Directionally Solidified Patents (Class 148/404)
  • Patent number: 10995768
    Abstract: A compressor rotor of a turbomachine includes a rotor disk; a rotor hub forming or connected to a radially outer edge of the rotor disk; and a plurality of rotor blades on the rotor hub extending radially outwards. The rotor hub includes an axially frontal leading edge, an axially rear trailing edge, a top side, a frontal bottom side extending on a bottom side of the rotor hub from the leading edge in a direction of the rotor disk and transitioning into same, and a rear bottom side extending on the bottom side from the trailing edge in the direction of the rotor disk and transitioning into same. The frontal bottom side and/or the rear bottom side of the hub is contoured in a circumferential direction of the rotor hub to form respectively one indentation in an area below a rotor blade.
    Type: Grant
    Filed: October 20, 2017
    Date of Patent: May 4, 2021
    Assignee: Rolls-Royce Deutschland Ltd & Co KG
    Inventor: Erik Johann
  • Patent number: 10975700
    Abstract: A turbine blade designing method is for designing a turbine blade formed using a metal material in which creep including diffusion creep and dislocation creep occurs by heating. The turbine blade designing method includes: acquiring temperature distribution data relating to temperature distribution in the turbine blade to be heated; acquiring creep strength distribution data relating to distribution of the creep strength required for the turbine blade to be heated; from the correlation data, based on the temperature distribution data and the creep strength distribution data, setting the crystal grain size of a high-temperature portion that is the diffusion creep temperature range of the turbine blade to a size coarser than the reference crystal grain size, and setting the crystal grain size of a low-temperature portion that is the dislocation creep temperature range of the turbine blade to a size finer than the reference crystal grain size.
    Type: Grant
    Filed: August 22, 2016
    Date of Patent: April 13, 2021
    Assignee: MITSUBISHI HEAVY INDUSTRIES, LTD.
    Inventors: Hideaki Kaneko, Kenji Yamamoto, Takanori Karato, Norifumi Hirata, Naoya Fujita
  • Patent number: 10752978
    Abstract: The novel nickel-base superalloy useful in an additive manufacturing process or a powder-based manufacturing process includes the following composition in wt %: Cr 8.0-8.5; Co 9.0-9.5; Mo 0.4-0.6; W 9.3-9.7; Ta 2.9-3.6; Al 4.9-5.6; Ti 0.2-1.0; Hf 0-0.05; C 0.005-0.03; B 0.005-0.02; Zr 0.005-0.1; Nb 0.2-1; Mn 0-0.6; and S 0-0.002 (?20 ppm); the balance nickel and incidental elements and unavoidable impurities.
    Type: Grant
    Filed: September 6, 2017
    Date of Patent: August 25, 2020
    Assignee: ROLLS-ROYCE plc
    Inventors: Mark C. Hardy, Grant J. Gibson, Gavin J. Baxter, Yogiraj Pardhi
  • Patent number: 10577948
    Abstract: The invention relates to a blade for use in a turbine of an aircraft engine. The blade is made of (a) a Mo-based alloy strengthened by intermetallic silicides or (b) a Ni-based single crystal superalloy. An aircraft engine and in particular, a turbofan aircraft engine including a corresponding turbine blade is also disclosed.
    Type: Grant
    Filed: October 29, 2015
    Date of Patent: March 3, 2020
    Assignee: MTU AERO ENGINES AG
    Inventors: Wilfried Smarsly, Markus Fried, Thomas Goehler
  • Patent number: 10550452
    Abstract: A high creep-resistant equiaxed grain nickel-based superalloy. The high creep-resistant equiaxed grain nickel-based superalloy is characterized that the chemical compositions in weight ratios include Cr in 8.0 to 9.5 wt %, W in 9.5 to 10.5 wt %, Co in 9.5 to 10.5 wt %, Al in 5.0 to 6.0 wt %, Ti in 0.5 to 1.5 wt %, Mo in 0.5 to 1.0 wt %, Ta in 2.5 to 4.0 wt %, Hf in 1.0 to 2.0 wt %, Ir in 2.0 to 4.0 wt %, C in 0.1 to 0.2 wt %, B in 0.01 to 0.1 wt %, Zr in 0.01 to 0.10 wt %, and the remaining part formed by Ni and inevitable impurities.
    Type: Grant
    Filed: June 27, 2017
    Date of Patent: February 4, 2020
    Assignee: NATIONAL CHUNG SHAN INSTITUTE OF SCIENCE AND TECHNOLOGY
    Inventors: Chien-Hung Liao, Hui-Yun Bor, Cuo-Yo Nieh, Chao-Nan Wei, Sz-Hen Chen, Po-Han Chu
  • Patent number: 10513783
    Abstract: To provide a chromium-free paint composition which can provide paint films which are excellent in terms of corrosion resistance on the edge surfaces, scratched surfaces and worked parts of a pre-coated steel sheet, and the paint films which can be obtained by coating this chromium-free paint composition. A chromium-free paint composition which includes paint film-forming resin (A), anti-rust pigment (B), comprising at least one type of amorphous MgO—V2O5-based compound, and crosslinking agent (C) which is characterized in that the mass content proportion of the aforementioned anti-rust pigment (B) is from 10 to 80 mass % with respect to the sum of the resin solid fraction mass of the aforementioned paint film-forming resin (A) and the aforementioned crosslinking agent (C), and the overall eluted ion content in a 10% aqueous solution of the aforementioned anti-rust pigment (B) is from 10 ppm to 100 ppm.
    Type: Grant
    Filed: December 4, 2012
    Date of Patent: December 24, 2019
    Assignee: BASF COATINGS GMBH
    Inventors: Takahiro Tsujita, Nobuhiro Nishida, Yoshitomo Takeuchi, Katsuhiko Ohsawa
  • Patent number: 10472701
    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: 0.3% or more and less than 4.0%, Al: more than 3.0% and less than 5.0%, Ti: more than 1.0% and less than 3.0%, and Ta: 0.01% or more and less than 2.0%, with the balance being unavoidable impurities and Ni, in which the component composition satisfies the following two relationships: 3.5?([Ti]+[Nb]+[Ta])/[Al]×10<6.5 and 9.5?[Al]+[Ti]+[Nb]+[Ta]<13.0.
    Type: Grant
    Filed: January 12, 2017
    Date of Patent: November 12, 2019
    Assignee: DAIDO STEEL CO., LTD.
    Inventors: Mototsugu Osaki, Shigeki Ueta, Kohki Izumi
  • Patent number: 10458339
    Abstract: A gas turbine engine component has an engine case structure surrounding an engine center axis. A plurality of holes are formed in the engine case structure, wherein the holes are circumferentially spaced apart from each other about the engine center axis. The plurality of holes includes at least one balance hole and at least one service hole that is configured to allow another engine component to pass through the at least one service hole. At least one cover is configured to cover at least one balance hole such that air is prevented from passing through the at least one balance hole.
    Type: Grant
    Filed: January 12, 2016
    Date of Patent: October 29, 2019
    Assignee: United Technologies Corporation
    Inventors: Christopher Treat, Alexander Broulidakis, Andrew D. Burdick
  • Patent number: 10457424
    Abstract: This flexible thermal-control material (10A) is obtained by stacking: a reflective layer (12) which reflects sunlight; and an infrared-ray emission layer (13) which emits infrared rays. The infrared-ray emission layer (13) is configured from a radiation-crosslinked fluororesin material. Accordingly, a flexible thermal-control material is achieved which satisfies all of a plurality of conditions related to solar absorption (?), total hemispheric infrared ray emissivity (?), radiation resistance, and atomic oxygen resistance.
    Type: Grant
    Filed: August 26, 2014
    Date of Patent: October 29, 2019
    Assignee: MITSUBISHI HEAVY INDUSTRIES, LTD.
    Inventors: Naoki Kusaba, Hidetaka Kafuku, Kenji Najima
  • Patent number: 10364189
    Abstract: Methods for forming ceramic cores are disclosed. A ceramic core formed using the method of the present application includes a silica depletion zone encapsulating an inner zone. The inner zone includes mullite and the silica depletion zone includes alumina. The method includes heat-treating a ceramic body in a non-oxidizing atmospheric condition for an effective temperature and time combination at a pressure less than 10?2 atmosphere to form the silica depletion zone at a surface of the ceramic core.
    Type: Grant
    Filed: May 4, 2017
    Date of Patent: July 30, 2019
    Assignee: General Electric Company
    Inventors: Anthony Yu-Chung Ku, Xi Yang, Tao Li, John Patrick Pollinger, Zachary Kenneth Mowry, Frederic Joseph Klug
  • Patent number: 10315218
    Abstract: A method for repairing a Ni-based alloy component includes preparing a surface of the Ni-based alloy component for receiving a cold spray repair; spraying a stream of particles onto a the surface of the Ni-based alloy component to form a coating thereon; and removing any over-spray on the surface of the Ni-based alloy component. The particles are formed from an alloy material having a melting point such that the particles are sprayed at a spray temperature that is less than the melting point of the alloy material.
    Type: Grant
    Filed: July 6, 2017
    Date of Patent: June 11, 2019
    Assignee: General Electric Company
    Inventors: Anantharaman Mahalingam, Prabhakaran Manogharan, Shalini Thimmegowda, Eklavya Calla, Gopi Chandran Ramachandran
  • Patent number: 10309018
    Abstract: A composite article includes a substrate, at least one protective layer on the substrate, and an intermediate layer between the protective layer and the substrate. The intermediate layer includes a first material that occupies a first continuous region and a second material that occupies a second continuous region next to the first continuous region. The first continuous region and the second continuous region are each in contact with the substrate and the protective layer.
    Type: Grant
    Filed: May 31, 2011
    Date of Patent: June 4, 2019
    Assignee: UNITED TECHNOLOGIES CORPORATION
    Inventors: Wayde R. Schmidt, Paul Sheedy
  • Patent number: 10273809
    Abstract: In one example embodiment, a blade includes an attachment region, an airfoil extending from the attachment region, and a blade cooling arrangement. The blade cooling arrangement includes at least a first feed passage disposed through the attachment region, which is connected to a first cooling passage disposed in the airfoil. A passively actuated first coolant valve is disposed in or proximate the first feed passage. A plurality of such blades can be disposed in a turbine section of an engine.
    Type: Grant
    Filed: December 8, 2014
    Date of Patent: April 30, 2019
    Assignee: United Technologies Corporation
    Inventors: Lane Thornton, Thomas N. Slavens
  • Patent number: 10246768
    Abstract: The present invention relates to metal micron-sized single crystals having a controlled curvature, which can be either fully or partially nanoporous; and to a process for growing of such single crystals from the confined volume of droplets of a eutectic composition melt comprising said metal as one of the two eutectic components, with no need of any fabrication steps.
    Type: Grant
    Filed: April 1, 2015
    Date of Patent: April 2, 2019
    Assignee: TECHNION RESEARCH & DEVELOPMENT FOUNDA
    Inventors: Boaz Pokroy, Maria Koifman Khristosov
  • Patent number: 10196711
    Abstract: A method for producing metal alloys. The method allows the production of metal alloys consisting of at least two metals having a high melting point difference. Here, the higher melting metal is melted first and the lower melting metal is melted with a delay by means of heat transfer whereupon the metals mix together. This enables to obtain metal alloys with high purity and low evaporation losses, which in particular allow the use of contaminated starting components such as recycled metal.
    Type: Grant
    Filed: November 25, 2015
    Date of Patent: February 5, 2019
    Assignee: ALD VACUUM TECHNOLOGIES GMBH
    Inventors: Jochen Flinspach, Frank Kunde, Thomas Hanselmann, Markus Mangelsen
  • Patent number: 10106875
    Abstract: A steel material includes: a composition containing, by mass, C: 0.05% to 0.60%, Si: 0.01% to 2.0%, Mn: 0.3% to 3.0%, P: 0.001% to 0.040%, S: 0.0001% to 0.010%, N: 0.0001% to 0.0060%, Al: 0.01% to 1.5%, one or more elements selected from Ti: 0.01% to 0.20%, Nb: 0.01% to 0.20%, and V: 0.01% or more and less than 0.05%, and one or more elements selected from B: 0.0001% to 0.01%, Mo: 0.005% to 2.0%, and Cr: 0.005% to 3.0%, with the balance being Fe and inevitable impurities; and a steel microstructure that includes 95% or more of tempered martensite on a volume fraction basis, that includes a precipitate having a diameter of 100 nm or less and including one or more elements selected from Ti, Nb, and V and one or more elements selected from carbon and nitrogen at a density of 50 particles/?m2 or more, and that includes prior austenite having a grain diameter of 3 ?m or more.
    Type: Grant
    Filed: March 28, 2014
    Date of Patent: October 23, 2018
    Assignee: JFE Steel Corporation
    Inventors: Shusaku Takagi, Akihide Nagao
  • Patent number: 10047611
    Abstract: The present disclosure provides a fir tree coupling for gas turbine engine parts comprising a load beam having a longitudinal axis, a rounded base, a first side, and a second side, wherein the rounded base has a radius of curvature from the first side to the second side, a tooth running parallel to the longitudinal axis and disposed on the first side of the load beam. The fir tree coupling may comprise a channel through the rounded base across a portion of the radius of curvature from the first side to the second side. The channel may comprise a sidewall having a sidewall step cut into a portion of the channel sidewall.
    Type: Grant
    Filed: January 28, 2016
    Date of Patent: August 14, 2018
    Assignee: United Technologies Corporation
    Inventors: Charles Thistle, Mohamed Hassan
  • Patent number: 10024192
    Abstract: A ceramic component for a turbomachine, the ceramic component (1) being configured to be destroyed in response to a contacting with another component (2) of the turbomachine that moves relative to the ceramic component (1). A turbomachine component pairing and a turbomachine including such a ceramic component.
    Type: Grant
    Filed: July 2, 2014
    Date of Patent: July 17, 2018
    Assignee: MTU Aero Engines AG & Co. KG
    Inventors: Norbert Schinko, Janine Sangl, Stephan Klaen, Markus Schlemmer
  • Patent number: 9932657
    Abstract: The present invention provides a Ni-based single crystal superalloy which has the following composition by weight: 0.1 wt % or more and 9.9 wt % or less of Co, 5.1 wt % or more and 10.0 wt % or less of Cr, 1.0 wt % or more and 4.0 wt % or less of Mo, 8.1 wt % or more and 11.0 wt % or less of W, 4.0 wt % or more and 9.0 wt % or less of Ta, 5.2 wt % or more and 7.0 wt % or less of Al, 0.1 wt % or more and 2.0 wt % or less of Ti, 0.05 wt % or more and 0.3 wt % or less of Hf, 1.0 wt % or less of Nb and less than 3.0 wt % of Re with the remainder including Ni and unavoidable impurities. This Ni-based single crystal superalloy has a low Re content and also has excellent high-temperature strength, mainly creep strength.
    Type: Grant
    Filed: September 18, 2015
    Date of Patent: April 3, 2018
    Assignee: IHI CORPORATION
    Inventors: Yasuhiro Aoki, Akihiro Sato
  • Patent number: 9850766
    Abstract: A blade cascade for a turbomachine, having a number of blades which include a monocrystalline material, each blade having a crystal orientation value, which is dependent on a crystal of first blades being less than a first limiting value and the crystal orientation values of second blades being at least equal to the first limiting value; and the blade cascade having at least one first sector, which includes at least three successive first blades, and having at least one second sector, which includes at least three successive second blades; and/or at least one first blade has a first body arrangement having at least one first body mounted so it is movable on the first blade and at least one second blade has a second body arrangement, which differs therefrom, having at least one second body mounted so it is movable on the second blade.
    Type: Grant
    Filed: December 15, 2014
    Date of Patent: December 26, 2017
    Assignee: MTU Aero Engines AG
    Inventors: Andreas Hartung, Frank Stiehler, Martin Pernleitner
  • Patent number: 9828661
    Abstract: The present invention relates to a nickel-based super heat resistant alloy and a method of manufacturing the same. In the nickel-based super heat resistant alloy according to the present invention, an amount of solid solution strengthening elements (chromium, cobalt, molybdenum, or tantalum) is adjusted to improve a mechanical property, such as a creep property, at high temperatures, and aluminum or titanium is included in a predetermined amount to improve a corrosion property. The nickel-based super heat resistant alloy has excellent elongation, strength, and creep properties at normal temperature and high temperatures, and thus it is possible to manufacture parts of, by way of non-limiting example, a thermoelectric power plant, an aircraft, or a very high temperature reactor in various shapes on a large scale.
    Type: Grant
    Filed: October 16, 2014
    Date of Patent: November 28, 2017
    Assignee: Korea Atomic Energy Research Institute
    Inventors: Dong-Jin Kim, Hong Pyo Kim, Yun-Soo Lim, Sung-Woo Kim, Byung-Hak Moon, Sujin Jung
  • Patent number: 9816161
    Abstract: Provided is a Ni-based single crystal superalloy containing 6% by mass or more and 12% by mass or less of Cr, 0.4% by mass or more and 3.0% by mass or less of Mo, 6% by mass or more and 10% by mass or less of W, 4.0% by mass or more and 6.5% by mass or less of Al, 0% by mass or more and 1% by mass or less of Nb, 8% by mass or more and 12% by mass or less of Ta, 0% by mass or more and 0.15% by mass or less of Hf, 0.01% by mass or more and 0.2% by mass or less of Si, and 0% by mass or more and 0.04% by mass or less of Zr, and optionally containing at least one element selected from B, C, Y, La, Ce, and V, with a balance being Ni and inevitable impurities.
    Type: Grant
    Filed: July 30, 2013
    Date of Patent: November 14, 2017
    Assignees: MITSUBISHI HITACHI POWER SYSTEMS, LTD., NATIONAL INSTITUTE FOR MATERIALS SCIENCE
    Inventors: Kyoko Kawagishi, Hiroshi Harada, Tadaharu Yokokawa, Yutaka Koizumi, Toshiharu Kobayashi, Masao Sakamoto, Michinari Yuyama, Masaki Taneike, Ikuo Okada, Sachio Shimohata, Hidetaka Oguma, Ryota Okimoto, Keizo Tsukagoshi, Yoshitaka Uemura, Junichiro Masada, Shunsuke Torii
  • Patent number: 9765633
    Abstract: A blade cascade for a turbomachine, having a number of blades (11, . . . 14; 21, . . . 25; 31, . . . 37) which include a monocrystalline material, each blade having a crystal orientation value (|?|), which is dependent on a crystal orientation of the monocrystalline material of the blade; the crystal orientation values of first blades (11, . . . 14) being less than a first limiting value and the crystal orientation values of second blades (21, . . . 25; 31, . . . 37) being at least equal to the first limiting value; and the blade cascade having at least one first sector (1), which includes at least three successive first blades (14, 12, 11, 13), and having at least one second sector (2+3; 2?+3?; 2?+3?), which includes at least three successive second blades (22, 21, 23, 24, 25; 31, 34, 36, 37, 33, 32, 35).
    Type: Grant
    Filed: December 9, 2014
    Date of Patent: September 19, 2017
    Assignee: MTU Aero Engines AG
    Inventor: Andreas Hartung
  • Patent number: 9650900
    Abstract: An engine component includes a body; and a plurality of cooling holes formed in the body, at least one of the cooling holes having a multi-lobed shape with at least a first lobe, a second lobe, and a third lobe.
    Type: Grant
    Filed: May 7, 2012
    Date of Patent: May 16, 2017
    Assignee: HONEYWELL INTERNATIONAL INC.
    Inventors: Malak Fouad Malak, Rajiv Rana, Luis Tapia, David Chou, Jong Liu
  • Patent number: 9518311
    Abstract: A nickel-base superalloy for single crystal casting of components exhibiting excellent creep and rupture properties at high temperature and stresses, and which exhibits excellent phase stability contains 5.60% to 5.80% by weight of aluminum; 9.4% to 9.8% by weight of cobalt; 3.2% to 3.9% by weight of chromium; 7.8% to 8.5% by weight of tantalum; 5.3% to 5.7% by weight of tungsten; 0.50% to 0.70% by weight of molybdenum; 4.3% to 4.9% by weight of rhenium; 0.75% to 0.90% by weight of titanium; 0.08% to 0.15% by weight of hafnium; less than 1.1% by weight of tramp elements other than aluminum, cobalt, chromium, tantalum, tungsten, molybdenum, rhenium, titanium and nickel; and balance nickel.
    Type: Grant
    Filed: May 8, 2014
    Date of Patent: December 13, 2016
    Assignee: Cannon-Muskegon Corporation
    Inventors: Kenneth Harris, Jacqueline B. Wahl
  • Patent number: 9393620
    Abstract: A gas turbine airfoil having internal cooling passages is formed by additive manufacturing. Layers of superalloy powder are fused by an energy beam using a two-dimensional pattern providing unmelted areas forming passageways therein. Layers of the powder are added and fused using sufficient two-dimensional patterns to form the entire airfoil with the desired pattern of internal cooling passages. After completion of the formation of the airfoil, it may be hot isostatic pressed, directionally recrystallized, bond coated, and covered with a thermal barrier layer.
    Type: Grant
    Filed: December 14, 2012
    Date of Patent: July 19, 2016
    Assignee: United Technologies Corporation
    Inventors: Daniel A. Bales, Agnes Klucha, Gregory M. Dolansky
  • Patent number: 9150945
    Abstract: A multi-component high-entropy alloy includes a composition selected from the following group: VNbTaTiMoWRe, VNbTaTiMoW, VNbTaTiMoRe, VNbTaTiWRe, VNbTaMoWRe, VNbTiMoWRe, VTaTiMoWRe, NbTaTiMoWRe, VNbTaTiMo, VNbTaTiW, VNbTaMoW, VNbTiMoW, VTaTiMoW, NbTaTiMoW, VNbTaTiRe, VNbTaMoRe, VNbTiMoRe, VTaTiMoRe, NbTaTiMoRe, VNbTaWRe, VNbTiWRe, VTaTiWRe, NbTaTiWRe, VNbMoWRe, VTaMoWRe, NbTaMoWRe, VTiMoWRe, NbTiMoWRe, TaTiMoWRe, wherein relative amounts of each element vary by no more than ±15 atomic %.
    Type: Grant
    Filed: October 27, 2011
    Date of Patent: October 6, 2015
    Assignee: UT-BATTELLE, LLC
    Inventor: Hongbin Bei
  • Patent number: 9061947
    Abstract: Articles are described that include a substrate having thereon a coating that has two or more non-oxide compounds. A first one of the two or more non-oxide compounds is a non-oxide ceramic compound, and the two or more non-oxide compounds are present in relative amounts with respect to each other to form a eutectic composition mixture. The coating includes at least two discrete phases arranged in an interpenetrating three-dimensional microstructure.
    Type: Grant
    Filed: November 2, 2010
    Date of Patent: June 23, 2015
    Assignee: Lockheed Martin Corporation
    Inventors: Gautham Ramachandran, Sanjay Prasad, Scott W. Smith
  • Patent number: 8926897
    Abstract: A nickel-base superalloy having excellent oxidation resistance is provided. It is useful as high-temperature members such as turbine blades and turbine vanes for jet engines or gas turbines. The nickel-base superalloy has a composition containing Co: 0.1 to 15% by weight, Cr: 0.1 to 10% by weight, Mo: 0.1 to 4.5% by weight, W: 0.1 to 15% by weight, Al: 2 to 8% by weight, Ta+Nb+Ti: 0 to 16% by weight, Hf: 0 to 5% by weight, Re: 0.1 to 16% by weight, Ru: 0.1 to 16% by weight, Si: 0.2 to 5% by weight and a balance made of Ni and unavoidable impurities.
    Type: Grant
    Filed: September 27, 2006
    Date of Patent: January 6, 2015
    Assignee: National Institute for Materials Science
    Inventors: Hiroshi Harada, Kyoko Kawagishi, Toshiharu Kobayashi, Yutaka Koizumi, Atsushi Sato
  • Patent number: 8876471
    Abstract: In accordance with an exemplary embodiment, a turbine stator component includes a first endwall; a second endwall; a first stator airfoil coupled between the first and second endwalls; and a second stator airfoil adjacent to the first airfoil and coupled between the first and second endwalls. The first stator airfoil has first crystallographic primary and secondary orientations. The second stator airfoil has second crystallographic primary and secondary orientations, the first crystallographic primary and secondary orientations being different from the second crystallographic primary and secondary orientations.
    Type: Grant
    Filed: May 6, 2013
    Date of Patent: November 4, 2014
    Assignee: Honeywell International Inc.
    Inventors: Mark C. Morris, Harry Lester Kington, James Neumann
  • Patent number: 8852363
    Abstract: The invention offers a magnesium alloy sheet material having excellent plastic processibility and rigidity and a magnesium alloy formed body having excellent rigidity. The sheet material has magnesium alloy that forms the matrix containing hard particles. The region from the surface of the sheet material to a position away from the surface by 40% of the thickness of the sheet material is defined as the surface region, and the remaining region as the center region. Hard particles existing in the center region have a maximum diameter of more than 20 ?m and less than 50 ?m, and hard particles existing in the surface region have a maximum diameter of 20 ?m or less. Because the hard particles existing at the surface side are fine particles, they are less likely to become the starting point of cracking or another defect at the time of plastic processing. Because the hard particles existing in the center region are coarse, they can increase the rigidity of the sheet material.
    Type: Grant
    Filed: January 14, 2009
    Date of Patent: October 7, 2014
    Assignee: Sumitomo Electric Industries, Ltd.
    Inventors: Masatada Numano, Nozomu Kawabe, Yukihiro Oishi, Nobuyuki Mori, Nobuyuki Okuda, Ryuichi Inoue
  • Publication number: 20140290804
    Abstract: To carry out a rotational casting method of preparing a silicon eutectic alloy composition, silicon and one or more metallic elements M are melted together to form a eutectic alloy melt comprising the silicon and the one or more metallic elements M. A mold containing the eutectic alloy melt is rotated about a longitudinal axis thereof at a speed sufficient to form a rotating volume of the eutectic alloy melt in contact with an inner surface of the mold. Heat is directionally removed from the rotating volume of the eutectic alloy melt to directionally solidify the eutectic alloy melt, and a eutectic alloy composition, which includes the silicon, the one or more metallic elements M, and a eutectic aggregation of a first phase comprising the silicon and a second phase of formula MSi2, where the second phase is a disilicide phase, is formed.
    Type: Application
    Filed: June 16, 2014
    Publication date: October 2, 2014
    Inventors: Zachary Bauer, Jeremy Beebe, Matthew Gave, Daren Roehl, Vasgen Shamamian, Randall Siegel, Joseph Sootsman, James Young
  • 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: 8366838
    Abstract: A single crystal alloy for high AN2 applications has a composition consisting essentially of from 4.0 to 10 wt % chromium, from 1.0 to 2.5 wt % molybdenum, up to 5.0 wt % tungsten, from 3.0 to 8.0 wt % tantalum, from 5.5 to 6.25 wt % aluminum, from 6.0 to 17 wt % cobalt, up to 0.2 wt % hafnium, from 4.0 to 6.0 wt % rhenium, from 1.0 to 3.0 wt % ruthenium, and the balance nickel. Further, these single crystal alloys have a total tungsten and molybdenum content in the range of from 1.0 to 7.5 wt %, preferably from 2.0 to 7.0 wt %, a total refractory element content in the range of from 9.0 to 24.5 wt %, preferably from 13 to 22 wt %, a ratio of rhenium to a total refractory element content in the range of from 0.16 to 0.67, preferably from 0.20 to 0.45, a density in the range of from 0.300 to 0.325 lb/in3, and a specific creep strength in the range from 106×103 to 124×103 inches.
    Type: Grant
    Filed: December 9, 2009
    Date of Patent: February 5, 2013
    Assignee: United Technologies Corporation
    Inventors: Venkatarama K. Seetharaman, Alan D. Cetel
  • Patent number: 8226780
    Abstract: This ferrite-austenite stainless steel sheet includes: in terms of mass %, C: 0.1% or less; Cr: 17 to 25%; Si: 1% or less; Mn: 3.7% or less; Ni: 0.6 to 3%; Cu: 0.1 to 3%; and N: 0.06% or more and less than 0.15%, with the remainder being Fe and inevitable impurities, wherein the steel sheet has a two-phase structure consisting of a ferrite phase and an austenite phase, a volume fraction of the austenite phase is in a range of 15 to 70%, and in a sheet plane (ND) of a center of a sheet thickness, grains of the ferrite phase having a crystal orientation satisfying ND//{111}±10° and grains of the ferrite phase having a crystal orientation satisfying ND//{101}±10° are present in a total content of 10% by area or more.
    Type: Grant
    Filed: January 30, 2009
    Date of Patent: July 24, 2012
    Assignees: Nippon Steel, Sumikin Stainless Steel Corporation
    Inventors: Masaharu Hatano, Akihiko Takahashi, Eiichiro Ishimaru, Ken Kimura
  • Patent number: 8186995
    Abstract: A fire-starter device for survival or emergency use has a handle portion and case portion that twist together, to sheath a mischmetal flint rod inside the case, and a seal ring protects the flint rod from environmental moisture. The case has a steel strike plate and a guide channel. The mischmetal flint rod favorably has a composition of cerium—50%, lanthanum—26%, magnesium—10%, praseodymium—3%, neodymium—1%, and iron—10%.
    Type: Grant
    Filed: February 25, 2009
    Date of Patent: May 29, 2012
    Inventor: Andrew C. Putrello, Jr.
  • Patent number: 7892370
    Abstract: The invention relates to a heat treatment method for monocrystalline or directionally solidified structural components. Said method comprises a heat treatment which results in dissolving at least one crystalline phase of the material of the structural component, referred to in the following as component material. The inventive method is characterized by carrying out the heat treatment by heating the structural component to a dissolution temperature required for dissolving the crystalline phase only in at least one first component area in which the stresses within the component material do not exceed a predetermined value. In at least one second component area in which the stresses within the component material exceed the predetermined value the material is only heated to a temperature below the dissolution temperature.
    Type: Grant
    Filed: April 28, 2005
    Date of Patent: February 22, 2011
    Assignee: Siemens Aktiengesellschaft
    Inventors: Michael Ott, Uwe Paul
  • Patent number: 7871247
    Abstract: A high modulus component, such as an aircraft engine turbine blade, is formed from a base metal that has a high modulus crystallographic orientation that is aligned with the primary, i.e. radial, direction of the turbine blade. The base metal is Ni, Fe, Ti, Co, Al, Nb, or Mo based alloy. Alignment of a high modulus direction of the base metal with the primary direction provides enhanced high cycle fatigue life.
    Type: Grant
    Filed: August 17, 2007
    Date of Patent: January 18, 2011
    Assignee: United Technologies Corporation
    Inventors: Dilip M. Shah, Alan D. Cetel, Alan W. Stoner, William P. Allen
  • Publication number: 20100108206
    Abstract: A method for improving the strength, creep and failure resistance of a single crystal component, such as a turbine engine component, is provided. The method comprises the steps of forming a component, such as a turbine engine component, having a single crystal microstructure with a plurality of ?? cuboids forming a limited amount of oriented platens in a particular direction prior to the component being placed into service to delay coalescence of the platens relative to the applied load.
    Type: Application
    Filed: February 3, 2006
    Publication date: May 6, 2010
    Inventors: Alexander Staroselsky, Carroll V. Sidwell
  • Patent number: 7704332
    Abstract: A single crystal alloy for high AN2 applications has a composition consisting essentially of from 4.0 to 10 wt % chromium, from 1.0 to 2.5 wt % molybdenum, up to 5.0 wt % tungsten, from 3.0 to 8.0 wt % tantalum, from 5.5 to 6.25 wt % aluminum, from 6.0 to 17 wt % cobalt, up to 0.2 wt % hafnium, from 4.0 to 6.0 wt % rhenium, from 1.0 to 3.0 wt % ruthenium, and the balance nickel. Further, these single crystal alloys have a total tungsten and molybdenum content in the range of from 1.0 to 7.5 wt %, preferably from 2.0 to 7.0 wt %, a total refractory element content in the range of from 9.0 to 24.5 wt %, preferably from 13 to 22 wt %, a ratio of rhenium to a total refractory element content in the range of from 0.16 to 0.67, preferably from 0.20 to 0.45, a density in the range of from 0.300 to 0.325 lb/in3, and a specific creep strength in the range from 106×103 to 124×103 inches.
    Type: Grant
    Filed: December 13, 2006
    Date of Patent: April 27, 2010
    Assignee: United Technologies Corporation
    Inventors: Venkatarama K. Seetharaman, Alan D. Cetel
  • Publication number: 20100071812
    Abstract: A process capable of producing large metallic castings having lengths of one hundred centimeters or more and a unidirectional crystal structure substantially free of freckle defects. The process includes pouring a molten metal alloy into a preheated mold within a heating zone, withdrawing the mold from the heating zone, through a heat shield, and into a cooling zone to directionally solidify the molten metal alloy, and then cooling the mold to produce the casting and the unidirectional crystal structure thereof. The heat shield operates as a barrier to thermal radiation between the heating zone and the cooling zone, and the mold is withdrawn at a rate that, in combination with the heat shield, maintains a thermal gradient to solidify the molten metal alloy and form primary dendrite arms having an average spacing therebetween of about 150 to about 500 micrometers.
    Type: Application
    Filed: September 25, 2008
    Publication date: March 25, 2010
    Applicant: General Electric Company
    Inventors: Jon Conrad Schaeffer, Stephen Joseph Balsone, Andrew J. Elliott
  • Patent number: 7473326
    Abstract: A Ni-base directionally solidified superalloy and a Ni-base single-crystal superalloy, which have superior creep strength at a high temperature, consists essentially of from 5.0 percent by weight to 7.0 percent by weight of Al, from 4.0 percent by weight to 16.0 percent by weight of Ta+Nb+Ti, from 1.0 percent by weight to 4.5 percent by weight of Mo, from 4.0 percent by weight to 8.0 percent by weight of W, from 3.0 percent by weight to 8.0 percent by weight of Re, 2.0 percent by weight or less of Hf, 10.0 percent by weight or less of Cr, 15.0 percent by weight or less of Co, from 1.0 percent by weight to 4.0 percent by weight of Ru, 0.2 percent by weight or less of C, 0.03 percent by weight or less of B, and Ni and inescapable impurities as a balance. The superalloys can be used for a turbine blade, a turbine vane and the like of a jet engine, an industrial gas turbine and the like.
    Type: Grant
    Filed: March 27, 2003
    Date of Patent: January 6, 2009
    Assignees: National Institute for Materials Science, Ishikawajima-Harima Heavy Industries Co., Ltd.
    Inventors: Toshiharu Kobayashi, Yutaka Koizumi, Tadaharu Yokokawa, Hiroshi Harada, Yasuhiro Aoki, Shouju Masaki
  • Patent number: 7465365
    Abstract: A method for forming a nanocomposite material and articles made with the nanocomposite material are presented.
    Type: Grant
    Filed: June 8, 2005
    Date of Patent: December 16, 2008
    Assignee: General Electric Company
    Inventor: Thomas Martin Angeliu
  • Publication number: 20080289727
    Abstract: A method for forming a nanocomposite material and articles made with the nanocomposite material are presented.
    Type: Application
    Filed: June 8, 2005
    Publication date: November 27, 2008
    Inventor: Thomas Martin Angeliu
  • Patent number: 7338259
    Abstract: A high modulus component, such as an aircraft engine turbine blade, is formed from a base metal that has a high modulus crystallographic orientation that is aligned with the primary, i.e. radial, direction of the turbine blade. The base metal is Ni, Fe, Ti, Co, Al, Nb, or Mo based alloy. Alignment of a high modulus direction of the base metal with the primary direction provides enhanced high cycle fatigue life.
    Type: Grant
    Filed: March 2, 2004
    Date of Patent: March 4, 2008
    Assignee: United Technologies Corporation
    Inventors: Dilip M. Shah, Alan D. Cetel, Alan W. Stoner, William P. Allen
  • Patent number: 7250088
    Abstract: A method and an apparatus for manufacturing a directionally solidified columnar grained article with a reduced amount of secondary misorientation of the columnar grains. The method employs a casting assembly comprising a mold with a cavity, a selector section at a lower end of the mold, a heating chamber and a cooling chamber. The mold is fed with a liquid metal and moved from the heating chamber to the cooling chamber where the columnar grained article is solidified. The article is solidified with at least two dendrites or grains emerging from the selector section and entering the main cavity of the shell mold. Further, the selector section is configured so that no dendrite or grain grows from the bottom of the selector section into the shell mold cavity along a continuous path of purely vertical growth.
    Type: Grant
    Filed: January 31, 2003
    Date of Patent: July 31, 2007
    Assignee: Alstom
    Inventor: John Fernihough
  • Patent number: 6918969
    Abstract: A cast steel with excellent workability, characterized in that not less than 60% of the total cross section thereof is occupied by equiaxed crystals, the diameters (mm) of which satisfy the following formula: D<1.2X1/3+0.75, wherein D designates each diameter (mm) of equiaxed crystals in terms of internal structure in which the crystal orientations are identical, and X the distance (mm) from the surface of the cast steel. The cast steel and the steel material obtained by processing the cast steel have very few surface flaws and internal defects.
    Type: Grant
    Filed: August 16, 2002
    Date of Patent: July 19, 2005
    Assignee: Nippon Steel Corporation
    Inventors: Masafumi Zeze, Takashi Morohoshi, Ryusuke Miura, Shintaro Kusunoki, Yasuhiro Kinari, Masayuki Abe, Hiroshi Sugano, Kenichiro Miyamoto, Masaharu Oka, Yuji Koyama
  • Patent number: 6905558
    Abstract: A billet produced by continuous casting having little central segregation, in particular a billet of high carbon steel produced by continuous casting, and a manufacturing method therefor are provided. In the continuous casting billet, the size of the dendritic equiaxed crystal in a billet central portion is reduced to be not more than 6 mm. For this purpose, electromagnetic stirring is performed so that the inclining angle of the primary dendrite within 10 mm of a billet surface layer is increased to be not less than 10°. Furthermore, the mechanical soft reduction is performed during continuous casting so that the diameter of the center porosity in the billet central portion is reduced to be not more than 4 mm. Thereby, in particular in the manufacturing of the continuous casting billet having a carbon content of not less than 0.
    Type: Grant
    Filed: November 6, 2002
    Date of Patent: June 14, 2005
    Assignee: Nippon Steel Corporation
    Inventors: Shigenori Tanaka, Toyoichiro Higashi, Masahiro Doki, Jun Fukuda, Hiroshi Ohba, Mitsuo Uchimura
  • Patent number: 6841013
    Abstract: A metallic nanowire having an aspect ratio of at least 100 and a diameter less than 200 nanometers composed of at least one of bismuth, indium, tin, lead, zinc, antimony and alloys of the same and a method of making the same from a thin film composite.
    Type: Grant
    Filed: January 28, 2003
    Date of Patent: January 11, 2005
    Assignee: General Motors Corporation
    Inventors: Anita Miriam Weiner, Curtis A. Wong, Yang-Tse Cheng, Michael P. Balogh, Michael J. Lukitsch
  • Publication number: 20040234808
    Abstract: A gas turbine component consists of a superalloy base material with a single crystal structure and a protective MCrAlY-coating (6). The MCrAlY-coating (6) has a g/g′ single crystal structure, which is epitaxial with the base material. It has be determined the critical factors for the successful epitaxial and crack-free growth of the MCrAlY-coating (6).
    Type: Application
    Filed: March 19, 2004
    Publication date: November 25, 2004
    Inventors: Alexander Schnell, Cyrille Bezencon, Matthias Hoebel, Abdus Suttar Khan, Maxim Konter, Wilfried Kurz