.0 micrometer, resulting in a difference in Waviness ?Wsa?0.12 ?m between the surface before and after the forming of the strip, sheet or blank. The invention also relates to a method for producing such a steel strip.
    Type: Grant
    Filed: October 13, 2017
    Date of Patent: November 16, 2021
    Assignee: TATA STEEL IJMUIDEN B.V.
    Inventors: Maxim Peter Aarnts, Job Anthonius Van Der Hoeven, Edgar Matthijs Toose
  • Patent number: 11174534
    Abstract: A titanium copper according to the present invention contains from 1.5 to 5.
    Type: Grant
    Filed: March 12, 2018
    Date of Patent: November 16, 2021
    Assignee: JX Nippon Mining & Metals Corporation
    Inventor: Kenta Tsujie
  • Patent number: 11174533
    Abstract: The disclosure relates to a Cu-based microcrystal alloy and a preparation method thereof. Through being measured in percentage by mass, the Cu-based microcrystal alloy provided by the disclosure includes 20 to 30 percent of Mn, 0.01 to 10 percent of Al, 5 to 10 percent of Ni, 0.3 to 1.5 percent of Ti, 0 to 1.5 percent of Zr, 0.05 to 2 percent of Si and 45 to 74.64 percent of Cu.
    Type: Grant
    Filed: July 2, 2018
    Date of Patent: November 16, 2021
    Assignee: BYD COMPANY LIMITED
    Inventors: Qiang Guo, Mengde Wang, Wei An
  • Patent number: 11168382
    Abstract: A sliding contact material that is used for a constituent material, particularly a brush, of a motor. The sliding contact material includes: Pd in an amount of 20.0% by mass or more and 50.0% by mass or less; Ni and/or Co in an amount of 0.6% by mass or more and 3.0% by mass or less in terms of a total concentration; and Ag and inevitable impurities as a balance. Preferably, the sliding contact material further contains an additive element M including at least one of Sn and In, and the total concentration of the additive element M is 0.1% by mass or more and 3.0% by mass or less. When containing the additive element M, the sliding contact material has material structures in which composite dispersed particles containing an intermetallic compound of Pd and the additive element M are dispersed in an Ag alloy matrix, and the ratio (KPd/KM) of the content (% by mass) of Pd and the content (% by mass) of the additive element M in the composite dispersed particles is within a range of 2.4 or more and 3.6 or less.
    Type: Grant
    Filed: January 17, 2017
    Date of Patent: November 9, 2021
    Assignee: TANAKA KIKINZOKU KOGYO K.K.
    Inventors: Takao Asada, Takumi Niitsuma, Terumasa Tsuruta, Masahiro Takahashi, Yuusuke Saito
  • Patent number: 11149326
    Abstract: An aspect of the present invention relates to a high-strength and high-manganese steel having excellent low-temperature toughness, the high-strength and high-manganese steel comprising, in terms of wt %, 4.3-5.7% of manganese (Mn), 0.015-0.055% of carbon (C), 0.015-0.05% silicon (Si), 0.6-1.7% of aluminum (Al), 0.01-0.1% of niobium (Nb), 0.015-0.055% of titanium (Ti), 0.001-0.005% of boron (B), 0.03% or less of phosphor (P), 0.02% or less of sulfur (S), and the balance iron (Fe) and other inevitable impurities, wherein the microstructure thereof comprises, in terms of percent by volume, 40-60% of martensite and 40-60% of tempered martensite.
    Type: Grant
    Filed: October 19, 2017
    Date of Patent: October 19, 2021
    Assignee: POSCO
    Inventors: Il-Cheol Yi, Jae-Yong Chae, Sang-Deok Kang, Jae-Young Cho, Hong-Yeol Oh, Tae-Il So
  • Patent number: 11142815
    Abstract: The present invention, in some embodiments, is a method of forming an O temper or T temper product that includes obtaining a coil of a non-ferrous alloy strip as feedstock; uncoiling the coil of the feedstock; heating the feedstock to a temperature between a recrystallization temperature of the non-ferrous alloy and 10 degrees Fahrenheit below a solidus temperature of the non-ferrous alloy; and quenching the feedstock to form a heat-treated product having am O temper or T temper. The non-ferrous alloy strip used in the method excludes aluminum alloys having 0.4 weight percent silicon, less than 0.2 weight percent iron, 0.35 to 0.40 weight percent copper, 0.9 weight percent manganese, and 1 weight percent magnesium.
    Type: Grant
    Filed: July 7, 2015
    Date of Patent: October 12, 2021
    Assignee: ARCONIC TECHNOLOGIES LLC
    Inventors: Gavin F. Wyatt-Mair, David A. Tomes, William D. Bennon, Raymond J. Kilmer, James C. Riggs, Ali Unal, John M. Newman, Thomas N. Rouns
  • Patent number: 11142812
    Abstract: A multicaloric alloy material combines two isostructural compounds, the first compound being MnNiSi and the second compound being either MnFeGe or CoFeGe, each such compound having extremely different magnetic and thermo-structural properties. The resulting alloy material (MnNiSi)1-x(MnFeGe)x or (MnNiSi)1-x(CoFeGe)x possesses extraordinary magnetocaloric and/or barocaloric properties with an acute sensitivity to applied pressure and no appreciable magnetic hysteresis losses.
    Type: Grant
    Filed: July 17, 2015
    Date of Patent: October 12, 2021
    Inventors: Tapas Samanta, Shane Stadler, Naushad Ali
  • Patent number: 11136634
    Abstract: A superalloy component heat treatment method using controlled induction heat treatment. The method being adapted to controllably generate a coarse grain microstructure region within the component from a fine grain microstructure metallic component. The method further being adapted to controllably form precipitates within the desired region in order to achieve a desired hardness therein. A single piece alloy component having a controlled core region and a controlled peripheral region. The controlled core region defining fine metallurgical grains and adapted to provide a desired fatigue resistance. The controlled peripheral region defining coarse metallurgical grains and adapted to provide a desired creep resistance.
    Type: Grant
    Filed: December 21, 2016
    Date of Patent: October 5, 2021
    Inventors: Florent Bridier, Philippe Bocher, Jonathan Cormier, Patrick Villechaise
  • Patent number: 11136658
    Abstract: An aluminum alloy extruded material that exhibits high strength by air cooling immediately after extrusion processing and excellent stress corrosion cracking resistance, and a method for manufacturing the same are disclosed. The material includes, by mass: 6.0 to 8.0% of Zn, 1.50 to 2.70% of Mg, 0.20 to 1.50% of Cu, 0.005 to 0.05% of Ti, 0.10 to 0.25% of Zr, 0.3% or less of Mn, 0.05% or less of Cr, 0.25% or less of Sr, and 0.10 to 0.50% in total among Zr, Mn, Cr and Sr, with the balance being Al and unavoidable impurities.
    Type: Grant
    Filed: September 26, 2018
    Date of Patent: October 5, 2021
    Inventors: Karin Shibata, Tomoo Yoshida
  • Patent number: 11123824
    Abstract: A solder alloy has an alloy composition including, in mass %, 0.8% to 10% of Cu and Sn. The solder alloy includes an intermetallic compound. The intermetallic compound has a maximum grain size of 100 ?m or less in a region at least 50 ?m away from a surface of the solder alloy.
    Type: Grant
    Filed: December 26, 2018
    Date of Patent: September 21, 2021
    Assignee: SENJU METAL INDUSTRY CO., LTD.
    Inventors: Takahiro Yokoyama, Shunsaku Yoshikawa
  • Patent number: 11118250
    Abstract: Ti, N, Al, Mg, and Ca concentrations are controlled in order to prevent aggregation of TiN inclusions. Furthermore, not only is a Fe—Cr—Ni alloy having superior surface property provided, but also a method is proposed in which the Fe—Cr—Ni alloy is produced at low cost using commonly used equipment. The Fe—Cr—Ni alloy includes C?0.05%, Si: 0.1 to 0.8%, Mn: 0.2 to 0.8%, P?0.03%, S?0.001%, Ni:16 to 35%, Cr: 18 to 25%, Al: 0.2 to 0.4%, Ti: 0.25 to 0.4%, N?0.016%, Mg: 0.0015 to 0.008%, Ca?0.005%, O: 0.0002 to 0.005%, freely selected Mo: 0.5 to 2.5% in mass % and Fe and inevitable impurities as the remainder, wherein Ti and N satisfy % N×% Ti?0.0045 and the number of TiN inclusions not smaller than 5 ?m is 20 to 200 pieces/cm2 at a freely selected cross section.
    Type: Grant
    Filed: June 21, 2017
    Date of Patent: September 14, 2021
    Assignee: NIPPON YAKIN KOGYO CO., LTD.
    Inventors: Kenji Mizuno, Hidekazu Todoroki, Yosuke Baba, Yusuke Kobayashi, Waki Nishijima
  • Patent number: 11118246
    Abstract: A watch part containing a titanium alloy, the titanium alloy, in mass %, includes: Al: 1.0 to 3.5%; Fe: 0.1 to 0.4%; O: 0.00 to 0.15%; C: 0.00 to 0.10%; Sn: 0.00 to 0.20%; Si: 0.00 to 0.15%; and the balance: Ti and impurities, an average grain diameter of ? phase crystal grains is 15.0 ?m or less, an average aspect ratio of the ? phase crystal grains is 1.0 or more and 3.0 or less, and a coefficient of variation of a number density of ?-phase crystal grains distributed in the ? phase is 0.30 or less.
    Type: Grant
    Filed: August 28, 2018
    Date of Patent: September 14, 2021
    Assignees: NIPPON STEEL CORPORATION, CASIO COMPUTER CO., LTD.
    Inventors: Genki Tsukamoto, Kazuhiro Takahashi, Hideto Seto, Naoki Okamura, Junichi Sato
  • Patent number: 11111568
    Abstract: A steel for cold forging has a predetermined chemical composition, satisfies d+3??10.0 and SA/SB<0.30, includes 1200/mm2 or more of sulfides having an equivalent circle diameter of 1.0 to 10.0 ?m in a microstructure, and has an average distance between the sulfides of less than 30.0 ?m. Here, d is an average value of equivalent circle diameters of sulfides having an equivalent circle diameter of 1.0 ?m or more, ? is a standard deviation of the equivalent circle diameters of the sulfides having an equivalent circle diameter of 1.0 ?m or more, SA is the number of sulfides having an equivalent circle diameter of 1.0 ?m or more and less than 3.0 ?m, and SB is the number of the sulfides having an equivalent circle diameter of 1.0 ?m or more.
    Type: Grant
    Filed: September 30, 2016
    Date of Patent: September 7, 2021
    Assignee: NIPPON STEEL CORPORATION
    Inventors: Akira Shiga, Manabu Kubota, Hajime Hasegawa
  • Patent number: 11111555
    Abstract: A rail achieves a high 0.2% proof stress after straightening treatment, the high 0.2% proof stress being effective at improving rolling contact fatigue resistance of the rail, by hot rolling a steel raw material to obtain a rail, the steel raw material having a chemical composition containing C: 0.70% to 0.85%, Si: 0.1% to 1.5%, Mn: 0.4% to 1.5%, P: 0.035% or less, S: 0.010% or less, and Cr: 0.05% to 1.50% with the balance being Fe and inevitable impurities; straightening the rail with a load of 50 tf or more; and subsequently subjecting the rail to heat treatment in which the rail is held in a temperature range of 150° C. or more and 400° C. or less for 0.5 hours or more and 10 hours or less.
    Type: Grant
    Filed: March 20, 2018
    Date of Patent: September 7, 2021
    Assignee: JFE STEEL CORPORATION
    Inventors: Minoru Honjo, Tatsumi Kimura, Katsuyuki Ichimiya, Kazukuni Hase
  • Patent number: 11090768
    Abstract: A lead-free, antimony-free tin solder which is reliable at high temperatures and comprises up to 10 wt % Ag, up to 10 wt % Bi, up to 3 wt % Cu, other optional additives, balance tin, and unavoidable impurities.
    Type: Grant
    Filed: April 28, 2015
    Date of Patent: August 17, 2021
    Assignee: ALPHA ASSEMBLY SOLUTIONS INC.
    Inventors: Pritha Choudhury, Morgana De Avila Ribas, Sutapa Mukherjee, Anil Kumar, Siuli Sarkar, Ranjit Pandher, Ravi Bhatkal, Bawa Singh
  • Patent number: 11085093
    Abstract: An ultra-high strength maraging stainless steel with nominal composition (in mass) of C?0.03%, Cr: 13.0-14.0%, Ni: 5.5-7.0%, Co: 5.5-7.5%, Mo: 3.0-5.0%, Ti: 1.9-2.5%, Si: ?0.1%, Mn: ?0.1%, P: ?0.01%, S: ?0.01%, and Fe: balance. The developed ultra-high strength maraging stainless steel combines ultra-high strength (with ?b?2000 MPa, ?0.2?1700 MPa, ??8% and ??40%), high toughness (KIC?83 MPa·m½) and superior salt-water corrosion resistance (with pitting potential Epit?0.15 (vs SCE)). Therefore, this steel is suitable to make structural parts that are used in harsh corrosive environments like marine environment containing chloride ions, etc.
    Type: Grant
    Filed: July 5, 2017
    Date of Patent: August 10, 2021
    Assignees: The Boeing Company, Institute of Metal Research
    Inventors: Jialong Tian, Ke Yang, Wei Wang, Yiyin Shan, Wei Yan
  • Patent number: 11072835
    Abstract: Provided herein is a high-strength seamless stainless steel pipe. The high-strength seamless stainless steel pipe contains, in mass %, C: 0.05% or less, Si: 0.5% or less, Mn: 0.15 to 1.0%, P: 0.030% or less, S: 0.005% or less, Cr: 14.5 to 17.5%, Ni: 3.0 to 6.0%, Mo: 2.7 to 5.0%, Cu: 0.3 to 4.0%, W: 0.1 to 2.5%, V: 0.02 to 0.20%, Al: 0.10% or less, N: 0.15% or less, and the balance being Fe and unavoidable impurities. C, Si, Mn, Cr, Ni, Mo, Cu, and N satisfy a specific formula. Cu, Mo, W, Cr, and Ni satisfy another specific formula. The high-strength seamless stainless steel pipe has more than 45% martensite phase, 10 to 45% ferrite phase, and 30% or less retained austenite phase. The total amount of precipitated Cr, precipitated Mo, and precipitated W is 0.75 mass % or less.
    Type: Grant
    Filed: June 14, 2017
    Date of Patent: July 27, 2021
    Assignee: JFE Steel Corporation
    Inventors: Kenichiro Eguchi, Yasuhide Ishiguro