Chromium Containing Patents (Class 148/410)
  • Patent number: 10801088
    Abstract: Methods of forming an intermediate alloy and a Ni-base super alloy are disclosed along with the intermediate alloy and the Ni-base super alloy formed by the method. The method includes at least partially melting and solidifying a powder including about 5 to 15 wt. % of Co, 10 to 20 wt. % of Cr, 3 to 6 wt. % of Mo, 3 to 6 wt. % of W, 2 to 4 wt. % of Al, 4.2 to 4.7 wt. % of Ti, 0.01 to 0.05 wt. % of Zr, 0.015 to 0.060 wt. % of C, 0.001 to 0.030 wt. % of B and balance substantially Ni to form an intermediate alloy including a dendrite structure that includes columnar regions and intercolumnar regions and a primary dendrite arm spacing less than about 3 micrometers. The intermediate alloy is heat-treated to form the texture-free Ni-base super alloy.
    Type: Grant
    Filed: December 15, 2018
    Date of Patent: October 13, 2020
    Assignee: General Electric Company
    Inventors: Laura Cerully Dial, Michael Francis Xavier Gigliotti, Jr.
  • Patent number: 10793939
    Abstract: A process includes solution heat treating a nickel based superalloy with greater than about 40% by volume of gamma prime precipitate to dissolve the gamma prime precipitate in the nickel based superalloy; cooling the nickel based superalloy to about 85% of a solution temperature measured on an absolute scale to coarsen the gamma prime precipitate such that a precipitate structure is greater than about 0.7 micron size; and wrought processing the nickel based superalloy at a temperature below a recrystallization temperature of the nickel based superalloy. A material includes a nickel based superalloy with greater than about 40% by volume of gamma prime precipitate in which the precipitate structure is greater than about 0.7 micron size.
    Type: Grant
    Filed: December 10, 2018
    Date of Patent: October 6, 2020
    Assignee: United Technologies Coporation
    Inventors: Dilip M. Shah, Alan D. Cetel, Venkatarama K. Seetharaman
  • Patent number: 10793934
    Abstract: An embodiment of a superalloy composition includes 1.5 to 4.5 wt % Al; 0.005 to 0.06 wt % B; 0.02 to 0.07 wt % C; 21.0 to 26.0 wt % Co; 11.5 to 16.0 wt % Cr; 8.50 to 19.0 wt % Ta; 0.005-0.10 wt % Zr; and balance Ni and incidental impurities.
    Type: Grant
    Filed: May 2, 2017
    Date of Patent: October 6, 2020
    Inventors: Max A. Kaplan, Xuan Liu, David Ulrich Furrer
  • Patent number: 10722946
    Abstract: Methods are provided that include depositing a nickel-base superalloy powder including gamma nickel solid solution and gamma prime (Ni3Al) solid solution phases onto a seed crystal having a predetermined primary orientation, fully melting the powder and a portion of the seed crystal at a superliquidus temperature to form an initial layer having the predetermined primary orientation, heat treating the layer at subsolvus temperatures to precipitate gamma prime solid solution phase particles, depositing additional powder over the layer, melting the deposited powder and a portion of the initial layer at a superliquidus temperature to form a successive layer having the predetermined primary orientation, heat treating the layer at a subsolvus temperature to precipitate gamma prime solid solution phase particles, and repeating depositing additional powder, melting the additional powder and the portion of the successive layer at the superliquidus temperature, and heat treating the successive layer at a subsolvus temp
    Type: Grant
    Filed: April 25, 2016
    Date of Patent: July 28, 2020
    Inventor: Thomas Strangman
  • Patent number: 10724129
    Abstract: The present invention relates to a precipitation hardened high Ni heat-resistant alloy having a component composition including, in terms of mass %: Cr: 14 to 25%; Mo: 15% or less; Co: 15% or less; Cu: 5% or less; Al: 4% or less; Ti: 4% or less; Nb: 6% or less; provided that Al+Ti+Nb is 1.0% or more; and inevitable impurities including at least C and N, with the balance being Ni, in which C is contained in an amount of 0.01% or less, and N fixed as carbonitride is contained in such an amount that Michelin point determined from inclusions extracted by an evaluation method according to ASTM-E45 is 100 or less.
    Type: Grant
    Filed: October 24, 2017
    Date of Patent: July 28, 2020
    Assignee: DAIDO STEEL CO., LTD.
    Inventor: Koichi Uno
  • Patent number: 10702923
    Abstract: A method of manufacturing a Ni alloy part includes a solution treatment step of solution treating a sintered compact, which is obtained by sintering and molding a precipitation hardening Ni alloy powder by metal injection molding, by allowing the sintered compact to hold at a temperature of not lower than 1050° C. but not higher than 1250° C. for one hour to five hours, followed by rapidly cooling to room temperature, where the precipitation hardening Ni alloy powder, and an aging treatment step of aging-treating the solution-treated sintered compact by allowing the solution-treated sintered compact to hold at the temperature of not lower than 600° C. but not higher than 800° C., followed by cooling to room temperature.
    Type: Grant
    Filed: October 5, 2016
    Date of Patent: July 7, 2020
    Assignee: IHI Corporation
    Inventors: Nobuyasu Tsuno, Shuji Ikeda
  • Patent number: 10550451
    Abstract: An object of the present invention is to provide an Ni-based alloy pipe or tube for nuclear power with reduced rate of SCC crack propagation. The Ni-based alloy pipe or tube for nuclear power according to the present invention is an Ni-based alloy pipe or tube having a wall thickness of 15 to 55 mm, having a chemical composition of, in mass %: 0.010 to 0.025% C; 0.10 to 0.50% Si; 0.01 to 0.50% Mn; up to 0.030% P; up to 0.002% S; 52.5 to 65.0% Ni; 20.0 to 35.0% Cr; 0.03 to 0.30% Mo; up to 0.018% Co; up to 0.015% Sn; 0.005 to 0.050% N; 0 to 0.300% Ti; 0 to 0.200% Nb; 0 to 0.300% Ta; 0% or more and less than 0.03% Zr; and the balance being Fe and impurities, wherein the Ni-based alloy pipe or tube has a microstructure being an austenite single phase, and the chemical composition satisfies the following equation, Eq. (1): ?0.0020?[N]/14?{[Ti]/47.9+[Nb]/92.9+[Ta]/180.9+[Zr]/91.2}?0.0015??Eq. (1). For the element symbols in Eq. (1), the contents of the corresponding elements in mass % are substituted.
    Type: Grant
    Filed: June 21, 2016
    Date of Patent: February 4, 2020
    Assignee: Nippon Steel Corporation
    Inventors: Kiyoko Takeda, Shoji Kinomura
  • Patent number: 10513756
    Abstract: The Ni-based alloy exhibits superior grain boundary corrosion resistance including C: 0.005 to 0.03 mass %, Si: 0.02 to 1 mass %, Mn: 0.02 to 1 mass %, P: not more than 0.03 mass %, S: not more than 0.005 mass %, Cr: 18 to 24 mass %, Mo: 8 to 10 mass %, Nb: 2.5 to 5.0 mass %, Al: 0.05 to 0.4 mass %, Ti: not more than 1 mass %, Fe: not more than 5 mass %, N: not more than 0.02 mass %, and Ni as a remainder and inevitable impurities. The C concentration range, the ratio of (Nb, Ti) C carbides to all carbides is not less than 90%, and the number of (Nb, Ti) C carbides satisfies the following formula: ?30×T+37220=<number of (Nb, Ti) C carbides (number/mm2)=<?7.7×T2+15700×T?7866000 under a condition of 2000×% C+890=<T(temperature ° C.)=<1150.
    Type: Grant
    Filed: August 28, 2018
    Date of Patent: December 24, 2019
    Assignee: NIPPON YAKIN KOGYO CO., LTD.
    Inventors: Takafumi Kikutake, Fugao Wei
  • Patent number: 10385426
    Abstract: The present invention relates to an Ni-based superalloy having a composition containing, in terms of % by mass, C: from 0.1 to 0.3%, Cr: from 8.0 to 12.0%, Mo: from 1.0 to 5.0%, Co: from 10.0 to 20.0%, Ta: from 0.01 to 1.50%, Ti: from 2.0 to 4.2%, Al: from 5.0 to 8.0%, V: from 0 to 1.5%, B: from 0.005 to 0.030%, and Zr: from 0.05 to 0.15%, with the balance being Ni and unavoidable impurities, and satisfying, in terms of atom %, Ti+Al being from 16.0 to 20.3% and Ti/Al being 0.3 or less.
    Type: Grant
    Filed: February 20, 2018
    Date of Patent: August 20, 2019
    Assignee: DAIDO STEEL CO., LTD.
    Inventors: Kyohei Yokota, Yoshinori Sumi, Yoshihiko Koyanagi, Hiroyuki Takabayashi
  • Patent number: 10301568
    Abstract: [Technical Problem] An object is to provide a sliding system which can achieve both the reduced friction and the enhanced wear resistance by means of a novel combination of a sliding film and a lubricant oil. [Solution to Problem] The sliding system of the present invention comprises: a pair of sliding members having sliding surfaces that can relatively move while facing each other; and a lubricant oil interposed between the sliding surfaces facing each other. At least one of the sliding surfaces comprises a coating surface of a crystalline chromium carbide film. The lubricant oil contains an oil-soluble molybdenum compound that has a chemical structure of a trinuclear of Mo. When the chromium carbide film as a whole is 100 at %, the chromium carbide film contains 40-75 at % of Cr.
    Type: Grant
    Filed: January 27, 2017
    Date of Patent: May 28, 2019
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Hiroyuki Mori, Mamoru Tohyama, Masaru Okuyama, Keiji Hayashi, Naoya Ikeda
  • Patent number: 10301711
    Abstract: A process includes solution heat treating a nickel based superalloy with greater than about 40% by volume of gamma prime precipitate to dissolve the gamma prime precipitate in the nickel based superalloy; cooling the nickel based superalloy to about 85% of a solution temperature measured on an absolute scale to coarsen the gamma prime precipitate such that a precipitate structure is greater than about 0.7 micron size; and wrought processing the nickel based superalloy at a temperature below a recrystallization temperature of the nickel based superalloy. A material includes a nickel based superalloy with greater than about 40% by volume of gamma prime precipitate in which the precipitate structure is greater than about 0.7 micron size.
    Type: Grant
    Filed: September 28, 2015
    Date of Patent: May 28, 2019
    Assignee: United Technologies Corporation
    Inventors: Dilip M Shah, Alan D Cetel, Venkatarama K Seetharaman
  • Patent number: 10250015
    Abstract: A spark plug having a housing, an insulator situated in the housing, a center electrode situated in the insulator and a ground electrode situated on the housing, the ground electrode and the center electrode being situated toward each other in such a way that the ground electrode and the center electrode form a spark gap, and the center electrode rest with a center electrode head on a seat developed on an inner side of the insulator, and the center electrode having an electrode base body and a core situated in the electrode base body, the core being made from a material that has a higher heat conductivity than the material of the electrode base body, the electrode base body having a diameter that is not greater than 1.7 mm.
    Type: Grant
    Filed: December 3, 2015
    Date of Patent: April 2, 2019
    Assignee: ROBERT BOSCH GMBH
    Inventors: Andreas Benz, Manfred Roeckelein
  • Patent number: 10192770
    Abstract: Apparatus and methods for processing a semiconductor wafer including a susceptor assembly with recesses comprising at least three lift pins. The lift pins include a sleeve with a spring and pin positioned therein. The spring and pin elevate the wafer to a position where the wafer can be pre-heated and, upon compression, lowers the wafer to a processing position.
    Type: Grant
    Filed: October 3, 2014
    Date of Patent: January 29, 2019
    Assignee: Applied Materials, Inc.
    Inventor: Joseph Yudovsky
  • Patent number: 10167870
    Abstract: Magnetically coupled pumps use cans which have a side wall arranged in a gap between a driver and a rotor of the pump. With a view to good efficiency of the pump, the gap should be as narrow as possible, which can only be achieved with a side wall of a thin wall thickness. In this case, the can must be of a sufficiently great strength, in particular to withstand the differences in pressure in the pump. At the same time, it must be possible for the can to be shaped into a desired geometry in a simple way and to have a high degree of dimensional stability, even under high pump pressures. It is proposed to make a can (1) with a side wall (3) that consists at least partially of a material with a nickel component, wherein the material is a nickel-chromium alloy comprising at least 50 percent by weight of nickel and 17 to 21 percent by weight of chromium, and to harden the side wall (3) by a heat treatment.
    Type: Grant
    Filed: December 11, 2013
    Date of Patent: January 1, 2019
    Assignee: KLAUS UNION GMBH & CO. KG
    Inventor: Thomas Eschner
  • Patent number: 10119182
    Abstract: The present invention relates to an Ni-based superalloy for hot forging, containing, in terms of % by mass, C: more than 0.001% and less than 0.100%, Cr: 11% or more and less than 19%, Co: more than 5% and less than 25%, Fe: 0.1% or more and less than 4.0%, Mo: more than 2.0% and less than 5.0%, W: more than 1.0% and less than 5.0%, Nb: 2.0% or more and less than 4.0%, Al: more than 3.0% and less than 5.0%, and Ti: more than 1.0% and less than 3.0%, with the balance being unavoidable impurities and Ni, in which the component composition satisfies the following two relationships: 3.5?([Ti]+[Nb])/[Al]×10<6.5 and 9.5?[Al]+[Ti]+[Nb]<13.0.
    Type: Grant
    Filed: January 12, 2017
    Date of Patent: November 6, 2018
    Assignee: DAIDO STEEL CO., LTD.
    Inventors: Mototsugu Osaki, Shigeki Ueta, Kohki Izumi
  • Patent number: 10100392
    Abstract: A high strength, corrosion resistant alloy suitable for use in oil and gas environments includes, in weight percent: 0-15% Fe, 18-24% Cr, 3-9% Mo, 0.05-3.0% Cu, 4.0-6.5% Nb, 0.5-2.2% Ti, 0.05-1.0% Al, 0.005-0.040% C, balance Ni plus incidental impurities and deoxidizers. A ratio of Nb/(Ti+Al) is equal to 2.5-7.5.
    Type: Grant
    Filed: April 29, 2015
    Date of Patent: October 16, 2018
    Assignee: Huntington Alloys Corporation
    Inventor: Sarwan Kumar Mannan
  • Patent number: 10011892
    Abstract: Methods are provided for producing alloy forms from alloys containing one or more extremely reactive elements and for fabricating a component therefrom. The fabricating method comprises substantially removing a reactive gas from the fabrication environment. An alloy form of the alloy is formed. The alloy form is formed by melting the alloy or by melting one or more base elements of the alloy to produce a molten liquid and introducing the one or more extremely reactive elements into the molten liquid. The molten alloy is shaped into the alloy form. The component is formed from the alloy form. If the one or more extremely reactive elements are introduced into the molten liquid, such introduction occurs just prior to the shaping step.
    Type: Grant
    Filed: August 21, 2014
    Date of Patent: July 3, 2018
    Assignee: HONEYWELL INTERNATIONAL INC.
    Inventors: Andy Szuromi, Brian Hann, Mark C. Morris, Donald G. Godfrey
  • Patent number: 9863019
    Abstract: A high-strength Ni-base alloy having favorable corrosion resistance, high strength, and high ductility, around room temperature is provided. A high-strength Ni-base alloy includes: in % by mass, less than 0.01% of C, not more than 0.5% of Si, not more than 0.5% of Mn, 15 to 25% of Cr. 1.0 to 5.0% of Mo or Mo+0.5W, 0.2 to 0.8% of Al, 1.0 to 2.0% of Ti, 3.00 to 3.80% of Nb, not more than 30% of Fe, and 0.0007 to 0.010% of Mg; Ni; and impurities. A value represented by Mg/S is not less than 0.7, and an A value is not less than 0.015 and less than 0.027, the A value being represented by A value=Al/(Al+1.77(Ti?1.36C)+3.44(Nb?5.1C)).
    Type: Grant
    Filed: July 1, 2015
    Date of Patent: January 9, 2018
    Assignee: HITACHI METALS, LTD.
    Inventors: Toshihiro Uehara, Chuya Aoki
  • Patent number: 9783873
    Abstract: A composition of matter comprises, in combination, in weight percent: a content of nickel as a largest content; 3.10-3.75 aluminum; 0.02-0.09 boron; 0.02-0.09 carbon; 9.5-11.25 chromium; 20.0-22.0 cobalt; 2.8-4.2 molybdenum; 1.6-2.4 niobium; 4.2-6.1 tantalum; 2.6-3.5 titanium; 1.8-2.5 tungsten; and 0.04-0.09 zirconium.
    Type: Grant
    Filed: February 14, 2012
    Date of Patent: October 10, 2017
    Assignee: United Technologies Corporation
    Inventors: Paul L. Reynolds, Darryl Slade Stolz
  • Patent number: 9764384
    Abstract: Methods of forming dispersoid hardened metallic materials are provided. In an exemplary embodiment, a method of producing dispersoid hardened metallic materials includes forming a starting composition with a base metal component and a dispersoid forming component. The starting composition includes the base metal component in an amount from about 50 to about 99.999 weight percent and the dispersoid forming component in an amount from about 0.001 to about 1 weight percent, based on the total weight of the starting composition. A starting powder is formed from the starting composition, and the starting powder is fluidized with a fluidizing gas for a period of time sufficient to oxidize the dispersoid forming component to form the dispersoid hardened metallic material. The dispersoid forming component is oxidized while the starting powder is a solid.
    Type: Grant
    Filed: April 14, 2015
    Date of Patent: September 19, 2017
    Assignee: HONEYWELL INTERNATIONAL INC.
    Inventors: Don Mittendorf, Vladimir K. Tolpygo
  • Patent number: 9714724
    Abstract: An exhaust valve spindle for an exhaust valve in an internal combustion engine has a shaft and a valve disc at the lower end of the shaft, which valve disc at its upper surface has a seat area. The seat area is of a seat material comprising at least from 34.0 to 44.0% Cr, an aggregate amount of Nb and Ta in the range from at least 2.8 to 6.1%, from 0.3 to 2.0% Ti, at the most 0.2% Al, at the most 0.04% B, at the most 0.8% Fe, at the most 0.04% C, at the most 0.4% Si, and a balance of Ni, where the amount of Ti+Nb+0.5×Ta is in the range from 3.4 to 6.6%, and where the amount of Nb+0.5×Ta is less than 3.0% if the amount of Ti is larger than 1.5%.
    Type: Grant
    Filed: August 6, 2015
    Date of Patent: July 25, 2017
    Assignee: MAN DIESEL & TURBO. FILIAL AF MAN DIESEL & TURBO SE. TYSKLAND
    Inventor: Uffe Bihlet
  • Patent number: 9616480
    Abstract: A thermo-mechanical treatment process is disclosed. A nickel-base alloy workpiece is heated in a first heating step to a temperature greater than the M23C6 carbide solvus temperature of the nickel-base alloy. The nickel-base alloy workpiece is worked in a first working step to a reduction in area of 20% to 70%. The nickel-base alloy workpiece is at a temperature greater than the M23C6 carbide solvus temperature when the first working step begins. The nickel-base alloy workpiece is heated in a second working step to a temperature greater than 1700° F. (926° C.) and less than the M23C6 carbide solvus temperature of the nickel-base alloy. The nickel-base alloy workpiece is not permitted to cool to ambient temperature between completion of the first working step and the beginning of the second heating step. The nickel-base alloy workpiece is worked to a second reduction in area of 20% to 70%. The nickel-base alloy workpiece is at a temperature greater than 1700° F. (926° C.
    Type: Grant
    Filed: December 2, 2013
    Date of Patent: April 11, 2017
    Assignee: ATI PROPERTIES LLC
    Inventors: Robin M. Forbes Jones, Christopher D. Rock
  • Patent number: 9562276
    Abstract: Articles suitable for use in high temperature applications, such as turbomachinery components, and methods for making such articles, are provided. One embodiment is an article. The article comprises a material comprising a plurality of L12-structured gamma-prime phase precipitates distributed within a matrix phase at a concentration of at least 20% by volume, wherein the gamma-prime phase precipitates are less than 1 micrometer in size, and a plurality of A3-structured eta phase precipitates distributed within the matrix phase at a concentration in the range from about 1% to about 25% by volume. The solvus temperature of the eta phase is higher than the solvus temperature of the gamma-prime phase. Moreover, the material has a median grain size less than 10 micrometers.
    Type: Grant
    Filed: December 13, 2013
    Date of Patent: February 7, 2017
    Assignee: General Electric Company
    Inventors: Richard DiDomizio, Judson Sloan Marte, Pazhayannur Ramanathan Subramanian
  • Patent number: 9551049
    Abstract: High modulus turbine shafts and high modulus cylindrical articles are described as are the process parameters for producing these shafts and cylindrical articles. The shafts/articles have a high Young's modulus as a result of having high modulus <111> crystal texture along the longitudinal axis of the shaft/article. The shafts are produced from directionally solidified seeded <111> single crystal cylinders that are axisymmetrically hot worked before a limited recrystallization process is carried out at a temperature below the recrystallization temperature of the alloy. The disclosed process produces an intense singular <111> texture and results in shaft or cylindrical article with a Young's modulus that is at least 40% greater than that of conventional nickel or iron alloys or conventional steels.
    Type: Grant
    Filed: August 28, 2012
    Date of Patent: January 24, 2017
    Assignee: UNITED TECHNOLOGIES CORPORATION
    Inventors: Dilip M. Shah, Herbert A. Chin, John Joseph Marcin, Paul L. Reynolds, Gabriel L. Suciu, Paul D. Genereux, Carl E. Kelly
  • Patent number: 9234525
    Abstract: A compressor wheel for a turbocharger comprising a central hub and a plurality of impeller blades extending outwardly from the hub. Each of the blades defines a leading edge, a trailing edge and a root portion which connects the blade to the hub. At least one of the blades has a surface provided with a variable thickness surface layer of a ceramic material. The leading edge of the blade is provided with a thicker surface layer of the ceramic material than the trailing edge of the blade, the root portion of the blade, or both the trailing edge and root portion of the blade.
    Type: Grant
    Filed: November 22, 2010
    Date of Patent: January 12, 2016
    Assignee: Cummins Turbo Technologies Limited
    Inventors: Michael Voong, Tom J. Roberts, Katie Rhodes, Luke Hankin
  • Patent number: 9085485
    Abstract: Certain example embodiments relate to Ni-inclusive ternary alloy being provided as a barrier layer for protecting an IR reflecting layer comprising silver or the like. The provision of a barrier layer comprising nickel, chromium, and/or molybdenum and/or oxides thereof may improve corrosion resistance, as well as chemical and mechanical durability. In certain examples, more than one barrier layer may be used on at least one side of the layer comprising silver. In still further examples, a NixCryMoz-based layer may be used as the functional layer, rather than or in addition to as a barrier layer, in a coating.
    Type: Grant
    Filed: January 8, 2015
    Date of Patent: July 21, 2015
    Assignee: Guardian Industries Corp.
    Inventors: Muhammad Imran, Bernd Disteldorf, Marcus Frank, Richard Blacker
  • Patent number: 9017490
    Abstract: A high strength, corrosion resistant alloy suitable for use in oil and gas environments includes, in weight %: 0-12% Fe, 18-24% Cr, 3-6.2% Mo, 0.05-3.0% Cu, 4.0-6.5% Nb, 1.1-2.2% Ti, 0.05-0.4% 0.05-0.2% Al, 0.005-0.040% C, balance Ni plus incidental impurities and deoxidizers. A ratio of Nb/(Ti+Al) is equal to 2.5-7.5 to provide a desired volume fraction of ?? and ?? phases. The alloy has a minimum yield strength of 145 ksi.
    Type: Grant
    Filed: November 18, 2008
    Date of Patent: April 28, 2015
    Assignee: Huntington Alloys Corporation
    Inventor: Sarwan Kumar Mannan
  • Patent number: 8956471
    Abstract: A nickel (Ni) based alloy for forging includes: 0.001 to 0.1 wt. % of carbon (C); 12 to 23 wt. % of chromium (Cr); 3.5 to 5.0 wt. % of aluminum (Al); 5 to 12 combined wt. % of tungsten (W) and molybdenum (Mo) in which the Mo content is 5 wt. % or less; a negligible small amount of titanium (Ti), tantalate (Ta) and niobium (Nb); and the balance of Ni and inevitable impurities.
    Type: Grant
    Filed: October 17, 2008
    Date of Patent: February 17, 2015
    Assignee: Mitsubishi Hitachi Power Systems, Ltd.
    Inventors: Shinya Imano, Hiroyuki Doi, Jun Sato
  • Publication number: 20150017015
    Abstract: A nickel (Ni) based alloy for forging includes: 0.001 to 0.1 wt. % of carbon (C); 12 to 23 wt. % of chromium (Cr); 3.5 to 5.0 wt. % of aluminum (Al); 5 to 12 combined wt. % of tungsten (W) and molybdenum (Mo) in which the Mo content is 5 wt. % or less; a negligible small amount of titanium (Ti), tantalate (Ta) and niobium (Nb); and the balance of Ni and inevitable impurities.
    Type: Application
    Filed: September 25, 2014
    Publication date: January 15, 2015
    Inventors: Shinya Imano, Hiroyuki Doi, Jun Sato
  • Patent number: 8906174
    Abstract: Disclosed are a high-strength Ni-base alloy, a method of producing the Ni-base alloy, and a method of recovering a member made of a degraded Ni-base alloy. It contains not more than 0.1 wt % C, not more than 50 wt % Fe, not more than 30 wt % Cr, Ti, and at least one of Nb and Al. It has been strengthened by precipitates of a ?? phase (Ni3Al) and/or a ?? phase (Ni3Nb). It contains also a ? phase (Ni3Ti) which is thermodynamically stable in a temperature range of 800° C. to 900° C. When observed a cross-section of the Ni-base alloy, a plurality of nodes exist along each segment connecting two meeting points each of which point is defined by adjacent three crystal grains, and precipitates of the ?? phase and/or the ?? phase in each of crystal grains of the Ni-base alloy have an average particle size of not more than 100 nm.
    Type: Grant
    Filed: February 18, 2010
    Date of Patent: December 9, 2014
    Assignee: Mitsubishi Hitachi Power Systems, Ltd.
    Inventors: Shinya Imano, Jun Sato
  • Publication number: 20140154093
    Abstract: A method of heat treating a superalloy article is disclosed. The method includes hot-working an article comprising an superalloy to produce a hot-worked microstructure throughout the article; solution treating the article at a temperature and for a time sufficient to form a partially recrystallized warm-worked microstructure throughout the article; and cooling the article. The method also includes precipitation aging the article at a first precipitation aging temperature of about 1300° F. to about 1400° F. for a first duration of about 4 hours to about 12 hours; cooling the article to a second precipitation aging temperature; precipitation aging the article at a second precipitation aging temperature of about 1150° F. to about 1200° F. for a second duration of about 4 hours to about 12 hours; and cooling the article from the second precipitation aging temperature to an ambient temperature.
    Type: Application
    Filed: October 29, 2012
    Publication date: June 5, 2014
    Applicant: GENERAL ELECTRIC COMPANY
    Inventors: JEFFREY ALLEN HAWK, ROBIN CARL SCHWANT
  • Patent number: 8696836
    Abstract: The present invention provides a nonmagnetic high-hardness alloy having a Ni-based alloy composition containing; by weight %, C of 0.1% or less: Si of 2.0% or less; Mn of 2.0% or less; P of 0.03% or less; S of 0.01% or less; Cr of 30 to 45%; Al of 1.5 to 5.0%; and a balance of unavoidable impurities and Ni, the nonmagnetic high-hardness alloy being subjected to cold or warm plastic working and then ageing treatment, and a method for producing the nonmagnetic high-hardness alloy.
    Type: Grant
    Filed: March 2, 2006
    Date of Patent: April 15, 2014
    Assignee: Daido Tokushuko Kabushiki Kaisha
    Inventors: Noritaka Takahata, Michiharu Ogawa, Shigeki Ueta, Tetsuya Shimizu
  • Patent number: 8613810
    Abstract: A gamma prime nickel-base superalloy and components formed therefrom that exhibit improved high-temperature dwell capabilities, including creep and dwell fatigue crack growth behavior. The superalloy contains, by weight, 10.00 to 22.0% cobalt, 10.0 to 14.0% chromium, 4.0 to 6.0% tantalum, 2.0 to 4.0% aluminum, 2.0 to 6.0% titanium, 1.5 to 5.0% tungsten, 1.5 to 5.0% molybdenum, 1.0 to 3.5% niobium, 0.05 to 0.6% hafnium, 0.02 to 0.10% carbon, 0.01 to 0.40% boron, 0.02 to 0.10% zirconium, the balance essentially nickel and impurities, wherein the titanium:aluminum weight ratio is 0.7 to 1.5. The superalloy is hot worked and heat treated to contain cellular gamma prime precipitates that distort grain boundaries, creating tortuous grain boundary fracture paths that are believed to promote the fatigue crack growth resistance of the superalloy.
    Type: Grant
    Filed: May 3, 2011
    Date of Patent: December 24, 2013
    Assignee: General Electric Company
    Inventors: David Paul Mourer, Kenneth Rees Bain
  • Publication number: 20130327447
    Abstract: A high strength corrosion resistant tubing comprises about 35 to about 55% Ni, about 12 to about 25% Cr, about 0.5 to about 5% Mo, up to about 3% Cu, about 2.1 to about 4.5% Nb, about 0.5 to about 3% Ti, about 0.05 to about 1.0% Al, about 0.005 to about 0.04% C, balance Fe plus incidental impurities and deoxidizers. The composition also satisfies the equation: (Nb?7.75 C)/(Al+Ti)=about 0.5 to about 9. A process for manufacturing the tubing includes: extruding the alloy to form a tubing; cold working the extruded tubing; annealing the cold worked tubing; and applying at least one age hardening step to the annealed tubing. Another process includes extruding the alloy at a temperature of about 2050° F. or less; annealing the extruded tubing; and applying at least one age hardening step to the annealed tubing.
    Type: Application
    Filed: June 11, 2012
    Publication date: December 12, 2013
    Applicant: HUNTINGTON ALLOYS CORPORATION
    Inventor: Sarwan K. Mannan
  • Publication number: 20130255843
    Abstract: A precipitation-strengthened Ni-based heat-resistant alloy of the present invention includes 0.03 wt % or less of C, 0.5 wt % or less of Mn, 0.01 wt % or less of P, 0.01 wt % or less of S, 2.0 to 3.0 wt % of Si, 23 to 30 wt % of Cr, 7.0 to 14.0 wt % of W, 10 to 20 wt % of Fe, and 40 to 60 wt % of Ni, wherein a total content of C, N, O, P and S is 0.01 wt % or less. A silicide is dispersed and precipitated and a grain size of a matrix austenite is controlled through a thermo-mechanical treatment. As a result, the precipitation-strengthened Ni-based heat-resistant alloy excellent in irradiation resistance, heat resistance and corrosion resistance can be obtained with a low cost.
    Type: Application
    Filed: May 29, 2013
    Publication date: October 3, 2013
    Inventors: Kiyoshi KIUCHI, Kiyoyuki Shiba, Tsuyoshi Noura, Jumpei Nakayama
  • Patent number: 8460482
    Abstract: A heat-resistant alloy spring is made of a Ni-based alloy material comprising in weight %: not more than 0.1% C; not more than 1.0% Si; not more than 1.50% Mn; 13.0 to 25.0% Cr; 1.5 to 7.0% Mo; 0.5 to 4.0% Ti; 0.1 to 3.0% Al; {at least one optional element selected from the group consisting of 0.15 to 2.50% W, 0.001 to 0.020% B, 0.01 to 0.3% Zr, 0.30 to 6.00% Nb, 5.0 to 18.0% Co, and 0.03 to 2.00% Cu}; the balance being essentially Ni; and incidental impurities. The Ni-based alloy material is provided in its crystal structure with gamma prime phase [Ni3(Al, Ti)] or gamma prime phase [Ni3(Al, Ti, Nb)].
    Type: Grant
    Filed: September 24, 2007
    Date of Patent: June 11, 2013
    Assignees: Nippon Seisen Co., Ltd., Chuo Spring Co., Ltd.
    Inventors: Yoshinori Tanimoto, Naoyuki Kawahata, Shoji Ichikawa, Hiroyuki Shiga
  • Publication number: 20130133793
    Abstract: A method for heat treating a 718-type nickel-base comprises heating a 718-type nickel-base alloy to a heat treating temperature, and holding the alloy at the heat treating temperature for a heat treating time sufficient to form an equilibrium or near-equilibrium concentration of ?-phase grain boundary precipitates within the nickel-base alloy and up to 25 percent by weight of total ??-phase and ??-phase. The 718-type nickel-base alloy is air cooled. The present disclosure also includes a 718-type nickel-base alloy comprising a near-equilibrium concentration of ?-phase grain boundary precipitates and up to 25 percent by weight of total ??-phase and ??-phase precipitates. Alloys according to the disclosure may be included in articles of manufacture such as, for example, face sheet, honeycomb core elements, and honeycomb panels for thermal protection systems for hypersonic flight vehicles and space vehicles.
    Type: Application
    Filed: November 30, 2011
    Publication date: May 30, 2013
    Applicant: ATI Properties, Inc.
    Inventor: Erin T. McDevitt
  • Patent number: 8449262
    Abstract: Nickel-based superalloys, turbine blades, and methods of improving or repairing turbine engine components are included. A nickel-based superalloy includes, by weight, about 5% to about 12% cobalt, about 3% to about 10% chromium, about 5.5% to about 6.3% aluminum, about 5% to about 10% tantalum, about 3% to about 10% rhenium, about 2% to about 5% of one or more of elements selected from a group consisting of platinum, ruthenium, palladium, and iridium, about 0.1% to about 1.0% hafnium, about 0.01% to about 0.4% yttrium, about 0.01% to about 0.15% silicon, and a balance of nickel.
    Type: Grant
    Filed: December 8, 2009
    Date of Patent: May 28, 2013
    Assignee: Honeywell International Inc.
    Inventor: Tom Strangman
  • Patent number: 8431073
    Abstract: A nickel base gamma prime strengthened superalloy with a unique blend of adequate hot corrosion resistance, high oxidation resistance, high coating compatibility, adequate phase stability, adequate creep resistance and low density is disclosed. The composition includes: Up to 20 wt % Co, between 12 and 14 wt % Cr, between 1 and 2 wt % Mo, between 1.4 and 2.8 wt % W, between 5.1 and 5.9 wt % Al, between 1.1 and 1.6 wt % Ti, between 3 and 7 wt % Ta, between 0.01 and 0.3 wt % of C+Zr+B, between 0.05 and 1 wt % Hf, between 0.05 and 1 wt % Si, and between 0.01 and 0.2 wt % of the sum of rare earths such as Sc, Y, the actinides and the lanthanides. The composition is intended for use in hot components such as gas turbine blades, and the hot components are preferably produced by clean casting.
    Type: Grant
    Filed: July 8, 2009
    Date of Patent: April 30, 2013
    Assignee: Siemens Aktiengesellschaft
    Inventor: Magnus Hasselqvist
  • Patent number: 8343419
    Abstract: An object of the present invention is to provide a Ni base alloy solid wire for welding, which has excellent cracking resistance to ductility dip cracking in weld metal, can increase the tensile strength of the weld metal to not less than the tensile strength of the base material, and has excellent weldability. The present invention provides a solid wire which has a composition containing Cr: 27.0 to 31.5 mass %, Ti: 0.50 to 0.90 mass %, Nb: 0.40 to 0.70 mass %, Ta: 0.10 to 0.30 mass %, C: 0.010 to 0.030 mass %, and Fe: 5.0 to 11.0 mass %, and is regulated to Al: 0.10 mass % or less, N: 0.020 mass % or less, Zr 0.005 mass % or less, P:0.010 mass % or less, S: 0.0050 mass % or less, Si: 0.50 mass % or less, and Mn: 1.00 mass % or less, with the balance including Ni and inevitable impurities.
    Type: Grant
    Filed: February 8, 2011
    Date of Patent: January 1, 2013
    Assignee: Kobe Steel, Ltd.
    Inventors: Tetsunao Ikeda, Masaki Shimamoto, Shun Izutani, Hiroaki Kawamoto, Yushi Sawada, Hirohisa Watanabe
  • Publication number: 20120097297
    Abstract: There are provided a high hardness, high corrosion resistance and high wear resistance alloy, wherein the alloy is an aging heat treated Cr(chromium)-Al(aluminum)-Ni(nickel)-base alloy, the proportion of a mixed phase of (? phase+?? phase+? phase) precipitated at grain boundaries of ? phase grains in a metal structure in the cross section of the alloy is not less than 95% in terms of area ratio, and the intensity ratio as measured by X-ray diffractometry of the alloy is not less than 50% and not more than 200% in terms of I?(110)/[I?(200)+I??(004)]×100, and a component comprising this alloy, a material for an alloy which can form this alloy, and a process for producing this alloy. The present invention can provide a Cr—Al—Ni-base alloy possessing excellent corrosion resistance, hardness, wear resistance, releasability, fatigue strength, and planishing property in a molding face, a component comprising this alloy, a material for an alloy which can form this alloy, and a process for producing this alloy.
    Type: Application
    Filed: September 22, 2011
    Publication date: April 26, 2012
    Applicants: Toshiba Materials Co., Ltd., Kabushiki Kaisha Toshiba
    Inventors: Takashi Rokutanda, Tomohisa Arai, Takao Kusaka, Nobuyoshi Jimbo
  • Patent number: 8101122
    Abstract: The invention includes a turbine cover bucket of an alloy including carbon at less than approximately 0.04 weight percent, manganese at approximately 0.0-0.2 weight percent, silicon at approximately 0.0-0.25 weight percent, phosphorus at approximately 0.0-0.015 weight percent, sulfur at approximately 0.0-0.015 weight percent, chromium from approximately 20.0-23.0 weight percent, molybdenum from approximately 8.5-9.5 weight percent, niobium from approximately 3.25-4 weight percent, tantalum at approximately 0.0-0.05 weight percent, titanium from approximately 0.2-0.4 weight percent, aluminum from approximately 0.15-0.3 weight percent, iron from approximately 3.0-4.5 weight percent, and the remainder being nickel. The alloy is heat treated at 538° C. to 760° C. for up to 100 hours. A method of manufacturing the turbine bucket cover is also provided.
    Type: Grant
    Filed: May 6, 2009
    Date of Patent: January 24, 2012
    Assignee: General Electric Company
    Inventor: Jeffrey Allen Hawk
  • Publication number: 20110203707
    Abstract: A gamma prime nickel-base superalloy and components formed therefrom that exhibit improved high-temperature dwell capabilities, including creep and dwell fatigue crack growth behavior. The superalloy contains, by weight, 10.00 to 22.0% cobalt, 10.0 to 14.0% chromium, 4.0 to 6.0% tantalum, 2.0 to 4.0% aluminum, 2.0 to 6.0% titanium, 1.5 to 5.0% tungsten, 1.5 to 5.0% molybdenum, 1.0 to 3.5% niobium, 0.05 to 0.6% hafnium, 0.02 to 0.10% carbon, 0.01 to 0.40% boron, 0.02 to 0.10% zirconium, the balance essentially nickel and impurities, wherein the titanium:aluminum weight ratio is 0.7 to 1.5. The superalloy is hot worked and heat treated to contain cellular gamma prime precipitates that distort grain boundaries, creating tortuous grain boundary fracture paths that are believed to promote the fatigue crack growth resistance of the superalloy.
    Type: Application
    Filed: May 3, 2011
    Publication date: August 25, 2011
    Applicant: GENERAL ELECTRIC COMPANY
    Inventors: David Paul Mourer, Kenneth Rees Bain
  • Patent number: 7967924
    Abstract: A compositionally graded gas turbine disk is made by preparing a rotationally symmetric radially inner segment of a gas turbine disk preform, rotating the inner segment about a central axis, spray applying a radially outer-segment material onto the radially inner segment as it rotates about the central axis, preferably achieving a gradual transition in composition, and thereafter further processing the gas turbine disk preform to produce the compositionally graded gas turbine disk.
    Type: Grant
    Filed: May 17, 2005
    Date of Patent: June 28, 2011
    Assignee: General Electric Company
    Inventors: Jon Raymond Groh, Eric Allen Ott, Robert Edward Schafrik, Daniel Donald Krueger
  • Patent number: 7931759
    Abstract: Improved compositions are described for the protection of gas turbine parts at elevated temperatures. The compositions are of the MCrAlY type, wherein M is Nickel, or Nickel in combination with cobalt and/or iron. The compositions further comprise a lanthanide, a group 4 metal selected from hafnium, zirconium, titanium, or a combination of these, and optionally, a group 14 element selected from silicon and/or germanium. The combination results in improved Al retention properties. Also disclosed herein are articles comprising the coatings.
    Type: Grant
    Filed: January 9, 2007
    Date of Patent: April 26, 2011
    Assignee: General Electric Company
    Inventors: Canan Uslu Hardwicke, Ganjiang Feng, Melvin Robert Jackson
  • Patent number: 7922969
    Abstract: The corrosion-resistant nickel-base alloy combines thermal stability with corrosion resistance and mechanical strength. The alloy contains balanced proportions of nickel, molybdenum, chromium, and iron with an effective amount of yttrium to stabilize grain boundaries against unwanted reactions, which might degrade corrosion resistance, and an effective amount of boron to maintain an acceptable level of ductility. The alloy may contain minor amounts of additives or impurities, such as silicon, manganese, and aluminum. The alloy may contain between about 25-45% molybdenum, 2-6% chromium, 2-4% iron, 0.01-0.03% boron, 0.005-0.015% yttrium, and up to a maximum of 1% manganese, silicon, and aluminum, respectively, by weight, the balance being nickel. It is preferred that the combined ratio of molybdenum, chromium, and iron to nickel be in the range of about 25% to 45%.
    Type: Grant
    Filed: June 28, 2007
    Date of Patent: April 12, 2011
    Assignee: King Fahd University of Petroleum and Minerals
    Inventor: Hani M. Tawancy
  • Publication number: 20110064569
    Abstract: In one embodiment, a nickel-base alloy for forging or rolling contains, in weight %, carbon (C): 0.05 to 0.2, silicon (Si) 0.01 to 1, manganese (Mn): 0.01 to 1, cobalt (Co): 5 to 20, iron (Fe): 0.01 to 10, chromium (Cr): 15 to 25, and one kind or two kinds or more of molybdenum (Mo), tungsten (W) and rhenium (Re), with Mo+(W+Re)/2: 8 to 25, the balance being nickel (Ni) and unavoidable impurities.
    Type: Application
    Filed: August 11, 2010
    Publication date: March 17, 2011
    Applicant: Kabushiki Kaisha Toshiba
    Inventors: Masayuki YAMADA, Kiyoshi Imai, Kuniyoshi Nemoto, Shigekazu Miyashita, Takeo Suga
  • Publication number: 20110058977
    Abstract: A Ni based cast alloy consisting essentially of C: 0.01 to 0.2% by weight, Si: 0.5 to 4.0% by weight, Cr: 14 to 22% by weight, Mo+W: 4.0 to 10% by weight, B: 0.001 to 0.02% by weight, Co: up to 10% by weight, Al: up to 0.5% by weight, Ti: up to 0.5% by weight, Nb: up to 5.0% by weight, Fe: up to 10% by weight, the balance being Ni and incidental impurities, wherein a ?? phase precipitates in a matrix phase thereof.
    Type: Application
    Filed: August 27, 2010
    Publication date: March 10, 2011
    Inventors: Jun Sato, Shinya Imano, Hiroyuki Doi
  • Publication number: 20110036471
    Abstract: A component made of an alloy including carbon at less than approximately 0.04 weight percent, manganese at about 0.0 to about 0.2 weight percent, silicon at about 0.0 to about 0.25 weight percent, phosphorus at about 0.0 to about 0.015 weight percent, sulfur at about 0.0 to about 0.015 weight percent, chromium from about 20.0 to about 23.0 weight percent, molybdenum from about 8.5 to about 9.5 weight percent, niobium from about 3.25 to about 4 weight percent, tantalum at about 0.0 to about 0.05 weight percent, titanium from about 0.2 to about 0.4 weight percent, aluminum from about 0.15 to about 0.3 weight percent, iron from about 3.0 to about 4.5 weight percent, and the remainder being nickel. The alloy may then be subjected to heat treatment procedures such as annealing at a temperature of less than approximately 982° C. and a duration of less than approximately one hour and aging at a temperature between approximately 538° C. and 760° C. and a duration of up to approximately 100 hours.
    Type: Application
    Filed: October 6, 2010
    Publication date: February 17, 2011
    Inventors: Afina Lupulescu, Robert Edward Deallenbach, Robin Carl Schwant, Jeffrey Michael Breznak, Jeffrey Allen Hawk
  • Publication number: 20110011500
    Abstract: A Ni—Fe—Cr—Mo alloy containing a small amount of Cu and correlated percentages of Nb, Ti and Al to develop a unique microstructure to produce 145 ksi minimum yield strength. The unique microstructure is obtained by special annealing and age hardening conditions, by virtue of which the alloy has an attractive combination of yield strength, impact strength, ductility, corrosion resistance, thermal stability and formability, and is especially suited for corrosive oil well applications that contain gaseous mixtures of carbon dioxide and hydrogen sulfide. The alloy comprises in weight percent the following: 0-15% Fe, 18-24% Cr, 3-9% Mo, 0.05 3.0% Cu, 3.6-6.5% Nb, 0.5-2.2% Ti, 0.05-1.0% Al, 0.005-0.040% C, balance Ni plus incidental impurities and a ratio of Nb/(Al+Ti) in the range of 2.5-7.5. To facilitate formability, the composition range of the alloy is balanced to be Laves phase free.
    Type: Application
    Filed: November 18, 2008
    Publication date: January 20, 2011
    Applicant: HUNTINGTON ALLOYS CORPORATION
    Inventor: Sarwan Kumar Mannan