Patents Examined by Brian D Walck
  • Patent number: 10697051
    Abstract: The present invention relates to a method for manufacturing Alloy 690 ordered alloy to be used in a steam generator tube serving as a heat exchanger in a nuclear power plant (hereinafter, referred to as NPP), and Alloy 690 ordered alloy manufactured thereby, and provides a method for manufacturing Alloy 690 ordered alloy with improved thermal conductivity, and Alloy 690 ordered alloy manufactured thereby, the method comprising the steps of: solution-annealing Alloy 690; cooling the solution-annealed Alloy 690 to a first temperature of 200° C./min or less; and ordering the cooled Alloy 690 in the temperature range of 410-520° C.
    Type: Grant
    Filed: December 3, 2015
    Date of Patent: June 30, 2020
    Assignee: Korea Atomic Energy Research Institute
    Inventors: Young-Suk Kim, Sung-Soo Kim, Dae-Whan Kim
  • Patent number: 10689723
    Abstract: The present invention relates to a ferritic stainless steel according to the present invention, containing, in mass %: 0.001%?C?0.020%, 0.05%?Si?0.50%, 0.1%?Mn?1.0%, 15.0%?Cr?25.0%, Mo<0.50%, 0.50%?W?5.00%, and 0.01%?Nb?0.50%, with a balance being Fe and unavoidable impurities, having a content (coarse Laves phase ratio) of coarse Laves phase having a diameter of 0.50 ?m or more being 0.1% or less, and having an average grain size being 30 ?m or more and 200 ?m or less.
    Type: Grant
    Filed: June 6, 2018
    Date of Patent: June 23, 2020
    Assignee: DAIDO STEEL CO., LTD.
    Inventors: Yoshihiko Koyanagi, Hiroyuki Takabayashi
  • Patent number: 10669617
    Abstract: Methods for processing bonded dual alloy rotors are provided. In one embodiment, the method includes obtaining a bonded dual alloy rotor including rotor blades bonded to a hub disk. The rotor blades and hub disk are composed of different alloys. A minimum processing temperature (TDISK_PROCESS_MIN) for the hub disk and a maximum critical temperature for the rotor blades (TBLADE_MAX) is established such that TBLADE_MAX is less than TDIsK_PROCESS_MIN. A differential heat treatment process is then performed during which the hub disk is heated to processing temperatures equal to or greater than TDISK_PROCESS_MIN, while at least a volumetric majority of each of the rotor blades is maintained at temperatures below TBLADE_MAX. Such a targeted differential heat treatment process enables desired metallurgical properties (e.g., precipitate hardening) to be created within the hub disk, while preserving the high temperature properties of the rotor blades and any blade coating present thereon.
    Type: Grant
    Filed: August 1, 2019
    Date of Patent: June 2, 2020
    Inventors: Christopher David Gatto, Jude Miller, Benjamin Dosland Kamrath, Don Mittendorf, Jason Smoke, Mark C. Morris
  • Patent number: 10648066
    Abstract: The present invention relates to the reduction of artificial aging time of 7xxx series alloys. Currently, the artificial aging times for typical 7xxx series alloy can be as long as 24 hrs. The current invention allows for a significant reduction of aging times, thereby saving time, energy, money and storage space hence increasing the productivity.
    Type: Grant
    Filed: December 9, 2015
    Date of Patent: May 12, 2020
    Assignee: NOVELIS INC.
    Inventors: Rajeev G. Kamat, Hashem Mousavi-Anijdan, Rahul Kulkarni, Mario A. Salgado-Ordorica
  • Patent number: 10640859
    Abstract: An aspect of the present invention is a production method of a rolled sheet for cold-rolling, the method being characterized by including: a hot-rolling step for forming a rolled sheet by hot-rolling a pure titanium material while coiling; and an annealing step for annealing the hot-rolled sheet after the hot-rolling step, the coiling temperature in the hot-rolling step being 500° C. or less, and the annealing step being controlled so that the percentage area of recrystallized grains in the microstructure of the hot-rolled sheet after annealing is at least 90% and the mean grain size of the recrystallized grains is 5 ?m to 10 ?m.
    Type: Grant
    Filed: March 16, 2016
    Date of Patent: May 5, 2020
    Assignee: Kobe Steel, Ltd.
    Inventors: Kazuya Kimijima, Masanori Kobayashi, Tohru Shiogama, Keitaro Tamura, Yasuyuki Fujii
  • Patent number: 10629345
    Abstract: There is provided a production method and a production device for producing each of the rare earth sintered magnet sintered bodies without carrying a mold in a sintering furnace. The method includes feeding an alloy powder into a mold having side walls divided into two or more sections; filling the alloy powder into the mold to prepare a filled molded-body; orienting the alloy powder in the filled molded-body by applying a magnetic field to the filled molded-body to prepare an oriented filled-molded-body; detaching the side walls of the mold from the oriented filled-molded-body and retrieving the oriented filled-molded-body from the mold; and sintering the retrieved oriented filled-molded-body. The filling step and the orienting step are performed at different locations. A pulsed magnetic field can be applied in the orienting step and inside of the mold can be partitioned into a plurality of cavities by partitions.
    Type: Grant
    Filed: September 18, 2015
    Date of Patent: April 21, 2020
    Inventors: Masato Sagawa, Shinichi Hayashi
  • Patent number: 10614938
    Abstract: The present invention discloses a W-containing R—Fe—B—Cu serial sintered magnet and quenching alloy. The sintered magnet contains an R2Fe14B-type main phase, the R being at least one rare earth element comprising Nd or Pr; the crystal grain boundary of the rare earth magnet contains a W-rich area above 0.004 at % and below 0.26 at %, and the W-rich area accounts for 2.0 vol %˜11.0 vol % of the sintered magnet. The sintered magnet uses a minor amount of W pinning crystal to segregate the migration of the pinned grain boundary in the crystal grain boundary to effectively prevent abnormal grain growth and obtain significant improvement. The crystal grain boundary of the quenching alloy contains a W-rich area above 0.004 at % and below 0.26 at %, and the W-rich area accounts for at least 50 vol % of the crystal grain boundary.
    Type: Grant
    Filed: May 13, 2019
    Date of Patent: April 7, 2020
    Assignees: XIAMEN TUNGSTEN CO., LTD., Fujian Changting Golden Dragon Rare-Earth Co., Ltd
    Inventors: Hiroshi Nagata, Rong Yu, Qin Lan
  • Patent number: 10604817
    Abstract: Provided is a high-strength steel plate for a pressure vessel having excellent low temperature toughness after a post weld heat treatment (PWHT). The high-strength steel plate for a pressure vessel includes: by wt %, 0.02-0.15% of carbon (C), 0.05-0.50% of silicon (Si), 1.0-2.0% of manganese (Mn), 0.005-0.1% of aluminum (Al), 0.015% or less of phosphorus (P), 0.0015% or less of sulfur (S), 0.01-0.03% of niobium (Nb), 0.01-0.03% of vanadium (V), 0.01-0.03% of titanium (Ti), 0.005% or less of chromium (Cr), 0.005% or less of molybdenum (Mo), 0.02-0.50% of copper (Cu), 0.05-0.60% of nickel (Ni), 0.0002-0.0010% of boron (B), 0.0035-0.0065% of nitrogen (N), and a balance of iron (Fe) and other inevitable impurities. A microstructure of the high-strength steel plate includes a complex structure of ferrite having an area fraction of 35-40% and a balance of bainite, and the bainite has a packet size of 15 ?m or less.
    Type: Grant
    Filed: December 1, 2015
    Date of Patent: March 31, 2020
    Assignee: POSCO
    Inventors: Dae-Woo Kim, Kyung-Keun Um
  • Patent number: 10604826
    Abstract: Aluminum and aluminum alloy microstructures that are adapted for improved performance during shaping and forming production processes. Lower relative ratios of alpha fibers, particularly low-end alpha fibers, to beta fibers promotes improved formability of aluminum sheet or blanks without negatively impacting material strength. Beta fibers with higher relative ratios of S and Copper texture components improve formability and produce fewer and more uniform distortions during production. The resulting improvements in quality allow for cupping, drawing, wall ironing, shaping, and necking processes to be carried out faster and with reduced rates of spoilage.
    Type: Grant
    Filed: December 17, 2015
    Date of Patent: March 31, 2020
    Assignee: Novelis Inc.
    Inventors: Yi Wang, Wei Wen, Johnson Go
  • Patent number: 10597759
    Abstract: A non-oriented electrical steel sheet having a chemical composition comprising C: not more than 0.010 mass %, Si: 1.0-7.0 mass %, Mn: 0.001-3.0 mass %, sol. Al: 0.0001-3.5 mass %, P: 0.01-0.2 mass %, S: not more than 0.010 mass %, N: not more than 0.010 mass % and the remainder being Fe and inevitable impurities, wherein a ratio (P120/Fe700) of a peak-peak height P120 of P near to an electronic energy of 120 eV to a peak-peak height Fe700 of Fe near to an electronic energy of 700 eV in an Auger differential spectrum obtained by analyzing a broken surface of a grain boundary through Auger electron spectroscopy is not less than 0.1 and a sheet thickness is 0.10-0.50 mm, and a motor using such a non-oriented electrical steel sheet as an iron core.
    Type: Grant
    Filed: August 11, 2014
    Date of Patent: March 24, 2020
    Inventors: Tadashi Nakanishi, Shinji Koseki, Yoshihiko Oda, Hiroaki Toda
  • Patent number: 10597748
    Abstract: Provided is a steel wire rod for wire drawing containing, in terms of % by mass, C: from 0.90 to 1.20%, Si: from 0.10 to 1.30%, Mn: from 0.20 to 1.00%, Cr: from 0.20 to 1.30%, Al: from 0.005 to 0.050%, and the balance being composed of Fe and impurities, wherein a content of each N, P, and S, which are contained as the impurities, is N: from 0.0070% or less, P: from 0.030% or less, S: from 0.010% or less, and the steel wire rod having a metallographic structure of which 95% or more by volume ratio is a lamellar pearlite structure, wherein the lamellar pearlite structure has an average lamellar spacing of from 50 to 75 nm, an average length of cementites in the lamellar pearlite structure is 1.0 to 4.0 ?m, and a percentage of a number of cementites having a length of 0.5 ?m or less among the cementites in the lamellar pearlite structure is 20% or less.
    Type: Grant
    Filed: October 20, 2016
    Date of Patent: March 24, 2020
    Inventors: Toshihiko Teshima, Yoshihiro Daito, Toshiyuki Manabe
  • Patent number: 10563293
    Abstract: A method for heat treating a powder metallurgy nickel-base alloy article comprises placing the article in a furnace at a start temperature in the furnace that is 80° C. to 200° C. below a gamma prime solvus temperature, and increasing the temperature in the furnace to a solution temperature at a ramp rate in the range of 30° C. per hour to 70° C. per hour. The article is solution treated for a predetermined time, and cooled to ambient temperature.
    Type: Grant
    Filed: December 7, 2015
    Date of Patent: February 18, 2020
    Assignee: ATI Properties LLC
    Inventors: Kevin Bockenstedt, Ramesh S. Minisandram
  • Patent number: 10550455
    Abstract: New 6xxx aluminum alloy strips having an improved combination of properties are disclosed. The new 6xxx new aluminum alloy strips are rolled to a target thickness in-line via at least a first rolling stand and a second rolling stand. In one approach, the 6xxx new aluminum alloy strips may contain 0.8 to 1.25 wt. % Si, 0.2 to 0.6 wt. % Mg, 0.5 to 1.15 wt. % Cu, 0.01 to 0.2 wt. % manganese, 0.01 to 0.2 wt. % iron; up to 0.30 wt. % Ti; up to 0.25 wt. % Zn; up to 0.15 wt. % Cr; and up to 0.18 wt. % Zr.
    Type: Grant
    Filed: December 2, 2015
    Date of Patent: February 4, 2020
    Assignee: ARCONIC INC.
    Inventors: Timothy A. Hosch, John M. Newman, David Allen Tomes, Jr.
  • Patent number: 10538835
    Abstract: Provided herein are variably flexible (i.e., variably stiff) metal alloys and methods of making the variably flexible (i.e., variably stiff) metal alloys. A variably flexible (i.e., variably stiff) metal alloy is a metal alloy that has areas of differing flexibility (i.e., stiffness, rigidity or elasticity) along a length of the metal alloy when the metal alloy is subjected to a load in use. Also provided herein are methods of making variably flexible (i.e., variably stiff) metal alloys and products including casting a metal alloy and selectively heat treating portions of the metal alloy to achieve predetermined stiffnesses in those portions.
    Type: Grant
    Filed: June 5, 2018
    Date of Patent: January 21, 2020
    Assignee: Adallo LLC
    Inventors: Ji Ma, Ibrahim Karaman, Eric Flickinger
  • Patent number: 10535453
    Abstract: The present invention provides a grain-oriented electrical steel sheet with reduced iron loss over a wide range of sheet thickness by providing a grain-oriented electrical steel sheet with an actually measured sheet thickness t (mm) that includes a closure domain region extending linearly in a direction from 60° to 120° with respect to the rolling direction on a surface of the steel sheet, the closure domain region being formed periodically at a spacing s (mm) in the rolling direction, such that h?74.9t+39.1 (0.26?t), h?897t?174.7 (t>0.26), (w×h)/(s×1000)??12.6t+7.9 (t>0.22), and (w×h)/(s×1000)??40.6t+14.1 (t?0.22), where h (?m) is the depth and w (?m) is the width of the closure domain region.
    Type: Grant
    Filed: October 29, 2013
    Date of Patent: January 14, 2020
    Assignee: JFE Steel Corporation
    Inventors: Shigehiro Takajo, Hirotaka Inoue, Seiji Okabe, Kazuhiro Hanazawa
  • Patent number: 10533243
    Abstract: New 6xxx aluminum alloys having an improved combination of properties are disclosed. Generally, the new 6xxx aluminum alloys contain 1.00-1.45 wt. % Si, 0.32-0.51 wt. % Mg, wherein a ratio of wt. % Si to wt. % Mg is in the range of from 2.0:1 (Si:Mg) to 4.5:1 (Si:Mg), 0.12-0.44 wt. % Cu, 0.08-0.19 wt. % Fe, 0.02-0.30 wt. % Mn, 0.01-0.06 wt. % Cr, 0.01-0.14 wt. % Ti, and ?0.25 wt. % Zn, the balance being aluminum and impurities, wherein the aluminum alloy includes ?0.05 wt. % of any one impurity, and wherein the aluminum alloy includes ?0.15 in total of all impurities.
    Type: Grant
    Filed: January 4, 2017
    Date of Patent: January 14, 2020
    Assignee: ARCONIC INC.
    Inventors: John M. Newman, Timothy A. Hosch, John F. Butler, Jr.
  • Patent number: 10508318
    Abstract: When a plurality of outer rings (R) are sequentially and inductively heated to a target temperature by energizing a heating coil (2) elongated more than each of the plurality of outer rings (R), which are made of steel and retained coaxially by a retaining unit (3), while relatively moving the outer rings (R) and the heating coil (2) in an axial direction, an output of the heating coil (2) is varied in consideration of the number of outer rings (R) present in an opposing region of the heating coil (2).
    Type: Grant
    Filed: September 8, 2014
    Date of Patent: December 17, 2019
    Inventors: Eri Hirayama, Tsuneaki Hiraoka, Shintaro Suzuki
  • Patent number: 10494699
    Abstract: The invention provides a method of refining aluminum alloy, which is characterized in that aluminum-based nanometer quasicrystal alloy is used as an aluminum alloy refiner to refine the aluminum alloy; the aluminum-based nanometer quasicrystal alloy does not comprise Si, Fe or Cr; the aluminum-based nanometer quasicrystal alloy consists of (1) Al; (2) Mn and (3) La and/or Ce. The refiner selected in the invention is rare earth-containing alloy which has a strong refinement ability on the aluminum alloy, and is nanometer quasicrystal; after adding the rare earth-containing alloy to melt, the element distribution of the rare earth-containing alloy is more uniform than that of traditional alloy; and nanometer quasicrystal particles substantially increase the number of heterogeneous nucleation particles and improve the grain refinement effect of the aluminum alloy.
    Type: Grant
    Filed: March 16, 2016
    Date of Patent: December 3, 2019
    Assignees: CITIC DICASTAL CO., LTD., Hebei University of Technology
    Inventors: Lisheng Wang, Yongning Wang, Zhihua Zhu, Chunhai Liu, Changhai Li, Lateng A, Zhendong Zhang, Bangwei Bai, Weimin Zhao, Zhifeng Wang
  • Patent number: 10490393
    Abstract: A tantalum sputtering target, wherein, on a sputtering surface of the tantalum sputtering target, an orientation rate of a (200) plane exceeds 70%, an orientation rate of a (222) plane is 30% or less. By controlling the crystal orientation of the target, effects are yielded in that the discharge voltage of the tantalum sputtering target can be reduced so that plasma can be more easily generated, and the voltage drift during deposition can be suppressed.
    Type: Grant
    Filed: December 6, 2013
    Date of Patent: November 26, 2019
    Assignee: JX Nippon Mining & Metals Corporation
    Inventors: Shinichiro Senda, Kotaro Nagatsu
  • Patent number: 10480053
    Abstract: The present invention relates to an austenitic light-weight high-strength steel with excellent properties of welds, and a method of manufacturing the same, the method including: (a) hot-rolling a steel including 20 wt % to 30 wt % of manganese (Mn), 6 wt % to 12 wt % of aluminum (Al), 0.6 wt % to 1.5 wt % of carbon (C), 0.3 wt % to 0.95 wt % of vanadium (V), and a remaining amount of iron (Fe) and other unavoidable impurities; (b) homogenizing the hot-rolled steel; and (c) aging the homogenized steel.
    Type: Grant
    Filed: November 24, 2015
    Date of Patent: November 19, 2019
    Inventors: Joon-Oh Moon, Seong-Jun Park, Chang-Hoon Lee