Zirconium Or Boron Containing Patents (Class 420/449)
  • 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: 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
  • Patent number: 8845958
    Abstract: Provided is an Ni-base alloy excellent in strength, ductility and other properties through the resolution of micro-segregation. Also provided is a process for manufacturing an Ni-base alloy containing by mass C:0.15% or less, Si:1% or less, Mn:1% or less, Cr:10 to 24%, Mo+(1/2)W (where Mo may be contained either alone or as an essential component):5 to 17%, Al:0.5 to 1.8%, Ti:1 to 2.5%, Mg:0.02% or less, and either B:0.02% or less and/or Zr:0.2% or less at an Al/(Al+0.56Ti) ratio of 0.45 to 0.70 with the balance consisting of Ni and impurities, which comprises subjecting, at least one time, an Ni-base alloy material which is prepared by vacuum melting and has the above composition to homogenization heat treatment at 1160 to 1220° C. for 1 to 100 hours. The Mo segregation ratio of the alloy is controlled to 1 to 1.17 by the homogenization heat treatment.
    Type: Grant
    Filed: September 25, 2009
    Date of Patent: September 30, 2014
    Assignee: Hitachi Metals, Ltd.
    Inventors: Chuya Aoki, Toshihiro Uehara, Takehiro Ohno
  • 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
  • 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: 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: 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
  • Patent number: 8734716
    Abstract: Disclosed is a novel heat-resistant superalloy for turbine disks having a chemical composition consisting of, in mass %, 19.5-55% of cobalt, 2-25% of chromium, 0.2-7% of aluminum, 3-15% of titanium and the balance of nickel and inevitable impurities.
    Type: Grant
    Filed: March 11, 2011
    Date of Patent: May 27, 2014
    Assignee: National Institute for Materials Science
    Inventors: Hiroshi Harada, Yuefeng Gu, Chuanyong Cui, Makoto Osawa, Akihiro Sato, Toshiharu Kobayashi
  • Publication number: 20130224068
    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: Application
    Filed: March 23, 2010
    Publication date: August 29, 2013
    Applicant: SIEMENS AKTIENGESELLSCHAFT
    Inventors: Anand A. Kulkarni, Jonathon E. Shipper, JR., Werner Stamm
  • Patent number: 8512874
    Abstract: A coating and process for depositing the coating on a substrate. The coating is a nickel aluminide overlay coating of predominantly the beta (NiAl) and gamma-prime (Ni3Al) intermetallic phases, and is suitable for use as an environmental coating and as a bond coat for a thermal barrier coating (TBC). The coating can be formed by depositing nickel and aluminum in appropriate amounts to yield the desired beta+gamma prime phase content. Alternatively, nickel and aluminum can be deposited so that the aluminum content of the coating exceeds the appropriate amount to yield the desired beta+gamma prime phase content, after which the coating is heat treated to diffuse the excess aluminum from the coating into the substrate to yield the desired beta+gamma prime phase content.
    Type: Grant
    Filed: June 4, 2007
    Date of Patent: August 20, 2013
    Assignee: General Electric Company
    Inventors: Ramgopal Darolia, Joseph David Rigney, Gillion Herman Marijnissen, Eric Richard Irma Carolus Vergeldt, Annejan Bernard Kloosterman
  • 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
  • Patent number: 8444778
    Abstract: Disclosed is a low-thermal-expansion Ni-based super-heat-resistant alloy for a boiler, which has excellent high-temperature strength. The alloy can be welded without the need of carrying out any aging treatment. The alloy has a Vickers hardness value of 240 or less. The alloy comprises (by mass) C in an amount of 0.2% or less, Si in an amount of 0.5% or less, Mn in an amount of 0.5% or less, Cr in an amount of 10 to 24%, one or both of Mo and W in such an amount satisfying the following formula: Mo+0.5 W=5 to 17%, Al in an amount of 0.5 to 2.0%, Ti in an amount of 1.0 to 3.0%, Fe in an amount of 10% or less, and one or both of B and Zr in an amount of 0.02% or less (excluding 0%) for B and in an amount of 0.2% or less (excluding 0%) for Zr, with the remainder being 48 to 78% of Ni and unavoidable impurities.
    Type: Grant
    Filed: August 29, 2008
    Date of Patent: May 21, 2013
    Assignees: Hitachi Metals, Ltd., Babcock-Hitachi Kabushiki Kaisha, Hitachi, Ltd.
    Inventors: Toshihiro Uehara, Takehiro Ohno, Akihiro Toji, Takashi Sato, Gang Bao, Shinya Imano, Hiroyuki Doi
  • 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: 20120315133
    Abstract: An Ni-based alloy for casting used for a steam turbine of an embodiment contains in percent (%) by mass C (carbon): 0.01 to 0.1, Cr (chromium): 15 to 25, Co (cobalt): 10 to 15, Mo (molybdenum): 5 to 12, Al (aluminum): 0.5 to 2, Ti (titanium): 0.3 to 2, B (boron): 0.001 to 0.006, Ta (tantalum): 0.05 to 1, Si (silicon): 0.1 to 0.5, Mn (manganese): 0.1 to 0.5, and the balance of Ni (nickel) and unavoidable impurities.
    Type: Application
    Filed: June 4, 2012
    Publication date: December 13, 2012
    Applicant: Kabushiki Kaisha Toshiba
    Inventors: Kuniyoshi NEMOTO, Yomei YOSHIOKA, Kiyoshi IMAI, Shigekazu MIYASHITA, Takeo SUGA
  • Publication number: 20120308428
    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: Application
    Filed: June 1, 2011
    Publication date: December 6, 2012
    Applicant: ATI Properties, Inc.
    Inventors: Robin M. Forbes Jones, Christopher D. Rock
  • Publication number: 20120282086
    Abstract: The invention is a class of nickel-base alloys for gas turbine applications, comprising, by weight, about 13.7 to about 14.3 percent chromium, about 5.0 to about 10.0 percent cobalt, about 3.5 to about 5.2 percent tungsten, about 2.8 to about 5.2 percent titanium, about 2.8 to about 4.6 percent aluminum, about 0.0 to about 3.5 percent tantalum, about 1.0 to about 1.7 percent molybdenum, about 0.08 to about 0.13 percent carbon, about 0.005 to about 0.02 percent boron, about 0.0 to about 1.5 percent niobium, about 0.0 to about 2.5 percent hafnium, about 0.0 to about 0.04 percent zirconium, and the balance substantially nickel. The nickel-base alloys may be provided in the form of useful articles of manufacture, and which possess a unique combination of mechanical properties, microstructural stability, resistance to localized pitting and hot corrosion in high temperature corrosive environments, and high yields during the initial forming process as well as post-forming manufacturing and repair processes.
    Type: Application
    Filed: May 4, 2011
    Publication date: November 8, 2012
    Inventors: Ganjiang Feng, Jon Conrad Schaeffer, Stephen Joseph Balsone, Hariharan Sundaram, Sundar Amancherla, Gitahi Charles Mukira
  • Patent number: 8211360
    Abstract: A Ni-based heat resistant alloy for a gas turbine combustor, comprising a composition containing, in mass %, Cr: 14.0 to 21.5%, Co: 6.5 to 14.5%, Mo: 6.5 to 10.0%, W: 1.5 to 3.5%, Al: 1.2 to 2.4%, Ti: 1.1 to 2.1%; Fe: 7.0% or less, B: 0.001 to 0.020%, C: 0.03 to 0.15%, and a balance consisting of Ni and unavoidable impurities, wherein a content of S and P contained in the unavoidable impurities is controlled to be, in mass %, S: 0.015% or less, and P: 0.015% or less, wherein the alloy has a texture in which M6C type carbide and MC type carbide are uniformly dispersed in ? phase matrix.
    Type: Grant
    Filed: April 13, 2007
    Date of Patent: July 3, 2012
    Assignees: Mitsubishi Materials Corporation, Mitsubishi Heavy Industries, Ltd
    Inventors: Takanori Matsui, Komei Kato, Takuya Murai, Yoshitaka Uemura, Daisuke Yoshida, Ikuo Okada
  • Patent number: 8187531
    Abstract: A wire for welding Ni-based heat resistant alloy, comprising: a composition containing, in mass %, Cr: 14.0 to 21.5%, Co: 6.5 to 14.5%, Mo: 6.5 to 10.0%, W: 1.5 to 3.5%, Al: 1.2 to 2.4%, Ti: 1.1 to 2.1%; Fe: 7.0% or less, B: 0.0001 to 0.020%, C: 0.03 to 0.15%, and a balance of Ni and unavoidable impurities, wherein a content of S and P contained in the unavoidable impurities is controlled to be, in mass %, S: 0.004% or less, and P: 0.010% or less, wherein the wire has a texture in which M6C type carbide and MC type carbide are uniformly dispersed in the matrix.
    Type: Grant
    Filed: April 16, 2007
    Date of Patent: May 29, 2012
    Assignees: Mitsubishi Materials Corporation, Mitsubishi Heavy Industries, Ltd.
    Inventors: Takanori Matsui, Komei Kato, Takuya Murai, Yoshitaka Uemura, Daisuke Yoshida, Ikuo Okada
  • Patent number: 8187725
    Abstract: A nickel, chromium, iron alloy and method for use in producing weld deposits and weldments formed therefrom. The alloy comprises, in weight percent, about 28.5 to 31.0% chromium; about 0 to 16% iron; less than about 1.0% manganese; about 2.1 to 4.0% niobium plus tantalum; 1.0 to 6.5% molybdenum; less than 0.50% silicon; 0.01 to 0.35% titanium; 0 to 0.25% aluminum; less than 1.0% copper; less than 1.0% tungsten; less than 0.5% cobalt; less than about 0.10% zirconium; less than about 0.01% sulfur; less than 0.01% boron; less than 0.03% carbon; less than about 0.02% phosphorous; 0.002 to 0.015% magnesium plus calcium; and balance nickel and incidental impurities. The method includes the steps of forming a welding electrode from the above alloy composition and melting the electrode to form a weld deposit. A preferred weldment may be in the form of a tubesheet of a nuclear reactor.
    Type: Grant
    Filed: July 19, 2007
    Date of Patent: May 29, 2012
    Assignees: Huntington Alloys Corporation, Areva NP Inc.
    Inventors: Samuel D. Kiser, Brian A. Baker, David E. Waskey
  • Patent number: 8083874
    Abstract: A method for producing a low thermal expansion Ni-base superalloy including the steps of subjecting the alloy to a solution heat treatment under the condition of at a temperature of 1000 to 1200° C. and subjecting the alloy to either a carbide stabilizing treatment for making aggregated carbides on grain boundaries and stabilizing the carbides under the conditions of at a temperature of not less than 850° C. and less than 1000° C. and for 1 to 50 hours, or a carbide stabilizing treatment for making aggregated carbides on grain boundaries and stabilizing the carbides by cooling from the temperature in the solution heat treatment to 850° C. at a cooling rate of 100° C. or less per hour. The method also including the steps of subjecting the alloy to a first aging treatment for precipitating y? phase under the conditions of at a temperature of 720 to 900° C.
    Type: Grant
    Filed: April 27, 2005
    Date of Patent: December 27, 2011
    Assignee: Mitsubishi Heavy Industries, Ltd.
    Inventors: Shigeki Ueta, Toshiharu Noda, Ryuichi Yamamoto, Yoshikuni Kadoya, Ryotaro Magoshi, Shin Nishimoto
  • Publication number: 20110274579
    Abstract: A welding additive is provided. A component including a welding additive is also provided. The welding additive improves the weldability of a few nickel-based superalloys and includes the following contents (in wt %): 10.0%-20.0% chromium, 5.0%-15.0% cobalt, 0.0%-10.0% molybdenum, 0.5-3.5% tantalum, 0.0%-5.0% titanium, 1.5%-5.0% aluminum, 0.3%-0.6% boron, remainder nickel.
    Type: Application
    Filed: September 10, 2009
    Publication date: November 10, 2011
    Inventor: Nikolai Arjakine
  • Publication number: 20110194971
    Abstract: Disclosed is a novel heat-resistant superalloy for turbine disks having a chemical composition consisting of, in mass %, 19.5-55% of cobalt, 2-25% of chromium, 0.2-7% of aluminum, 3-15% of titanium and the balance of nickel and inevitable impurities.
    Type: Application
    Filed: March 11, 2011
    Publication date: August 11, 2011
    Inventors: Hiroshi Harada, Yuefeng Gu, Chuanyong Cui, Makoto Osawa, Akihiro Sato, Toshiharu Kobayashi
  • Publication number: 20110171058
    Abstract: Provided is an Ni-base alloy excellent in strength, ductility and other properties through the resolution of micro-segregation. Also provided is a process for manufacturing an Ni-base alloy containing by mass C: 0.15% or less, Si: 1% or less, Mn: 1% or less, Cr: 10 to 24%, Mo+(½)W (where Mo may be contained either alone or as an essential component): 5 to 17%, Al: 0.5 to 1.8%, Ti: 1 to 2.5%, Mg: 0.02% or less, and either B: 0.02% or less and/or Zr: 0.2% or less at an Al/(Al+0.56Ti) ratio of 0.45 to 0.70 with the balance consisting of Ni and impurities, which comprises subjecting, at least one time, an Ni-base alloy material which is prepared by vacuum melting and has the above composition to homogenization heat treatment at 1160 to 1220° C. for 1 to 100 hours. The Mo segregation ratio of the alloy is controlled to 1 to 1.17 by the homogenization heat treatment.
    Type: Application
    Filed: September 25, 2009
    Publication date: July 14, 2011
    Applicant: HITACHI METALS, LTD.
    Inventors: Chuya Aoki, Toshihiro Uehara, Takehiro Ohno
  • Publication number: 20110142713
    Abstract: Disclosed is a welding material for a Ni-based alloy, comprising components expressed as follows: C?0.05 mass %; 8 mass %?Cr?25 mass %; Fe?4.0 mass %; W?15 mass %; 5 mass %?Mo+½(W+Re)?20 mass %; Co?20 mass %; 0.01 mass %?Al<2.0 mass %; 0.01 mass %?Ti<2.0 mass %; Al+½Ti?3.0 mass %; Nb+½Ta?1.5 mass %; B?0.007 mass %; Zr?0.04 mass %; 0.01 mass %?Si?0.5 mass %; Mn?1.0 mass %; P?0.010 mass %; S?0.002 mass %; O?0.005 mass %; and Ni and unavoidable impurities which constitute the balance.
    Type: Application
    Filed: June 29, 2009
    Publication date: June 16, 2011
    Inventors: Kenji Kawasaki, Ryuichi Yamamoto, Yoshikuni Kadoya, Shin Nishimoto, Seiichi Kawaguchi
  • 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: 20100329876
    Abstract: Gamma prime nickel-base superalloy and components formed therefrom. The alloy contains, by weight, 11.3 to 13.3% cobalt, 12.4 to 15.2% chromium, 2.1 to 2.7% aluminum, 3.6 to 5.8% titanium, 3.5 to 4.5% tungsten, 3.1 to 3.8% molybdenum, 0.0 to 1.2% niobium, 0.0 to 2.3% tantalum, 0.0 to 0.5% hafnium, 0.040 to 0.100% carbon, 0.010 to 0.046% boron, 0.030 to 0.080% zirconium, the balance nickel and impurities, wherein the Nb+Ta content is 0.0-3.5%.
    Type: Application
    Filed: June 30, 2009
    Publication date: December 30, 2010
    Applicant: GENERAL ELECTRIC COMPANY
    Inventors: Kenneth Rees Bain, David Paul Mourer
  • Publication number: 20100303666
    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: Application
    Filed: May 29, 2009
    Publication date: December 2, 2010
    Applicant: General Electric Company
    Inventors: Kenneth Rees Bain, David Paul Mourer, Richard DiDomizio, Timothy Hanlon, Laurent Cretegny, Andrew Ezekiel Wessman
  • Publication number: 20100247324
    Abstract: The invention provides a Ni—Fe-based alloy which is preferable for a welding of a joint between different materials such as a steel material and a Ni-based alloy, and a rotor for a steam turbine which is manufactured by using the same. The invention employs a Ni—Fe-based alloy comprising Cr: 14 to 18%, Al: 1.0 to 2.5%, Mo+W: 2.5 to 5.0%, C: 0.01 to 0.10%, B: 0.001 to 0.03%, and Fe: 15 to 20%, in mass, in which the remaining portion is constructed by an unavoidable impurity and Ni, as a welding metal. As a result, it is possible to provide a rotor for a steam turbine which can hold down a reduction of a ductility and a toughness generated in the case of welding the different materials, and is excellent in a strength and the ductility.
    Type: Application
    Filed: February 4, 2010
    Publication date: September 30, 2010
    Applicant: HITACHI, LTD.
    Inventors: Jun SATO, Shinya IMANO, Hiroyuki DOI
  • Publication number: 20100226814
    Abstract: Disclosed is a low-thermal-expansion Ni-based super-heat-resistant alloy for a boiler, which has excellent high-temperature strength. The alloy can be welded without the need of carrying out any aging treatment. The alloy has a Vickers hardness value of 240 or less. The alloy comprises (by mass) C in an amount of 0.2% or less, Si in an amount of 0.5% or less, Mn in an amount of 0.5% or less, Cr in an amount of 10 to 24%, one or both of Mo and W in such an amount satisfying the following formula: Mo+0.5 W=5 to 17%, Al in an amount of 0.5 to 2.0%, Ti in an amount of 1.0 to 3.0%, Fe in an amount of 10% or less, and one or both of B and Zr in an amount of 0.02% or less (excluding 0%) for B and in an amount of 0.2% or less (excluding 0%) for Zr, with the remainder being 48 to 78% of Ni and unavoidable impurities.
    Type: Application
    Filed: August 29, 2008
    Publication date: September 9, 2010
    Applicants: HITACHI METALS, LTD., BABCOCK-HITACHI KABUSHIKI KAISHA, HITACHI, LTD.
    Inventors: Toshihiro Uehara, Takehiro Ohno, Akihiro Toji, Takashi Sato, Gang Bao, Shinya Imano, Hiroyuki Doi
  • Publication number: 20100166594
    Abstract: An austenitic heat resistant alloy, which comprises, by mass percent, C?0.15%, Si?2%, Mn?3%, Ni: 40 to 80%, Cr: 15 to 40%, W and Mo: 1 to 15% in total content, Ti?3%, Al?3%, N?0.03%, O?0.03%, with the balance being Fe and impurities, and among the impurities P?0.04%, S?0.03%, Sn?0.1%, As?0.01%, Zn?0.01%, Pb?0.01% and Sb?0.01%, and satisfies the conditions [P1=S+{(P+Sn)/2}+{(As+Zn+Pb+Sb)/5}?0.050], [0.2?P2=Ti+2Al?7.5?10×P1], [P2?9.0?100×O] and [N?0.002×P2+0.019] can prevent both the liquation crack in the HAZ and the brittle crack in the HAZ and also can prevent defects due to welding fabricability, which occur during welding fabrication, and moreover has excellent creep strength at high temperatures. Therefore, the alloy can be used suitably as a material for constructing high temperature machines and equipment, such as power generating boilers, plants for the chemical industry and so on.
    Type: Application
    Filed: December 24, 2009
    Publication date: July 1, 2010
    Inventors: Hiroyuki Hirata, Atsuro Iseda, Hirokazu Okada, Hiroyuki Semba, Kaori Kawano, Osamu Miyahara
  • Patent number: 7708846
    Abstract: For a group of nickel-based superalloys, improved properties have been obtained by stabilizing at increased temperature for a reduced time relative to prior art specifications. In particular, improved creep properties have been obtained with a one-hour 1800° F. stabilization relative to a prior art four-hour 1500° F. stabilization.
    Type: Grant
    Filed: November 28, 2005
    Date of Patent: May 4, 2010
    Assignee: United Technologies Corporation
    Inventor: David R. Malley
  • Publication number: 20100092301
    Abstract: A component for a high-temperature steam turbine which operates at temperatures above 600° C., especially above 700° C., is formed of a nickel-based alloy. The negative influence of oxidation of the component which is induced by the superheated steam is prevented by the alloy which is used, having the following composition (in % by weight): C: ?0.2 Si: ?1.0 Mn: ?1.0 Cr: 22.0-25.0 Co: 15.0-25.0 Mo: ?3.0 Nb: ?2.0 Al: 1.0-3.0 Ti: 2.0-4.0 Fe: ?2.0 Zr: ?0.2 B: ??0.05 Ni: remainder.
    Type: Application
    Filed: October 27, 2008
    Publication date: April 15, 2010
    Inventor: Richard Brendon Scarlin
  • Publication number: 20100043924
    Abstract: A method for locally heat-treating a gas turbine engine superalloy article to improve resistance to strain-induced fatigue of the article is disclosed. The method comprises providing a gas turbine engine superalloy article having a gamma prime solvus temperature; and locally over aging only a selected portion of the article to locally improve fatigue resistance at the selected portion of the article, wherein the local over age cycle includes heating at about 843° C. for about 3 to 4 hours.
    Type: Application
    Filed: December 18, 2008
    Publication date: February 25, 2010
    Inventor: Jon Raymond Groh
  • Patent number: 7662740
    Abstract: A fuel cell catalyst comprising platinum, chromium, and copper, nickel or a combination thereof. In one or more embodiments, the concentration of platinum is less than 50 atomic percent, and/or the concentration of chromium is less than 30 atomic percent, and/or the concentration of copper, nickel, or a combination thereof is at least 35 atomic percent.
    Type: Grant
    Filed: June 3, 2004
    Date of Patent: February 16, 2010
    Assignees: Symyx Technologies, Inc., Honda Giken Kogyo Kabushiki Kaisha
    Inventors: Konstantinos Chondroudis, Alexander Gorer, Martin Devenney, Ting He, Hiroyuki Oyanagi, Daniel M. Giaquinta, Kenta Urata, Hiroichi Fukuda, Qun Fan, Peter Strasser, Keith James Cendak, Jennifer N. Cendak, legal representative
  • Patent number: 7597843
    Abstract: Nickel based superalloys with excellent mechanical strength, corrosion resistance and oxidation resistance, which consist essentially of chromium in an amount of 3 to 7% by weight, cobalt in an amount of 3 to 15% by weight, tungsten in an amount of 4.5 to 8% by weight, rhenium in an amount of 3.3 to 6% by weight, tantalum in an amount of 4 to 8% by weight, titanium in an amount of 0.8 to 2% by weight, aluminum in an amount of 4.5 to 6.5% by weight, ruthenium in an amount of 0.1 to 6%, hafnium in an amount of 0.01 to 0.2% by weight, molybdenum in an amount of less than 0.5% by weight, carbon in an amount 0.06% by weight or less, boron in an amount of 0.01% by weight or less, zirconium in an amount of 0.01% by weight or less, oxygen in an amount of 0.005% by weight or less, nitrogen in an amount of 0.005% by weight or less and inevitable impurities and the balance being nickel.
    Type: Grant
    Filed: August 29, 2005
    Date of Patent: October 6, 2009
    Assignees: Hitachi, Ltd., The Kansai Electric Power Co., Inc.
    Inventors: Akira Yoshinari, Ryokichi Hashizume, Masahiko Morinaga, Yoshinori Murata
  • Patent number: 7591910
    Abstract: Bulk amorphous alloys based on quaternary Ni—Zr—Ti—Al alloy system, and the extension of this quaternary system to higher order alloys by the addition of one or more alloying elements, methods of casting such alloys, and articles made of such alloys are provided.
    Type: Grant
    Filed: December 4, 2003
    Date of Patent: September 22, 2009
    Assignee: California Institute of Technology
    Inventors: Donghua Xu, William L. Johnson
  • Patent number: 7547188
    Abstract: A Ni-based alloy member has resistance against grain boundary fracture, fatigue strength, and oxidation resistance at temperatures near 1000° C. or higher. The Ni-based alloy member includes a non-repaired region made of a Ni-based alloy base and a region repaired by welding, which is formed on the non-repaired region and which is made of a buildup-welded layer, the buildup-welded layer being made of a Ni-based alloy containing, by weight, 15% or less of Co, 18-22% of Cr, 0.8-2.0% of Al, 5.0% or less of Ta, 0.5% or less of Mo, 0.5% or less of Ti, 13-18% of W, 0.05-0.13% of C, 0.06% or less of Zr, 0.015% or less of B, 0.4-1.2% of Mn, and 0.1-0.3% of Si, the balance of the alloy being preferably essentially made of Ni.
    Type: Grant
    Filed: February 17, 2006
    Date of Patent: June 16, 2009
    Assignee: Hitachi, Ltd.
    Inventors: Shinya Imano, Hiroyuki Doi, Kunihiro Ichikawa, Katsumi Tanaka
  • Publication number: 20090136382
    Abstract: A Ni-based heat resistant alloy for a gas turbine combustor, comprising a composition containing, in mass %, Cr: 14.0 to 21.5%, Co: 6.5 to 14.5%, Mo: 6.5 to 10.0%, W: 1.5 to 3.5%, Al: 1.2 to 2.4%, Ti: 1.1 to 2.1%; Fe: 7.0% or less, B: 0.001 to 0.020%, C: 0.03 to 0.15%, and a balance consisting of Ni and unavoidable impurities, wherein a content of S and P contained in the unavoidable impurities is controlled to be, in mass %, S: 0.015% or less, and P: 0.015% or less, wherein the alloy has a texture in which M6C type carbide and MC type carbide are uniformly dispersed in ? phase matrix.
    Type: Application
    Filed: April 13, 2007
    Publication date: May 28, 2009
    Applicants: Mitsubishi Materials Corporation, Mitsubishi Heavy Industries, Ltd.
    Inventors: Takanori Matsui, Komei Kato, Takuya Murai, Yoshitaka Uemura, Daisuke Yoshida, Ikuo Okada
  • Publication number: 20090123328
    Abstract: A wire for welding Ni-based heat resistant alloy, comprising: a composition containing, in mass %, Cr: 14.0 to 21.5%, Co: 6.5 to 14.5%, Mo: 6.5 to 10.0%, W: 1.5 to 3.5%, Al: 1.2 to 2.4%, Ti: 1.1 to 2.1%; Fe: 7.0% or less, B: 0.0001 to 0.020%, C: 0.03 to 0.15%, and a balance of Ni and unavoidable impurities, wherein a content of S and P contained in the unavoidable impurities is controlled to be, in mass %, S: 0.004% or less, and P: 0.010% or less, wherein the wire has a texture in which M6C type carbide and MC type carbide are uniformly dispersed in the matrix.
    Type: Application
    Filed: April 16, 2007
    Publication date: May 14, 2009
    Applicants: Mitsubishi Materials Corporation, Mitsubishi Heavy Industries , Ltd.
    Inventors: Takanori Matsui, Komei Kato, Takuya Murai, Yoshitaka Uemura, Daisuke Yoshida, Ikuo Okada
  • Patent number: 7531054
    Abstract: Embodiments of the present disclosure relate to nickel-base alloys and methods of direct aging nickel-base alloys. More specifically, certain embodiments of the present disclosure relate to methods of direct aging 718Plus® nickel-base alloy to impart improved mechanical properties, such as, but not limited to, tensile strength, yield strength, low cycle fatigue, fatigue crack growth, and creep and rupture life to the alloys. Other embodiments of the present disclosure relate to direct aged 718Plus® nickel-base alloy, and articles of manufacture made therefrom, having improved mechanical properties, such as, but not limited to, tensile strength, yield strength, low cycle fatigue, fatigue crack growth, and creep and rupture life.
    Type: Grant
    Filed: September 6, 2005
    Date of Patent: May 12, 2009
    Assignee: ATI Properties, Inc.
    Inventors: Richard L. Kennedy, Wei-Di Cao
  • Patent number: 7484926
    Abstract: A steam turbine power plant which is provided with an extra-high-pressure turbine 100, a high-pressure turbine 200, an intermediate-pressure turbine 300 and a low-pressure turbine 400, and has high-temperature steam of 650° C. or more introduced into the extra-high-pressure turbine 100, wherein the extra-high-pressure turbine 100 has an outer casing cooling unit which cools an outer casing 111, and a turbine rotor 112, an inner casing 110 and a nozzle box 115 of the extra-high-pressure turbine 100 are formed of an Ni base heat-resisting alloy, and the outer casing 111 is formed of a ferrite-based alloy.
    Type: Grant
    Filed: March 15, 2006
    Date of Patent: February 3, 2009
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Takeo Suga, Ryuichi Ishii, Takeo Takahashi, Masafumi Fukuda
  • Publication number: 20080253923
    Abstract: A nickel-based superalloy that forms a chromia scale in an oxidizing environment is disclosed. The alloy provides good oxidation resistance at temperatures below 900° C. in a dry or moist atmosphere. The superalloy is suited for components of gas or steam turbine engines including blades and vanes.
    Type: Application
    Filed: April 10, 2007
    Publication date: October 16, 2008
    Inventors: Douglas J. Arrell, Allister W. James
  • Publication number: 20080166258
    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)]. The gamma prime phase has an average grain diameter (d) of not less than 25 nanometers, and a hardness-diameter ratio (Hv/d) of a Vickers hardness Hv of a position at a depth of one-fourth of the entire thickness or the wire diameter from a surface of the Ni-based alloy material toward its center and the average grain diameter d(nanometer) is 5 to 25.
    Type: Application
    Filed: September 24, 2007
    Publication date: July 10, 2008
    Applicants: Nippon Seisen Co., Ltd., Chuo Spring Co., Ltd.
    Inventors: Yoshinori Tanimoto, Naoyuki Kawahata, Shoji Ichikawa, Hiroyuki Shiga
  • Patent number: 7384597
    Abstract: An organic silver salt composition used for thermally developable photothermographic material is disclosed, comprising at least two organic acids differing in melting point and their silver salts, wherein a silver salt of a lower-melting organic acid account for 10 to 80 mol % of the silver salts and the lower melting organic acid accounting for 0 to 30 mol % of the acids. A method of manufacturing an organic silver salt compositions also disclosed.
    Type: Grant
    Filed: September 7, 2005
    Date of Patent: June 10, 2008
    Assignee: Konica Minolta Medical & Graphic, Inc.
    Inventors: Satoshi Ito, Kazuhiko Fujikura
  • Publication number: 20070221298
    Abstract: The present invention provides a Ni-based super alloy including, by mass %, C: 0.01 to 0.15%; Si: 1% or less; Mn: 1% or less; P: 0.02% or less; S: 0.01% or less; Co: less than 0.10%; Cr: 16 to 22%; Mo: 4 to 10%; W: 5% or less; Al: 1.2 to 2.5%; Ti: 2.4 to 4%; B: 0.001 to 0.05%; Zr: 0.01 to 0.5%; Fe: 1% or less; and a balance of Ni and inevitable impurities.
    Type: Application
    Filed: March 20, 2007
    Publication date: September 27, 2007
    Applicant: DAIDO TOKUSHUKO KABUSHIKI KAISHA
    Inventors: Seiji Kurata, Shigeki Ueta, Tetsuya Shimizu
  • Patent number: 7220326
    Abstract: A family of castable and weldable nickel-base alloys that exhibit a desirable balance of strength and resistance to corrosion and oxidation suitable for gas turbine engine applications. A first alloy consists essentially of, by weight, 1 8% to 20% cobalt, 22.2% to 22.8% chromium, 1.8% to 2.2% tungsten, greater than 1.5% to 2.3% aluminum, 1.6% to 2.4% titanium, where the sum of aluminum and titanium is 2.8% to 4.4%, 0.7% to 0.9% columbium, 0.9% to 1.9% tantalum, 0.003% to 0.009% boron, 0.002% to 0.02% zirconium, 0.05% to 0.10% carbon, with the balance essentially nickel and incidental impurities. A second alloy consists essentially of, by weight, 5% to 8% cobalt, 22.2% to 22.8% chromium, 1.8% to 2.2% tungsten, 1.2% to 2.3% aluminum, 1.6% to 2.4% titanium, where the sum of aluminum and titanium is 2.8% to 4.4%, 0.7% to 0.9% columbium, 0.9% to 1.9% tantalum, 0.003% to 0.009% boron, 0.002% to 0.02% zirconium, 0.05% to 0.10% carbon, with the balance essentially nickel and incidental impurities.
    Type: Grant
    Filed: September 26, 2002
    Date of Patent: May 22, 2007
    Assignee: General Electric Company
    Inventors: Cyril Gerard Beck, John Herbert Wood, Stephen Daniel Graham, Warren Tan King
  • Patent number: 7208116
    Abstract: A nickel base superalloy comprising 14.0 to 20.0 wt % cobalt, 13.5 to 17.0 wt % chromium, 2.5 to 4.0 wt % aluminium, 3.4 to 5.0 wt % titanium, 0 to 3.0 wt % tantalum, 3.8 to 5.5 wt % molybdenum, 0.035 to 0.07 wt % carbon, 0.01 to 0.04 wt % boron, 0.055 to 0.075 wt % zirconium, 0 to 0.4 wt % hafnium and the balance nickel plus incidental impurities. The nickel base superalloy is suitable for use as gas turbine engine high pressure compressor rotor discs or turbine discs. It is capable of operation at temperatures above 700° C. and has good fatigue crack propagation resistance, creep resistance and tensile strength.
    Type: Grant
    Filed: September 26, 2001
    Date of Patent: April 24, 2007
    Assignee: Rolls-Royce plc
    Inventors: Andrew J Manning, David Knowles, Colin J Small
  • Patent number: 7165325
    Abstract: A welding material composition, which is a nickel based super alloy having ?? phase and chromium carbides precipitated. The composition comprising 18 to 25% by weight of Co, 15 to 20% by weight of Cr, 1.5 to 5.5% by weight of Al, 5 to 14% by weight of W, 0.05 to 0.15% by weight of C, 0 to 0.02% by weight of B, 0 to 1% by weight of at least one of Ta, Nb, Ti, Mo, Re and Fe, 0 to 0.5% by weight of at least one of V, Zr, rare earth elements and Y, 0 to 1% by weight of Mn, 0 to 0.5% by weight of Si, and the balance being Ni.
    Type: Grant
    Filed: August 7, 2003
    Date of Patent: January 23, 2007
    Assignee: Hitachi, Ltd.
    Inventors: Shinya Imano, Hiroyuki Doi, Kunihiro Ichikawa, Hideaki Ishii
  • Patent number: 7052782
    Abstract: A high-temperature protection layer contains (% by weight) 23 to 27% Cr, 4 to 7% Al, 0.1 to 3% Si, 0.1 to 3% Ta, 0.2 to 2% Y, 0.001 to 0.01% B, 0.001 to 0.01% Mg and 0.001 to 0.01% Ca, remainder Ni and inevitable impurities. Optionally, the Al content is in a range from over 5 up to 6% by weight.
    Type: Grant
    Filed: July 19, 2004
    Date of Patent: May 30, 2006
    Assignee: ALSTOM Technology Ltd.
    Inventors: Hans-Peter Bossmann, Dietrich Eckardt, Klaus Erich Schneider, Christoph Toennes
  • Patent number: 7014723
    Abstract: Castable and weldable nickel-base alloys that exhibit a desirable balance of strength and resistance to corrosion and oxidation suitable for gas turbine engine applications. The alloy contains, by weight, about 10% to about 25% cobalt, about 20% to about 28% chromium, about 1% to about 3% tungsten, about 1.6% to about 3.8% aluminum, about 0.4% to about 1.5% titanium, where the sum of aluminum and titanium is about 1.8% to about 5.0%, about 0.5% to about 1.5% columbium, 0.5% to about 1.5% tantalum, about 0.001% to about 0.025% boron, about 0.05% maximum zirconium, about 0.02% to about 0.15% carbon, with the balance essentially nickel and incidental impurities. The alloy may more preferably contain about 2.8% to about 3.8% aluminum where the sum of aluminum and titanium is about 3.0% to about 5.0%, or about 1.6% to about 2.8% aluminum, where the sum of aluminum and titanium is about 1.8% to about 4.3%.
    Type: Grant
    Filed: September 26, 2002
    Date of Patent: March 21, 2006
    Assignee: General Electric Company
    Inventors: Cyril Gerard Beck, John Herbert Wood, Stephen Daniel Graham