Molybdenum Or Tungsten Containing Patents (Class 420/448)
  • Patent number: 10941466
    Abstract: A Ni-base superalloy composition to be used for powder-based additive manufacturing (AM) technology, such as selective laser melting (SLM) or electron beam melting (EBM). The cracking susceptibility during an AM process is considerably reduced by controlling the amount of elements, especially Hf, that form low-melting eutectics.
    Type: Grant
    Filed: June 13, 2017
    Date of Patent: March 9, 2021
    Assignee: General Electric Technology GmbH
    Inventors: Roman Engeli, Thomas Etter, Fabian Geiger
  • Patent number: 10767246
    Abstract: A gamma prime nickel-based superalloy is provided, which can include a combination of Ti and Zr in a total weight amount sufficient to form cellular precipitates located at grain boundaries of the alloy, wherein the cellular precipitates define gamma prime arms that distort the grain boundaries at which they are located. The Hf-containing, gamma prime nickel-based superalloy and/or the gamma prime nickel-based superalloy can include cellular precipitates that are predominantly located at grain boundaries of the alloy such that the cellular precipitates define gamma prime arms that distort the grain boundaries at which they are located. The superalloys can further include finer gamma prime precipitates (e.g., cuboidal or spherical precipitates) than the cellular precipitates.
    Type: Grant
    Filed: August 17, 2015
    Date of Patent: September 8, 2020
    Assignee: General Electric Company
    Inventors: David Paul Mourer, Andrew Ezekiel Wessman
  • Patent number: 10710201
    Abstract: An Ni-based alloy solid wire for welding has a composition comprising specific amounts of Cr, Ti, Nb, C, S, Mn and Fe, where Mo+W, P, Si, Al, Ca, B, Mg, Zr, Co, O, H, and N are controlled to specific amounts, ([Ti]+[Nb])/[C] is 80 to 150, and the balance is Ni and inevitable impurities. [Ti], [Nb], and [C] represent the contents of Ti, Nb, and C (mass %), respectively.
    Type: Grant
    Filed: February 9, 2017
    Date of Patent: July 14, 2020
    Assignee: Kobe Steel, Ltd.
    Inventors: Tetsunao Ikeda, Hiroshi Sugahara, Hiroaki Kawamoto
  • 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: 10533240
    Abstract: A high temperature alloy is disclosed. The high temperature alloy may have on a weight basis: about 9.0-10.0 weight % of Co, about 0.25 weight % maximum of Fe, about 8.0-9.0 weight % of Cr, about 4.75-5.50 weight % of Al, about 1.0-1.5 weight % of Ti, about 0-2.0 weight % of Mo, about 6.0-9.0 weight %, of W, about 0.12-0.18 weight % of C, about 0.01-0.03 weight % of Zr, about 0.005-0.015 weight % of B, about 0.5-1.5 weight % of Ta, a balance of Ni, and incidental impurities.
    Type: Grant
    Filed: December 23, 2016
    Date of Patent: January 14, 2020
    Assignee: Caterpillar Inc.
    Inventors: Mark D. Veliz, Caian Qiu, Thomas J. Yaniak
  • Patent number: 10519795
    Abstract: Various implementations include a method of manufacturing a ring molded article. The ring molded article has two convex portions which respectively protrude on both sides of the ring molded article in a direction of a center axis thereof and extend in a direction of a circumference of the ring molded article. The ring material is placed inside two molds on which concave portions respectively corresponding to the convex portions are formed. The ring material is supported by a region on an outer peripheral side from an outer peripheral side corner in the concave portion of one of the two molds and a region on an inner peripheral side from an inner peripheral side corner in the concave portion of another of the two molds. The ring material is then forged so as to be pressed by the two molds in a direction of a center axis of the ring material.
    Type: Grant
    Filed: August 27, 2015
    Date of Patent: December 31, 2019
    Assignees: Hitachi Metals, Ltd., Nippon Institute of Technology
    Inventors: Jun Ohsone, Masayuki Watanabe, Hideo Takizawa
  • Patent number: 10266919
    Abstract: A nickel-base superalloy that includes 6.55% to 7.15% aluminum, 3.3% to 3.7% titanium, 1.2% to 1.7% tantalum, and 0.8% to 1.0% niobium, such that a combined atomic percentage of the aluminum, the titanium, the tantalum and the niobium is between 12.65% and 13.15% to provide substantially 51% to 53% by volume of gamma prime precipitates.
    Type: Grant
    Filed: July 1, 2016
    Date of Patent: April 23, 2019
    Assignee: ROLLS-ROYCE plc
    Inventors: Mark C Hardy, Roger C Reed, David Crudden
  • Patent number: 10260129
    Abstract: A high temperature, high strength Ni—Co—Cr alloy is provided. The alloy includes, in weight percent (wt. %): 23.5 to 25.5% Cr, 15.0 to 22.0% Co, 1.1 to 2.0% Al, 1.0 to 1.8% Ti, 0.95 to 2.2% Nb, less than 1.0% Mo, less than 1.0% Mn, up to 0.24% Si, less than 3.0% Fe, less than 0.3% Ta, less than 0.3% W, 0.005 to 0.08% C, 0.01 to 0.3% Zr, 0.0008 to 0.006% B, up to 0.05% rare earth metals, and a balance of Ni plus trace impurities.
    Type: Grant
    Filed: August 1, 2018
    Date of Patent: April 16, 2019
    Assignee: Huntington Alloys Corporation
    Inventors: Brian A. Baker, Gaylord D. Smith, Ronald D. Gollihue
  • Patent number: 10100388
    Abstract: Compositions are provided that exhibit an austenitic nickel microstructure. The compositions comprise Ni, Cr, Mo and at least one element selected from the group consisting of Al, Si, and Ti. Feedstock having the composition may be in the form of a cored wire or wires, a solid wire or wires, or a powder.
    Type: Grant
    Filed: May 15, 2014
    Date of Patent: October 16, 2018
    Assignee: Scoperta, Inc.
    Inventors: Justin Lee Cheney, Grzegorz Jan Kusinski
  • Patent number: 9771634
    Abstract: Processes for producing low nitrogen, essentially nitride-free chromium or chromium plus niobium-containing nickel-based alloys include charging elements or compounds which do not dissolve appreciable amounts of nitrogen in the molten state to a refractory crucible within a vacuum induction furnace, melting said elements or compounds therein under reduced pressure, and effecting heterogeneous carbon-based bubble nucleation in a controlled manner. The processes also include, upon cessation of bubble formation, adding low nitrogen chromium or a low nitrogen chromium-containing master alloy with a nitrogen content of below 10 ppm to the melt, melting and distributing said added chromium or chromium-containing master alloy throughout the melt, bringing the resulting combined melt to a temperature and surrounding pressure to permit tapping, and tapping the resulting melt, directly or indirectly, to a metallic mold and allowing the melt to solidify and cool under reduced pressure.
    Type: Grant
    Filed: November 5, 2014
    Date of Patent: September 26, 2017
    Assignee: Companhia Brasileira de Metalurgia e Mineração
    Inventor: Kleber A. Sernik
  • Patent number: 9752215
    Abstract: A composition of matter, comprising in combination, in atomic percent contents: a content of nickel as a largest content; 19.0-21.0 percent cobalt; 9.0-13.0 percent chromium; 1.0-3.0 percent tantalum; 0.9-1.5 percent tungsten; 7.0-9.5 percent aluminum; 0.10-0.25 percent boron; 0.09-0.20 percent carbon; 1.5-2.0 percent molybdenum; 1.1-1.5 percent niobium; 3.0-3.6 percent titanium; and 0.02-0.09 percent zirconium.
    Type: Grant
    Filed: February 14, 2012
    Date of Patent: September 5, 2017
    Assignee: United Technologies Corporation
    Inventors: Paul L. Reynolds, Jerry C. Capo, Darryl Slade Stolz
  • Patent number: 9574451
    Abstract: An object of the present invention is to provide a Ni-based superalloy, especially for a conventional casting, having a good balance among high temperature strength, corrosion resistance and oxidation resistance, as compared to a conventional material. The Ni-based superalloy comprises Cr, Co, Al, Ti, Ta, W, Mo, Nb, C, B, and inevitable impurities, the balance being Ni, the Ni-based superalloy having a superalloy composition comprising, by mass, 13.1 to 16.0% Cr, 11.1 to 20.0% Co, 2.30 to 3.30% Al, 4.55 to 6.00% Ti, 2.50 to 3.50% Ta, 4.00 to 5.50% W, 0.10 to 1.20% Mo, 0.10 to 0.90% Nb, 0.05 to 0.20% C, and 0.005 to 0.02% B.
    Type: Grant
    Filed: April 15, 2015
    Date of Patent: February 21, 2017
    Assignee: Mitsubishi Hitachi Power Systems, Ltd.
    Inventors: Yuting Wang, Akira Yoshinari
  • Patent number: 9376936
    Abstract: A turbine housing of an exhaust gas turbocharger, includes an outer housing in which an inner housing with a tubular nozzle and an outlet duct for connection to an exhaust gas system is arranged. The outlet duct is coupled with the tubular nozzle for movement relative to the nozzle via a seal ring. The seal ring is inwardly everted and pushed onto the nozzle and embraced by an inner-housing support ring, so that a fluid tight fit on the inner housing nozzle is ensured. The seal ring is further pushed onto the outlet duct and there also coupled onto the outlet duct with an outlet duct support ring in a fluid tight manner so that an especially durable connection is created. Both support rings are additionally coupled in a materially bonded manner with the seal ring and the outlet duct nozzle or with the inner housing.
    Type: Grant
    Filed: May 19, 2011
    Date of Patent: June 28, 2016
    Assignee: BENTELER AUTOMOBILTECHNIK GMBH
    Inventors: Christian Smatloch, Elmar Grussmann
  • Patent number: 9346132
    Abstract: A metal chemistry includes an amount of chromium weight of between about 9.0% and about 16% by weight, an amount of cobalt of between about 7.0% and about 14% by weight, an amount of molybdenum of between about 10% and about 20% by weight, an amount of iron of between about 1.0% and about 5.0% by weight, an amount of aluminum of between about 0.05% and about 0.75% by weight, an amount of titanium of between about 0.5% and about 2.0% by weight, an amount of manganese not to exceed about 0.8% by weight, an amount of carbon of between about 0.02% and about 0.10% by weight, an amount of a titanium+aluminum alloy of between about 0.55% and about 2.75% by weight, and an amount of nickel.
    Type: Grant
    Filed: January 22, 2015
    Date of Patent: May 24, 2016
    Assignee: GENERAL ELECTRIC COMPANY
    Inventors: Yan Cui, Srikanth Chandrudu Kottilingam, Dechao Lin, Brian Lee Tollison
  • Patent number: 9341081
    Abstract: A turbine housing of an exhaust gas turbocharger includes an outer housing, in which an inner housing with a tubular nozzle and an outlet duct for connection to an exhaust gas system is arranged, wherein the outlet duct is coupled to the tubular nozzle via a sealing lip for relative movement. The sealing lip is inwardly evertedly pushed onto the nozzle and for positional fixing, a sliding sleeve is further arranged on the nozzle, wherein the sliding sleeve and the nozzle form a gap in which an end of the sealing lip is received. This avoids that the sealing lip lifts of due to pressure differences and thus that gas leaks occur. Further, an end of the sealing lip is arranged so as to be thermally protected.
    Type: Grant
    Filed: May 19, 2011
    Date of Patent: May 17, 2016
    Assignee: BENTELER AUTOMOBILTECHNIK GMBH
    Inventors: Christian Smatloch, Elmar Grussmann
  • Patent number: 9101996
    Abstract: A multi component braze filler alloy is described having a melting temperature less than about 1235 deg. C. and greater than about 1150 deg. C. This alloy can be processed by hot isostatic pressing (HIP) at a temperature above about 1065 deg. C. and is particularly suited for the repair of gas turbine blades and vanes, especially those made from alloy 247. The relatively low Ti content in the present braze alloy tends to form less MC carbides at the joint interface, particularly in comparison with other braze alloys high in Zr and/or Hf.
    Type: Grant
    Filed: May 9, 2012
    Date of Patent: August 11, 2015
    Assignee: SIEMENS ENERGY, INC.
    Inventors: Kazim Ozbaysal, Sebastian Piegert
  • Patent number: 9074268
    Abstract: A metallic coating or alloy is provided. The metallic coating includes iron, cobalt, chromium, and aluminum. Tantalum may also be included. A new addition in nickel based coating with stabilized gamma/gamma? phases at high temperatures lead to a reduction of local stresses. A component including the metallic coating or alloy is also provided.
    Type: Grant
    Filed: March 23, 2010
    Date of Patent: July 7, 2015
    Assignee: SIEMENS AKTIENGESELLSCHAFT
    Inventors: Anand A. Kulkarni, Jonathan E. Shipper, Jr., Werner Stamm
  • Patent number: 9068251
    Abstract: A nickel-based superalloy is provided. Known nickel-based superalloys for producing components made of stem shaped single crystals do not provide sufficiently for grain boundary strength. The superalloy includes a low molybdenum content and very accurately adjusted values for elements having grain boundary strength and elements that precipitate in grain boundaries.
    Type: Grant
    Filed: October 20, 2009
    Date of Patent: June 30, 2015
    Assignees: SIEMENS AKTIENGESELLSCHAFT, HOWMET CORPORATION
    Inventors: Winfried Eβer, Dirk Goldschmidt, Christopher R. Hanslits, Michael Ott, Uwe Paul, Ursula Pickert, Russell G. Vogt
  • Publication number: 20150147226
    Abstract: It is an objective of the invention to provide a low cost Ni-based casting superalloy suitable for casting articles having a far better balance among a high-temperature mechanical strength, a grain boundary strength and a oxidation resistance than conventional Ni-based superalloy cast articles. There is provided an Ni-base casting superalloy including: in mass %, 0.03 to 0.15% of C; 0.005 to 0.04% of B; 0.01 to 1% of Hf; 0.05% or less of Zr; 3.5 to 4.9% of Al; 4.4 to 8% of Ta; 2.6 to 3.9% of Ti; 0.05 to 1% of Nb; 8 to 12% of Cr; 1 to 6.9% of Co; 4 to 10% of W; 0.1 to 0.95% of Mo; 0.02 to 1.1% of Si and/or 0.1 to 3% of Fe; and the balance including Ni and incidental impurities.
    Type: Application
    Filed: November 25, 2014
    Publication date: May 28, 2015
    Inventors: Akira YOSHINARI, Yuting WANG
  • Patent number: 9034248
    Abstract: An object of the present invention is to provide a Ni-based superalloy, especially for a conventional casting, having a good balance among high temperature strength, corrosion resistance and oxidation resistance, as compared to a conventional material. The Ni-based superalloy comprises Cr, Co, Al, Ti, Ta, W, Mo, Nb, C, B, and inevitable impurities, the balance being Ni, the Ni-based superalloy having a superalloy composition comprising, by mass, 13.1 to 16.0% Cr, 11.1 to 20.0% Co, 2.30 to 3.30% Al, 4.55 to 6.00% Ti, 2.50 to 3.50% Ta, 4.00 to 5.50% W, 0.10 to 1.20% Mo, 0.10 to 0.90% Nb, 0.05 to 0.20% C, and 0.005 to 0.02% B.
    Type: Grant
    Filed: December 22, 2011
    Date of Patent: May 19, 2015
    Assignee: Mitsubishi Hitachi Power Systems, Ltd.
    Inventors: Yuting Wang, Akira Yoshinari
  • Publication number: 20150125282
    Abstract: A multi-component braze filler alloy comprising 60-70% by weight CM247 superalloy and BRB braze alloy is diffusion brazed to a CM247 alloy base substrate, such as a gas turbine blade or vane. The substrate/braze interface may be subsequently weld-repaired without de-melting and migrating the braze alloy from the interface. The weld zone and surrounding area are solidification crack resistant. After the alloy composition is brazed to the base substrate the component may be returned to service. Thereafter the component remains repairable by welding or re-brazing, if needed to correct future in-service defects.
    Type: Application
    Filed: November 4, 2013
    Publication date: May 7, 2015
    Inventors: Petya M. Georgieva, James A. Yarbrough
  • 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: 9017605
    Abstract: A nickel-base superalloy is characterized by the following chemical composition (details in % by weight): 7.7-8.3 Cr, 5.0-5.25 Co, 2.0-2.1 Mo, 7.8-8.3 W, 5.8-6.1 Ta, 4.9-5.1 Al, 1.0-1.5 Ti, 1.0-2.0 Re, 0.11-0.15 Si, 0.1-0.7 Hf, 0-0.5 Nb, 0.02-0.17 C, 50-400 ppm B, remainder Ni and production-related impurities. The alloy is distinguished by a very high resistance to oxidation, resistance to corrosion and good creep properties at high temperatures.
    Type: Grant
    Filed: December 21, 2011
    Date of Patent: April 28, 2015
    Assignee: Alstom Technology Ltd.
    Inventors: Mohamed Youssef Nazmy, Andreas Kuenzler, Claus Paul Gerdes
  • Patent number: 9011764
    Abstract: A nickel-chromium-cobalt-molybdenum alloy includes (in weight %) Cr 21-23%, Fe 0.05-1.5%, C 0.05-0.08%, Mn?0.5%, Si?0.25%, Co 11-13%, Cu?0.15%, Mo 8.0-10.0%, Ti 0.3-0.5%, Al 0.8-1.3%, P<0.012%, S<0.008%, B>0.002-<0.006%, Nb>0-1%, N?0.015%, Mg?0.025%, Ca?0.01%, V 0.005-0.6%, optionally W in contents between 0.02-max. 2%, Ni rest as well as smelting-related impurities, in the form of tubes, sheets, wire, bars, strips or forgings, wherein the alloy satisfies the following formula: X3=5?50, wherein X ? ? 3 = 100 * X ? ? 1 X ? ? 2 and X1=C+5N and X2=0.5Ti+Nb+0.5 V.
    Type: Grant
    Filed: March 15, 2011
    Date of Patent: April 21, 2015
    Assignee: VDM Metals GmbH
    Inventors: Jutta Kloewer, Juergen Tewes, Ralf-Udo Husemann
  • Patent number: 8992699
    Abstract: A gamma prime nickel-base superalloy and components formed therefrom that exhibit improved high-temperature dwell capabilities, including creep and hold time fatigue crack growth behavior. A particular example of a component is a powder metallurgy turbine disk of a gas turbine engine. The gamma-prime nickel-base superalloy contains, by weight, 16.0 to 30.0% cobalt, 11.5 to 15.0% chromium, 4.0 to 6.0% tantalum, 2.0 to 4.0% aluminum, 1.5 to 6.0% titanium, up to 5.0% tungsten, 1.0 to 7.0% molybdenum, up to 3.5% niobium, up to 1.0% hafnium, 0.02 to 0.20% carbon, 0.01 to 0.05% boron, 0.02 to 0.10% zirconium, the balance essentially nickel and impurities, wherein the titanium:aluminum weight ratio is 0.5 to 2.0.
    Type: Grant
    Filed: May 29, 2009
    Date of Patent: March 31, 2015
    Assignee: General Electric Company
    Inventors: Kenneth Rees Bain, David Paul Mourer, Richard DiDomizio, Timothy Hanlon, Laurent Cretegny, Andrew Ezekiel Wessman
  • Patent number: 8992700
    Abstract: A gamma prime nickel-base superalloy and components formed therefrom that exhibit improved high-temperature dwell capabilities, including creep and hold time fatigue crack growth behavior. A particular example of a component is a powder metallurgy turbine disk of a gas turbine engine. The gamma-prime nickel-base superalloy contains, by weight, 18.0 to 30.0% cobalt, 11.4 to 16.0% chromium, up to 6.0% tantalum, 2.5 to 3.5% aluminum, 2.5 to 4.0% titanium, 5.5 to 7.5% molybdenum, up to 2.0% niobium, up to 2.0% hafnium, 0.04 to 0.20% carbon, 0.01 to 0.05% boron, 0.03 to 0.09% zirconium, the balance essentially nickel and impurities, wherein the titanium:aluminum weight ratio is 0.71 to 1.60.
    Type: Grant
    Filed: May 29, 2009
    Date of Patent: March 31, 2015
    Assignee: General Electric Company
    Inventors: Kenneth Rees Bain, David Paul Mourer, Richard DiDomizio, Timothy Hanlon, Laurent Cretegny, Andrew Ezekiel Wessman
  • Publication number: 20150050182
    Abstract: A nickel-chromium-aluminum-iron alloy includes (in wt.-%) 24 to 33% chromium, 1.8 to 4.0% aluminum, 0.10 to 7.0% iron, 0.001 to 0.50% silicon, 0.005 to 2.0% manganese, 0.00 to 0.60% titanium, 0.0002 to 0.05% each of magnesium and/or calcium, 0.005 to 0.12% carbon, 0.001 to 0.050% nitrogen, 0.0001 to 0.020% oxygen, 0.001 to 0.030% phosphorus, not more than 0.010% sulfur, not more than 2.0% molybdenum, not more than 2.0% tungsten, the remainder nickel and the usual process-related impurities, wherein the following relations must be satisfied: Cr+Al?28 (2a) and Fp?39.9 (3a) with Fp=Cr+0.272* Fe+2.36*Al+2.22 *Si+2.48*Ti+0.374*Mo+0.538*W?11.8*C (4a), wherein Cr, Fe, Al, Si, Ti, Mo, W and C is the concentration of the respective elements in % by mass.
    Type: Application
    Filed: May 15, 2013
    Publication date: February 19, 2015
    Applicant: VDM Metals GmbH
    Inventor: Heike Hattendorf
  • Publication number: 20150010427
    Abstract: In a Ni-base alloy, an area-equivalent diameter D is calculated. D is defined by D=A1/2 from an area A of a largest nitride in a field of view when an observation area S0 is observed. This process is repeated in n fields of view for measurement, where n is the number of the fields of view for measurement, so as to acquire n pieces of data on D, and the pieces are arranged in ascending order D1, D2, . . . , Dn to obtain a reduced variate yj. The obtained values are plotted on X-Y axis coordinates, where an X axis corresponds to D and a Y axis corresponds to yj. In a regression line yj=a×D+b, yj is obtained when a target cross-sectional area S is set to 100 mm2. When the obtained yj is substituted into the regression line, the estimated nitride maximum size is ?25 ?m in diameter.
    Type: Application
    Filed: February 6, 2013
    Publication date: January 8, 2015
    Applicants: HITACHI METALS MMC SUPERALLOY, LTD., MITSUBISHI MATERIALS CORPORATION
    Inventors: Masato Itoh, Kenichi Yaguchi, Tadashi Fukuda, Takanori Matsui
  • Patent number: 8916092
    Abstract: A Ni-based alloy including chromium, cobalt, aluminum, titanium, tantalum, tungsten, molybdenum, niobium, carbon, and boron, the balance being nickel and incidental impurities, is provided. The alloy has an alloy composition of, on the basis of mass percent, chromium: 13.10% to 16.00%, cobalt: 8.00% to 12.50%, aluminum: 2.30% to 3.50%, titanium: 4.80% to 5.50%, tantalum: 0.40% to less than 1.00%, tungsten: 4.50% to 6.00%, molybdenum: 0.10% to 1.50%, niobium: 0.60% to 1.70%, carbon: 0.01% to 0.20%, boron: 0.005% to 0.02%, and the balance: nickel and incidental impurities.
    Type: Grant
    Filed: June 6, 2012
    Date of Patent: December 23, 2014
    Assignee: Mitsubishi Hitachi Power Systems, Ltd.
    Inventors: Yuting Wang, Akira Yoshinari
  • Publication number: 20140363297
    Abstract: The Ni based forged alloy has a composition containing, on the basis of mass percent, Al: 0.5 to 1.0%, Cr: 17 to 21%, Fe: 17 to 19%, Nb: 4.5 to 5.5%, Ti: 0.8 to 1.3%, W: 3.0 to 6.0%, B: 0.001 to 0.03%, C: 0.001 to 0.015%, and Mo: 1.0% or less, the balance being Ni and inevitable impurities. The alloy includes carbide grains of the contained elements. The carbide grains have an average grain diameter of 20 ?m or less. Thus, a Ni based forged alloy is provided which is excellent in high-temperature fatigue property and has a moderate macrosegregation property.
    Type: Application
    Filed: June 10, 2014
    Publication date: December 11, 2014
    Inventors: Takashi SHIBAYAMA, Shinya IMANO, Hideki TAMAKI
  • Publication number: 20140356183
    Abstract: A nickel-base superalloy is disclosed. The superally includes aluminium, cobalt, chromium, molybdenum, tantalum, titanium and tungsten, in addition to nickel, as alloy constituents, wherein rhenium can additionally be contained and the rhenium content is less than or equal to 2 wt. % and wherein the titanium content is greater than or equal to 1.5 wt. %. Further disclosed is a component made of the nickel-base superalloy.
    Type: Application
    Filed: October 17, 2012
    Publication date: December 4, 2014
    Applicant: MTU Aero Engines AG
    Inventors: Robert F. Singer, Ernst Affeldt, Michael Weiss, Thomas Goehler, Ralf Rettig
  • Publication number: 20140348689
    Abstract: A nickel-base alloy having the following composition (in weight percent unless otherwise stated): Cr 10.5-15.0; Co 1.7-8.8; Fe 0-5.9; Si 0-0.65; Mn 0-0.65; Mo 0.3-2.3; W 2.3-4.4; Al 2.7-4.1; Nb 1.0-4.2; Ti 1.0-3.0; Ta 2.0-5.0; Hf 0.0-0.6; C 0.02-0.06; B 0.015-0.035; Zr 0.035-0.11; S<20 ppm; P<60 ppm; the balance being Ni and incidental impurities. The alloy has an improved combination of properties (principally resistance to surface environmental damage and dwell fatigue crack growth) compared with known alloys, and is intended to operate for prolonged periods of time above 700° C., and up to peak temperatures of 800° C.
    Type: Application
    Filed: March 4, 2014
    Publication date: November 27, 2014
    Applicant: ROLLS-ROYCE PLC
    Inventors: Mark Christopher HARDY, Howard James STONE, Paul Michael MIGNANELLI, Bryce David CONDUIT, Gareth John CONDUIT
  • Patent number: 8876989
    Abstract: Low rhenium nickel base superalloy compositions and articles formed from the superalloy composition are provided. The nickel base superalloy composition includes in percentages by weight: about 5-8 Cr; about 6.5-9 Co; about 1.3-2.5 Mo; about 4.8-6.8 W; about 6.0-7.0 Ta; if present, up to about 0.5 Ti; about 6.0-6.4 Al; about 1-2.3 Re; if present, up to about 0.6 Hf; if present, up to 1.5 C; if present, up to about 0.015 B; the balance being nickel and incidental impurities. Exemplary compositions are characterized by an Re ratio defined as the weight % of Re relative to the total of the weight % of W and the wt % of Mo, of less than about 0.3. Exemplary articles include airfoils for gas turbine engine blades or vanes, nozzles, shrouds, and splash plates.
    Type: Grant
    Filed: December 26, 2007
    Date of Patent: November 4, 2014
    Assignee: General Electric Company
    Inventors: Kevin Swayne O'Hara, Laura Jill Carroll
  • Publication number: 20140314618
    Abstract: A cast nickel-base superalloy that includes iron added substitutionally for nickel. The cast nickel base superalloy comprises, in weight percent about 1-6% iron, about 7.5-19.1% cobalt, about 7-22.5% chromium, about 1.2-6.2% aluminum, optionally up to about 5% titanium, optionally up to about 6.5% tantalum, optionally up to about 1% Nb, about 2-6% W, optionally up to about 3% Re, optionally up to about 4% Mo, about 0.05-0.18% C, optionally up to about 0.15% Hf, about 0.004-0.015 B, optionally up to about 0.1% Zr, and the balance Ni and incidental impurities. The superalloy is characterized by a ?? solvus temperature that is within 5% of the ?? solvus temperature of the superalloy that does not include 1-6% Fe and a mole fraction of ?? that is within 15% of the mole fraction of the superalloy that does not include 1-6% Fe.
    Type: Application
    Filed: April 23, 2013
    Publication date: October 23, 2014
    Inventors: Ganjiang FENG, Jon Conrad SCHAEFFER, Michael Douglas ARNETT
  • Patent number: 8864919
    Abstract: It is an objective of the invention to provide a Ni-based forged alloy having good large ingot formability and good hot formability as well as high mechanical strength at high temperature. There is provided a Ni-based forged alloy comprising: 0.001 to 0.1 mass % of C; 0.001 to 0.01 mass % of B; 16 to 22 mass % of Cr; 0.5 to 1.5 mass % of Al; 0.1 to 6.0 mass % of W; 3.5 to 5.5 mass % of Nb; 0.8 to 3.0 mass % of Ti; 16 to 20 mass % of Fe; 2.0 mass % or less of Mo; and the balance including Ni and unavoidable impurities, in which: a segregation parameter Ps defined by a formula of “Ps (mass %) =1.05×[Al concentration (mass %)]+0.6×[Ti concentration (mass %)]?0.8×[Nb concentration (mass %)]?0.3×[Mo concentration (mass %)]” satisfies a relationship of “Ps??3.0 mass %”; and a total amount of W and Mo is 1.75 atomic % or less.
    Type: Grant
    Filed: December 20, 2012
    Date of Patent: October 21, 2014
    Assignee: Hitachi, Ltd.
    Inventors: Jun Sato, Shinya Imano, Hiroyuki Doi, Takashi Shibayama
  • Publication number: 20140305921
    Abstract: Provided is a high Cr Ni-based alloy welding wire with which tensile strength and weld cracking resistance of a welded portion, the integrity of the microstructure of a welded metal, and inhibition of scale generation are improved. The high Cr Ni-based alloy welding wire is configured to have an alloy composition comprising, by mass, C: 0.04% or less, Mn: 7% or less, Fe: 1 to 12%, Si: 0.75% or less, Al: 0.01 to 0.7%, Ti: 0.01 to 0.7%, Cr: 25.0 to 31.5%, Ta: 1 to 10%, and Mo: 1 to 6%, and as inevitable impurities, Ca+Mg: less than 0.002%, N: 0.1% or less, P: 0.02% or less, O: 0.01% or less, S: 0.0015% or less, H: 0.0015% or less, Cu: 0.08% or less, and Co: 0.05% or less, and the balance: Ni. Then, the high CrNi-based alloy welding wire is configured such that the contents of S, Ta, Al, and Ti satisfy the following relation (1) and the contents of Ta, Mo, and N satisfy the following relation (2): 12000S+0.58Ta?2.6Al?2Ti£19.3??(1) Ta+1.6Mo+187N35.7??(2).
    Type: Application
    Filed: January 27, 2012
    Publication date: October 16, 2014
    Applicants: NIPPON WELDING ROD CO., LTD., MITSUBISHI HEAVY INDUSTRIES, LTD.
    Inventors: Kenji Kawasaki, Seiichi Kawaguchi, Masahiko Toyoda, Seiji Asada, Akira Konishi, Yusuke Sano, Tamao Takatsu, Teiichiro Saito, Tetsuya Sango, Norihito Ogawa
  • Patent number: 8852500
    Abstract: A Ni-base superalloy having a chemical composition comprising Cr: 3.0-5.0 wt %, Co: 5.0-10.0 wt %, Mo: 0.5-3.0 wt %, W: 8.0-10.0 wt %, Ta: 5.0-8.0 wt %, Nb: 3.0 wt % or less, Al: 4.5-6.0 wt %, Ti: 0.1-2.0 wt %, Re: more than 3.0-4.0 wt %, Ru: 0.2-4.0 wt %, Hf: 0.01-0.2 wt %, and the balance being Ni and unavoidable impurities, a method for producing the same, and turbine blade or turbine vane components are disclosed. The Ni-base superalloy has high creep strength and textural stability under high temperature environment, and is excellent in applicability to turbine blade or turbine vane components of large-sized gas turbines.
    Type: Grant
    Filed: March 16, 2007
    Date of Patent: October 7, 2014
    Assignee: National Institute for Materials Science
    Inventors: Yutaka Koizumi, Hiroshi Harada, Tadaharu Yokokawa, Toshiharu Kobayashi
  • Publication number: 20140271338
    Abstract: An essentially cobalt-free alloy consists essentially of, in terms of weight percent: 6.3 to 7.2 Cr, 0.5 to 2 Al, 0 to 5 Fe, 0.7 to 0.8 Mn, 9 to 12.5 Mo, 0 to 6 Ta, 0.75 to 3.5 Ti, 0.01 to 0.25 Nb, 0.2 to 0.6 W, 0.02 to 0.04 C, 0 to 0.001 B, 0.0001 to 0.002 N, balance Ni. The alloy is characterized by a ?? microstructural component in the range of 3 to 17.6 weight percent of the total composition. The alloy is further characterized by, at 850° C., a yield strength of at least 60 Ksi, a tensile strength of at least 70 Ksi, a creep rupture life at 12 Ksi of at least 700 hours, and a corrosion rate, expressed in weight loss [g/(cm2sec)]10?11 during a 1000 hour immersion in liquid FLiNaK at 850° C., in the range of 5.5 to 17.
    Type: Application
    Filed: March 15, 2013
    Publication date: September 18, 2014
    Inventors: David E. Holcomb, Govindarajan Muralidharan, Dane F. Wilson
  • Publication number: 20140271337
    Abstract: A system and method of processing an alloy ingot or other alloy workpiece to reduce thermal cracking and reduce friction between the workpiece and the forging die may generally comprise positioning a multi-layer pad between the workpiece and the forging die. An article for processing an alloy ingot or other alloy workpiece to reduce thermal cracking also is disclosed. The present disclosure also is directed to an alloy workpieces processed according to the methods described herein, and to articles of manufacture including or made from alloy workpieces made according to these methods.
    Type: Application
    Filed: March 15, 2013
    Publication date: September 18, 2014
    Applicant: ATI PROPERTIES, INC.
    Inventors: Anthony Banik, Ramesh S. Minisandram, Christopher M. O'Brien
  • Patent number: 8828313
    Abstract: An Ni-base alloy for a turbine rotor of a steam turbine contains in percent by weight C: 0.01 to 0.15, Cr: 15 to 28, Co: 10 to 15, Mo: 8 to 12, Al: 1.5 to 2, Ti: 0.1 to 0.6, B: 0.001 to 0.006, Re: 0.5 to 3, and the balance of Ni and unavoidable impurities.
    Type: Grant
    Filed: March 13, 2009
    Date of Patent: September 9, 2014
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Kuniyoshi Nemoto, Kiyoshi Imai, Yomei Yoshioka, Masayuki Yamada, Reki Takaku, Shigekazu Miyashita, Takeo Suga, Takeo Takahashi, Kenichi Okuno, Akihiro Takakuwa
  • Publication number: 20140241936
    Abstract: The invention relates to a nickel alloy derived from René 125, but with reduced levels of certain elements (Zr, B, P, S, Si and, to a lesser extent, Ti and Hf) in order to limit the appearance of cracks upon solidification in a moulding process. Specifically, 4.80%?Al?5.00%, 1.48%?Hf?1.52%, 2.28%?Ti?2.33%, 0.005%?B?0.01%, 1.77%?Mo?1.97%, and Zr?0.007%. Other elements can have levels that match those of René 125.
    Type: Application
    Filed: September 27, 2012
    Publication date: August 28, 2014
    Applicant: SNECMA
    Inventors: Karine Deschandol, Nicole Foucard, Michel Raguet, Francois Tievant
  • Patent number: 8808473
    Abstract: An austenitic heat resistant alloy includes, by mass percent, C: 0.15% or less, Si: 2% or less, Mn: 3% or less, Ni: 40 to 60%, Co: 10.14 to 25%, Cr: 15% or more and less than 28%, either one or both of Mo: 12% or less and W: less than 0.05%, the total content thereof being 0.1 to 12%, Nd: 0.001 to 0.1%, B: 0.0005 to 0.006%, N: 0.03% or less, O: 0.03% or less, at least one selected from Al: 1.36% or less, Ti: 3% or less, and Nb: 3% or less, and the balance being Fe and impurities. The contents of P and S in the impurities are P: 0.03% or less and S: 0.01% or less. The alloy satisfies 1?4×Al+2×Ti+Nb?12 and P+0.2×Cr×B?0.035, where an element in the Formulas represents the content by mass percent.
    Type: Grant
    Filed: May 16, 2012
    Date of Patent: August 19, 2014
    Assignee: Nippon Steel & Sumitomo Metal Corporation
    Inventors: Hiroyuki Hirata, Hirokazu Okada, Hiroyuki Semba, Kazuhiro Ogawa, Atsuro Iseda, Mitsuru Yoshizawa
  • Patent number: 8808872
    Abstract: A germanium containing nickel-based solder having a similar composition to a nickel-based superalloy is provided. As a result of which the proportion of ?? formed in the solder is reduced. The solder also includes chromium, cobalt, molybdenum, tungsten, aluminum, and titanium. A component including the solder is also provided.
    Type: Grant
    Filed: April 6, 2011
    Date of Patent: August 19, 2014
    Assignee: Siemens Aktiengesellschaft
    Inventors: Michael Ott, Sebastian Piegert, Peter Randelzhofer, Robert Singer
  • Publication number: 20140220379
    Abstract: Known protective layers having a high Cr content and additionally a silicon form brittle phases which additionally become brittle under the influence of carbon during use. The protective layer hereof has a composition 22% to 24% cobalt (Co), 10.5% to 11.5% aluminum (AI), 0.2% to 0.4% yttrium (Y) and/or at least one equivalent metal from the group comprising scandium and the rare earth elements, 14% to 16% chrome (Cr), optionally 0.3% to 0.9% tantalum, the remainder nickel (Ni).
    Type: Application
    Filed: June 22, 2012
    Publication date: August 7, 2014
    Applicant: SIEMENS AKTIENGESELLSCHAFT
    Inventor: Werner Stamm
  • Publication number: 20140220384
    Abstract: Known protective layers having a high Cr-content and a silicone in addition, form brittle phases that embrittle further under the influence of carbon during use. The protective layer according to the invention is composed of 22% to 26% cobalt (Co), 10.5% to 12% aluminum (Al), 0.2% to 0.4% Yttrium (Y) and/or at least one equivalent metal from the group comprising Scandium and the rare earth elements, 15% to 16% chrome (Cr), optionally 0.3% to 1.5% tantal, the remainder nickel (Ni).
    Type: Application
    Filed: August 3, 2012
    Publication date: August 7, 2014
    Applicant: SIEMENS AKTIENGESELLSCHAFT
    Inventor: Werner Stamm
  • Publication number: 20140205449
    Abstract: A gamma prime nickel-base superalloy and components formed therefrom that exhibit improved high-temperature dwell capabilities, including creep and hold time fatigue crack growth behavior. A particular example of a component is a powder metallurgy turbine disk of a gas turbine engine. The gamma-prime nickel-base superalloy contains, by weight: 16.0 to 30.0% cobalt; 9.5 to 12.5% chromium; 4.0 to 6.0% tantalum; 2.0 to 4.0% aluminum; 2.0 to 3.4% titanium; 3.0 to 6.0% tungsten; 1.0 to 4.0% molybdenum; 1.5 to 3.5% niobium; up to 1.0% hafnium; 0.02 to 0.20% carbon; 0.01 to 0.05% boron; 0.02 to 0.10% zirconium; the balance essentially nickel and impurities. The superalloy has a W+Nb?Cr value of at least ?6, is free of observable amounts of sigma and eta phases, and exhibits a time to 0.2% creep at 1300° F. and 100 ksi of at least 1000 hours.
    Type: Application
    Filed: July 23, 2013
    Publication date: July 24, 2014
    Applicant: General Electric Company
    Inventors: David Paul Mourer, Richard DiDomizio, Timothy Hanlon, Daniel Yeuching Wei, Andrew Ezekiel Wessman, Kenneth Rees Bain, Andrew Martin Powell
  • Publication number: 20140205490
    Abstract: A nickel-based alloy and a turbine component including a nickel-based alloy are disclosed. The nickel-based alloy includes, by weight, between about 8% and about 11% cobalt, up to about 3% niobium, up to about 3% titanium, up to about 2.3% aluminum, up to about 3% tungsten, up to about 25% chromium, up to about 0.1% carbon, up to about 0.01% boron, and a balance nickel, or the nickel-based alloy includes, by weight, between about 1% and about 3% niobium, between about 1% and about 3% titanium, between about 2.1% and about 2.5% aluminum, up to about 3% tungsten, up to about 11% cobalt, up to about 25% chromium, up to about 0.1% carbon, up to about 0.01% boron, and a balance nickel. The turbine component includes the nickel-based alloy.
    Type: Application
    Filed: July 31, 2012
    Publication date: July 24, 2014
    Applicant: GENERAL ELECTRIC COMPANY
    Inventors: Ganjiang FENG, Michael Douglas ARNETT, Yan CUI, Shan LIU, Matthew J. LAYLOCK
  • Publication number: 20140199164
    Abstract: A nickel-based alloy and a turbine component are disclosed. The alloy includes, by weight, between about 0.8% and about 1.3% hafnium, between about 5.7% and about 6.4% aluminum, between about 7.0% and about 10.0% cobalt, up to about 0.1% carbon, up to about 8.7% chromium, up to about 0.6% molybdenum, up to about 9.7% tungsten, up to about 0.9% titanium, up to about 0.02% boron, up to about 0.1% manganese, up to about 0.06% silicon, up to about 0.01% phosphorus, up to about 0.004% sulfur, up to about 0.02% zirconium, up to about 1.8% niobium, up to about 0.1% vanadium, up to about 0.1% copper, up to about 0.2% iron, up to about 0.003% magnesium, up to about 0.002% oxygen, up to about 0.002% nitrogen, and a balance nickel. The turbine component is a turbine bucket, a turbine nozzle, or any other suitable turbine component including the alloy.
    Type: Application
    Filed: January 11, 2013
    Publication date: July 17, 2014
    Applicant: GENERAL ELECTRIC COMPANY
    Inventors: Ganjiang FENG, Michael Douglas ARNETT, Matthew J. LAYLOCK, Shan LIU, Jingxian ZHANG
  • Publication number: 20140191017
    Abstract: The invention relates to a novel alloy which comprises the elements carbon (C), chromium (Cr), cobalt (Co), molybdenum (Mo), tungsten (W), titanium (Ti), aluminium (Al), boron (B), and zirconium (Zr), based on nickel, and which has a very low tendency to form cracks during welding.
    Type: Application
    Filed: June 13, 2012
    Publication date: July 10, 2014
    Applicant: SIEMENS AKTIENGESELLSCHAFT
    Inventors: Nikolai Arjakine, Torsten Jokisch, Andreas Neidel, Michael Ott, Sebastian Piegert, Dimitrios Thomaidis
  • Publication number: 20140193291
    Abstract: A foundry method of casting monocrystalline metal parts, the method including at least casting a molten alloy into a cavity of a mold through at least one casting channel in the mold, subjecting the alloy to heat treatment, and removing the mold, and wherein the heat treatment is performed before an end of mold removal.
    Type: Application
    Filed: August 6, 2012
    Publication date: July 10, 2014
    Applicant: SNECMA
    Inventors: Celine Yanxi Chan, Benoit Georges Jocelyn Marie, David Locatelli