Nickel(ni) Or Nickel Base Alloy Patents (Class 148/555)
  • Patent number: 10526688
    Abstract: There is provided a Ni-based intermetallic alloy having a dual multi-phase microstructure containing a primary precipitate L12 phase and an (L12+D022) eutectoid microstructure. Thus, the Ni-based intermetallic alloy contains Ni, Al, and V as basic elements, and the contents of Ni, Al, and V are controlled to form the dual multi-phase microstructure. The Ni-based intermetallic alloy further contains at least one of Zr and Hf in addition to the basic elements.
    Type: Grant
    Filed: February 22, 2018
    Date of Patent: January 7, 2020
    Assignees: HONDA MOTOR CO., LTD., OSAKA PREFECTURE UNIVERSITY PUBLIC CORPORATION
    Inventors: Kazuki Nagao, Yusuke Kikuchi, Masahiro Hayashi, Takayuki Takasugi, Yasuyuki Kaneno
  • Patent number: 10000834
    Abstract: Ni—Cr—Nb—P—B alloys and metallic glasses are provided, where Nb and B are varied such as to achieve alloys with good glass forming ability that form metallic glasses which may exhibit unexpectedly high strength and/or high thermal stability of the supercooled liquid. Specifically, the alloys of the current disclosure are capable of forming metallic glasses and have critical rod diameters of at least 3 mm, while the metallic glasses exhibit yield strength greater than 2550 MPa and stability of the supercooled liquid of at least 45° C.
    Type: Grant
    Filed: November 13, 2014
    Date of Patent: June 19, 2018
    Assignees: Glassimetal Technology, Inc., Apple Inc.
    Inventors: Jong Hyun Na, Maximilien Launey, Danielle Duggins, Oscar Abarca, Marios D. Demetriou, William L. Johnson
  • Patent number: 9285845
    Abstract: In some embodiments, cooling devices with metal hydrides are disclosed.
    Type: Grant
    Filed: December 27, 2012
    Date of Patent: March 15, 2016
    Assignees: Intel Corporation, University of Nevada
    Inventors: Dhanesh Chandra, Daryl J. Nelson, Muralidhar Tirumala, Anupam Kumar, Anjali Talekar
  • Publication number: 20150047755
    Abstract: The present disclosure is directed to Ni—P—B alloys and glasses containing small fractions of Nb and Ta and optionally Mn. Over a specific range, the alloys are capable of forming bulk metallic glasses having critical casting thickness in excess of 1 mm. In one embodiment, compositions with a Mn content of between 3 and 4 atomic percent, Nb content of about 3 atomic percent, B content of about 3 atomic percent, and P content of about 16.5 atomic percent, where the balance in Ni, were capable of forming bulk metallic glass rods with diameters as large as 5 mm or larger. In another embodiment, Ni-based compositions with a Mn content of between 5 and 7 atomic percent, Ta content of between 1 and 2 atomic percent, B content of about 3 atomic percent, and P content of about 16.5 atomic percent, where the balance in Ni, were capable of forming bulk metallic glass rods with diameters as large as 5 mm or larger.
    Type: Application
    Filed: August 12, 2014
    Publication date: February 19, 2015
    Inventors: Jong Hyun Na, Danielle Duggins, Michael Floyd, Glenn Garrett, Maximilien Launey, Marios D. Demetriou, William L. Johnson
  • Publication number: 20150050181
    Abstract: A fluxing method is disclosed by which the melt of aluminum-contaminated Ni-based glass-forming alloys is fluxed using a fluxing agent based on boron and oxygen in order to reverse the adverse effects of aluminum impurities on the glass-forming ability and toughness.
    Type: Application
    Filed: August 12, 2014
    Publication date: February 19, 2015
    Inventors: Jong Hyun Na, Michael Floyd, Danielle Duggins, David S. Lee, Marios D. Demetriou, William L. Johnson
  • Publication number: 20140345755
    Abstract: A Ni-based bulk metallic glass forming alloy is provided. The alloy includes Ni(100-a-b-c-d)CraNbbPcBd, where an atomic percent of chromium (Cr) a ranges from 3 to 13, an atomic percent of niobium (Nb) b is determined by x?y*a, where x ranges from 3.8 to 4.2 and y ranges from 0.11 to 0.14, an atomic percent of phosphorus (P) c ranges from 16.25 to 17, an atomic percent of boron (B) d ranges from 2.75 to 3.5, and the balance is nickel (Ni), and where the alloy is capable of forming a metallic glass object having a lateral dimension of at least 6 mm, where the metallic glass has a stress intensity factor at crack initiation when measured on a 3 mm diameter rod containing a notch with length between 1 and 2 mm and root radius between 0.1 and 0.15 mm, the stress intensity factor being at least 70 MPa m1/2.
    Type: Application
    Filed: October 30, 2013
    Publication date: November 27, 2014
    Applicant: Glassimetal Technology, Inc.
    Inventors: Jong Hyun Na, Michael Floyd, Marios D. Demetriou, William L. Johnson, Glenn Garrett, Maximilien Launey
  • 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: 20140283956
    Abstract: The disclosure is directed to a method of forming high-aspect-ratio metallic glass articles that are substantially free of defects and cosmetic flaws by means of rapid capacitive discharge forming. Metallic glass alloys that are stable against crystallization for at least 100 ms at temperatures where the viscosity is in the range of 100 to 104 Pa-s are considered as suitable for forming such high-aspect-ratio articles.
    Type: Application
    Filed: March 17, 2014
    Publication date: September 25, 2014
    Applicant: Glassimetal Technology, Inc.
    Inventors: Joseph P. Schramm, Jong Hyun Na, Marios D. Demetriou, David S. Lee, William L. Johnson
  • Publication number: 20140269228
    Abstract: A metal structure includes, by mass %, Fe: 10% to 30%; S: 0.005% to 0.2%; and the balance consisting of Ni and unavoidable impurities, in which a maximum grain size of the metal structure is 500 nm or less.
    Type: Application
    Filed: March 11, 2014
    Publication date: September 18, 2014
    Applicant: SEIKO INSTRUMENTS INC.
    Inventors: Miei KONISHI, Matsuo KISHI, Takashi NIWA
  • Publication number: 20140202596
    Abstract: A method of forming a bulk metallic glass is provided. The method includes overheating the alloy melt to a temperature above a threshold temperature, Ttough, associated with the metallic glass demonstrating substantial improvement in toughness compared to the toughness demonstrated in the absence of overheating the melt above Tliquidus, and another threshold temperature, TGFA, associated with the metallic glass demonstrating substantial improvement in glass-forming ability compared to the glass-forming ability demonstrated in the absence of overheating the melt above Tliquidus. After overheating the alloy melt to above Ttough and TGFA, the melt may be cooled and equilibrated to an intermediate temperature below both Ttough and TGFA but above Tliquidus, and subsequently quenched at a high enough rate to form a bulk metallic glass.
    Type: Application
    Filed: January 22, 2014
    Publication date: July 24, 2014
    Applicant: GLASSIMETAL TECHNOLOGY, INC.
    Inventors: Jong Hyun NA, Michael FLOYD, David S. LEE, Marios D. DEMETRIOU, William L. JOHNSON, Glenn GARRETT
  • Publication number: 20140130945
    Abstract: A bulk-glass forming Ni—Cr—Nb—P—B alloy is provided. The alloy includes Ni(100?a?b?c?d)CraTabPcBd, where the atomic percent a is between 3 and 11, the atomic percent b is between 1.75 and 4, the atomic percent c is between 14 and 17.5, and the atomic percent d is between 2.5 and 5. The alloy is capable of forming a metallic glass having a lateral dimension of at least 3 mm.
    Type: Application
    Filed: November 15, 2013
    Publication date: May 15, 2014
    Applicant: Glassimetal Technology, Inc.
    Inventors: Jong Hyun Na, Michael Floyd, Marios D. Demetriou, William L. Johnson, Glenn Garrett
  • Publication number: 20140116579
    Abstract: A Ni-based bulk metallic glass forming alloy is provided. The alloy includes Ni(100-a-b-c-d)CraNbbPcBd, where an atomic percent of chromium (Cr) a ranges from 3 to 13, an atomic percent of niobium (Nb) b is determined by x?y*a, where x ranges from 3.8 to 4.2 and y ranges from 0.11 to 0.14, an atomic percent of phosphorus (P) c ranges from 16.25 to 17, an atomic percent of boron (B) d ranges from 2.75 to 3.5, and the balance is nickel (Ni), and where the alloy is capable of forming a metallic glass object having a lateral dimension of at least 6 mm, where the metallic glass has a stress intensity factor at crack initiation when measured on a 3 mm diameter rod containing a notch with length between 1 and 2 mm and root radius between 0.1 and 0.15 mm, the stress intensity factor being at least 70 MPa m1/2.
    Type: Application
    Filed: October 30, 2013
    Publication date: May 1, 2014
    Applicant: Glassimetal Technology, Inc.
    Inventors: Jong Hyun Na, Michael Floyd, Marios D. Demetriou, William L. Johnson, Glenn Garrett, Maximilien Launey
  • Patent number: 8696979
    Abstract: A Ni-base superalloy having a chemical composition comprising Al: 4.5-7.0 wt %, Ta+Nb+Ti: 0.1-4.0 wt %, with Ta being less than 4.0 wt %, Mo: 1.0-8.0 wt %, W: 0.0-10.0 wt %, Re: 2.0-8.0 wt %, Hf: 0.0-1.0 wt %, Cr: 2.0-10.0 wt %, Co: 0.0-15.0 wt %, Ru: 0.0-5.0 wt %, and the balance being Ni and unavoidable impurities, and a method for producing the same are disclosed. The Ni-base superalloy has excellent creep property at high temperature and is suitable for use as a member at high temperature under high stress.
    Type: Grant
    Filed: March 16, 2007
    Date of Patent: April 15, 2014
    Assignee: National Institute for Materials Science
    Inventors: Tadaharu Yokokawa, Yutaka Koizumi, Hiroshi Harada, Toshiharu Kobayashi
  • Publication number: 20140096873
    Abstract: The disclosure provides Ni—Mo—P—B, Ni—Mo—Nb—P—B, and Ni—Mo—Nb—Mn—P—B alloys capable of forming metallic glass objects. The metallic glass objects can have lateral dimensions in excess of 1 mm and as large as 3 mm or larger. The disclosure also provides methods for forming the metallic glasses.
    Type: Application
    Filed: October 8, 2013
    Publication date: April 10, 2014
    Applicant: GLASSIMETAL TECHNOLOGY, INC.
    Inventors: Jong Hyun Na, Michael Floyd, Glenn Garrett, Marios D. Demetriou, William L. Johnson
  • Publication number: 20140076467
    Abstract: Nickel based alloys capable of forming bulk metallic glass are provided. The alloys include Ni—Cr—Si—B compositions, with additions of P and Mo, and are capable of forming a metallic glass rod having a diameter of at least 1 mm. In one example of the present disclosure, the Ni—Cr—Mo—Si—B—P composition includes about 4.5 to 5 atomic percent of Cr, about 0.5 to 1 atomic percent of Mo, about 5.75 atomic percent of Si, about 11.75 atomic percent of B, about 5 atomic percent of P, and the balance is Ni, and wherein the critical metallic glass rod diameter is between 2.5 and 3 mm and the notch toughness between 55 and 65 MPa m1/2.
    Type: Application
    Filed: September 17, 2013
    Publication date: March 20, 2014
    Applicant: Glassimetal Technology Inc.
    Inventors: Jong Hyun Na, Michael Floyd, Glenn Garrett, Marios D. Demetriou, William L. Johnson
  • Publication number: 20140053956
    Abstract: The disclosure refers to a method for manufacturing a three-dimensional article, the method including successively building up the article from a metallic base material by means of an additive manufacturing process, thereby creating an article with a substantial anisotropy of its properties and heat treating the manufactured article at a sufficiently high temperature to reduce the anisotropy significantly by recrystallization and/or grain coarsening.
    Type: Application
    Filed: August 21, 2013
    Publication date: February 27, 2014
    Applicant: ALSTOM Technology Ltd
    Inventors: Thomas ETTER, Julius SCHURB, Lukas Emanuel RICKENBACHER, Andreas KÜNZLER
  • Patent number: 8597440
    Abstract: A process and alloy for producing a turbine blade whose properties enable the blade to operate within a steam turbine at maximum operating temperatures of greater than 1300° F. (about 705° C.). The process includes casting the blade from a gamma prime-strengthened nickel-base superalloy having a composition of, by weight, 14.25-15.75% cobalt, 14.0-15.25% chromium, 4.0-4.6% aluminum, 3.0-3.7% titanium, 3.9-4.5% molybdenum, 0.05-0.09% carbon, 0.012-0.020% boron, maximum 0.5% iron, maximum 0.2% silicon, maximum 0.15% manganese, maximum 0.04% zirconium, maximum 0.015% sulfur, maximum 0.1% copper, balance nickel and incidental impurities, and an electron vacancy number of 2.32 maximum. The casting then undergoes a high temperature solution heat treatment to promote resistance to hold-time cracking. The blade exhibits a combination of yield strength, stress rupture properties, environmental resistance, and cost in steam turbine applications to 1400° F. (about 760° C.).
    Type: Grant
    Filed: August 31, 2009
    Date of Patent: December 3, 2013
    Assignee: General Electric Company
    Inventors: Afina Lupulescu, Robert Edward Deallenbach, Robin Carl Schwant
  • Publication number: 20130276939
    Abstract: This invention is concerned with the productions of unidirectionally solidified castings and remelting processed ingots such as ESR or VAR, which has paid special attention to the liquid flow phenomena within solid-liquid coexisting phase (mushy phase) during solidification, and made it clear for the first time that by applying high static magnetic field onto the whole mushy phase, the extremely slow interdendritic liquid flow responsible for the formation of macrosegregation can be suppressed, and thereby that the macrosegregation such as freckles can completely be eliminated. Thus, this invention provides with a novel casting technology for producing high quality castings and ingots without macrosegregation.
    Type: Application
    Filed: June 20, 2013
    Publication date: October 24, 2013
    Inventor: Yoshio EBISU
  • Publication number: 20130263977
    Abstract: A method for manufacturing a component or coupon made of a high temperature superalloy based on Ni, Co, Fe or combinations thereof includes forming the component or coupon using a powder-based additive manufacturing process. The manufacturing process includes completely melting the powder followed by solidifying the powder. The formed component or coupon is subjected to a heat treatment so as to optimize specific material properties. The heat treatment takes place at higher temperatures compared to cast components or coupons.
    Type: Application
    Filed: October 31, 2012
    Publication date: October 10, 2013
    Applicant: ALSTOM TECHNOLOGY LTD
    Inventor: ALSTOM Technology Ltd
  • Publication number: 20130213532
    Abstract: A hydrogen storage alloy with at least two phases containing La, Ni, and Y or a heavy rare earth element, including a first phase having a composition represented by the general formula R1aR2bR3cNidR4e (wherein R1 is at least one element essentially containing La, R2 is at least one element selected from the group consisting of Y and a heavy rare earth element, R3 is Ca and/or Mg, R4 is at least one element selected from the group consisting of Co, Mn and Al, and a, b, c, d and e are numerical values that satisfy the numerical expressions a+b+c=1, 0?b?0.3, 0?c?0.4, 3.0<d+e<4.0, and 0?e?1) and a second phase having a higher concentration of Y or a heavy rare earth element than that of the first phase, and is dispersed in the first phase.
    Type: Application
    Filed: February 13, 2013
    Publication date: August 22, 2013
    Applicant: GS YUASA INTERNATIONAL LTD.
    Inventor: GS Yuasa International Ltd.
  • Publication number: 20130195709
    Abstract: A metal base alloy and methods for producing the alloy. The metal base alloy product includes the formula Mebase Ta Sib Crc Mnj Ve Cf, wherein—Mebase is a metal base selected from the group having Fe, Co and Ni, in an amount ranging from about 45-75 w %. The metal base alloy product contains a substantially homogenous dispersion of separate precipitated carbide particles in an amount ranging from 10-65 percentages by volume and the precipitate carbide particles have an average diameter of 0.01-5 micrometers.
    Type: Application
    Filed: June 23, 2011
    Publication date: August 1, 2013
    Applicant: SUPERIOR METALS SWEDEN AB
    Inventors: Sathees Ranganathan, Sohrab Solaimanzadeh-Azar, Hasse Fredriksson, Advenit Makaya
  • Publication number: 20130189149
    Abstract: The present invention provides an Ni-based intermetallic compound alloy having excellent hardness. The present invention provides an Ni-based dual multi-phase intermetallic compound alloy comprising Ni as a main component, and 5 to 12 atomic % of Al, 11 to 17 atomic % of V and 1 to 5 atomic % of Re, and having a dual multi-phase microstructure including a primary precipitate L12 phase and a (L12+D022) eutectoid microstructure.
    Type: Application
    Filed: July 20, 2011
    Publication date: July 25, 2013
    Applicant: OSAKA PREFECTURE UNIVERSITY PUBLIC CORPORATION
    Inventors: Takayuki Takasugi, Yasuyuki Kaneno
  • Publication number: 20130014862
    Abstract: The present invention provides an Ni-base dual multi-phase intermetallic compound alloy which has a dual multi-phase microstructure including: a primary precipitate L12 phase and an (L12+D022) eutectoid microstructure, and which comprises more than 5 atomic % and up to 13 atomic % of Al; at least 9.5 atomic % and less than 17.5 atomic % of V; between 0 atomic % and 5.0 atomic % inclusive of Nb; more than 0 atomic % and up to 12.5 atomic % of Ti; more than 0 atomic % and up to 12.5 atomic % of C; and a remainder comprising Ni.
    Type: Application
    Filed: March 25, 2011
    Publication date: January 17, 2013
    Applicant: OSAKA PREFECTURE UNIVERSITY PUBLIC CORPORATION
    Inventors: Takayuki Takasugi, Yasuyuki Kaneno
  • Patent number: 8353444
    Abstract: The present invention is directed to a process for repairing cracks in a turbine engine component. The process comprises the steps of providing a component, preferably formed from a single crystal nickel based material, with at least one crack, applying a repair alloy composition containing a single crystal nickel based alloy, a first nickel based braze alloy and a second nickel based braze alloy to the crack(s), and subjecting the component with the applied repair alloy composition to a thermal cycle to diffuse the repair alloy composition into the crack(s).
    Type: Grant
    Filed: October 28, 2005
    Date of Patent: January 15, 2013
    Assignee: United Technologies Corporation
    Inventors: Norman Pietruska, Beth Kwiatkowski Abriles, John F. Falkowski
  • Publication number: 20130008572
    Abstract: The present invention provides an Ni-base dual multi-phase intermetallic compound alloy which has a dual multi-phase microstructure comprising a primary precipitate L12 phase and an (L12+D022) eutectoid microstructure, and which comprises: more than 5 atomic % and up to 13 atomic % of Al; at least 9.5 atomic % and less than 17.5 atomic % of V; more than 0 atomic % and up to 12.5 atomic % of Nb; more than 0 atomic % and up to 12.5 atomic % of C; and a remainder comprising Ni.
    Type: Application
    Filed: March 25, 2011
    Publication date: January 10, 2013
    Applicant: OSAKA PREFECTURE UNIVERSITY PUBLIC CORPORATION
    Inventors: Takayuki Takasugi, Yasuyuki Kaneno
  • Publication number: 20120318413
    Abstract: Provided is a hydrogen storage alloy which is characterized in that two or more crystal phases having different crystal structures are layered in a c-axis direction of the crystal structures. The hydrogen storage alloy is further characterized in that a difference between a maximum value and a minimum value of a lattice constant a in the crystal structures of the laminated two or more crystal phases is 0.03 ? or less.
    Type: Application
    Filed: August 16, 2012
    Publication date: December 20, 2012
    Applicants: National Institute of Advanced Science and Technology, GS Yuasa Corporation
    Inventors: Tadashi KAKEYA, Manabu KANEMOTO, Minoru KUZUHARA, Tetsuya OZAKI, Masaharu WATADA, Tetsuo SAKAI
  • Patent number: 8317950
    Abstract: A hydrogen-absorbing alloy for alkaline storage battery which is produced by a rapid cool using a rapid quenching method and whose component is represented by a general formula Ln1-xMgxNia-b-cAlbZc is used for a negative electrode of an alkaline storage battery.
    Type: Grant
    Filed: September 11, 2008
    Date of Patent: November 27, 2012
    Assignee: SANYO Electric Co., Ltd.
    Inventors: Yoshifumi Magari, Jun Ishida, Shigekazu Yasuoka
  • Publication number: 20120273093
    Abstract: Nickel based alloys are provided comprising from about 7.0 weight percent (wt %) to about 12.0 wt % chromium, from about 0.1 wt % to about 5 wt % molybdenum, from about 0.2 wt % to about 4.5 wt % titanium, from about 4 wt % to about 6 wt % aluminum, from about 3 wt % to about 4.9 wt % cobalt, from about 6.0 wt % to about 9.0 wt % tungsten, from about 4.0 wt % to about 6.5 wt % tantalum, from about 0.05 wt % to about 0.6 wt % hafnium, up to about 1.0 wt % niobium, up to about 0.02 wt % boron, and up to about 0.1 wt % carbon, with the remainder being nickel and incidental impurities. The alloys may be cast, directionally solidified and heat treated to provide articles having a gamma prime fraction of greater than about 50%.
    Type: Application
    Filed: July 10, 2012
    Publication date: November 1, 2012
    Applicant: General Electric Company
    Inventors: Timothy Hanlon, Richard Didomizio, Michael Francis Henry, Akane Suzuki, Arthur Samuel Peck, Stephen Joseph Balsone
  • Patent number: 8262817
    Abstract: A first-stage turbine that is adapted for receiving high energy air directly from a combustion chamber in a gas turbine engine auxiliary power unit includes a disk formed from a first alloy and having an outer surface, and a unitary blade wheel formed from a second alloy that is different than the first alloy. The unitary blade wheel includes an annular member having an inner surface that is joined to the disk, and blades that are integrally formed with the annular member.
    Type: Grant
    Filed: June 11, 2007
    Date of Patent: September 11, 2012
    Assignee: Honeywell International Inc.
    Inventors: Scott J. Marshall, Victor M. Reyes, Timothy R. O'Brien, Huy Tran, Andrew F. Szuromi
  • Patent number: 8226886
    Abstract: Nickel based alloys are provided comprising from about 7.0 weight percent (wt %) to about 12.0 wt % chromium, from about 0.1 wt % to about 5 wt % molybdenum, from about 0.2 wt % to about 4.5 wt % titanium, from about 4 wt % to about 6 wt % aluminum, from about 3 wt % to about 4.9 wt % cobalt, from about 6.0 wt % to about 9.0 wt % tungsten, from about 4.0 wt % to about 6.5 wt % tantalum, from about 0.05 wt % to about 0.6 wt % hafnium, up to about 1.0 wt % niobium, up to about 0.02 wt % boron, and up to about 0.1 wt % carbon, with the remainder being nickel and incidental impurities. The alloys may be cast, directionally solidified and heat treated to provide articles having a gamma prime fraction of greater than about 50%.
    Type: Grant
    Filed: August 31, 2009
    Date of Patent: July 24, 2012
    Assignee: General Electric Company
    Inventors: Timothy Hanlon, Richard DiDomizio, Michael Francis Henry, Akane Suzuki, Arthur Samuel Peck, Stephen Joseph Balsone
  • Publication number: 20120175027
    Abstract: A method of producing a component wherein a directionally solidified columnar grained cast superalloy material is heat treated such that a secondary phase of the alloy is only partly solved, thereby providing improved transverse stress rupture strength compared to fully solved alloys.
    Type: Application
    Filed: March 22, 2012
    Publication date: July 12, 2012
    Inventors: Winfried Esser, Dirk Goldschmidt, Michael Ott, Uwe Paul, Ursula Pickert, Christopher Hanslits, Russell G. Vogt
  • Patent number: 8192564
    Abstract: A method of growing a single crystal seed bar (10) in which a mold provided with a grain selector filter (16) above a starter chamber is filled with molten metal, whereupon the metal is allowed to solidify slowly upwardly from the starter chamber. The filter (16) is provided with a pattern of openings, with the diameter of the openings being at least as large as the primary dendrite tip radius of the metal, but smaller than half the primary dendrite arm spacing.
    Type: Grant
    Filed: June 19, 2009
    Date of Patent: June 5, 2012
    Assignee: Rolls-Royce PLC
    Inventors: Neil J D'Souza, Paul A Withey, Hongbiao Dong, Huijuan Dai
  • Patent number: 7988800
    Abstract: In order to accurately and efficiently alloy a Mg-REM-Ni based hydrogen-absorbing alloy in accordance with a target composition, which was difficult in the industrial production by the conventional technique, a rare earth element starting material and a nickel starting material are firstly melted in a melting furnace to form a melt of REM-Ni alloy, and then a magnesium starting material is added to the alloy melt and an interior of the melting furnace is kept at a given pressure to form a melt of Mg-REM-Ni alloy, and thereafter the alloy melt is cooled and solidified at a given cooling rate to produce a Mg-REM-Ni based hydrogen-absorbing alloy.
    Type: Grant
    Filed: February 21, 2005
    Date of Patent: August 2, 2011
    Assignee: Japan Metals and Chemicals Co., Ltd.
    Inventors: Masahito Osawa, Katsuyuki Kudo, Akihito Maeda, Seiji Takahashi
  • Patent number: 7959748
    Abstract: Disclosed herein are a method of manufacturing a Ni-based superalloy component for a gas turbine using a one-step process of hot isostatic pressing (HIP) and heat treatment, and a component manufactured by the method. In the method, an HIP process and a heat treatment process, which have been performed to manufacture or repair a Ni-based superalloy component for a gas turbine, are performed as a one-step process using an HIP apparatus. Thus, component defects, such as micropores and microcracks, which are generated when casting, welding, or brazing the Ni-based superalloy component for a gas turbine used for a combined cycle thermal power plant or airplane, can be cured using an HIP apparatus at high temperature and high pressure and, at the same time, the physical properties of the Ni-based superalloy component can be optimized using the heat treatment process.
    Type: Grant
    Filed: October 31, 2007
    Date of Patent: June 14, 2011
    Assignee: Korea Electric Power Corporation
    Inventors: Min-Tae Kim, Sung-Yong Chang, Jong-Bum Won, Won-Young Oh
  • Publication number: 20110052409
    Abstract: A process and alloy for producing a turbine blade whose properties enable the blade to operate within a steam turbine at maximum operating temperatures of greater than 1300° F. (about 705° C.). The process includes casting the blade from a gamma prime-strengthened nickel-base superalloy having a composition of, by weight, 14.25-15.75% cobalt, 14.0-15.25% chromium, 4.0-4.6% aluminum, 3.0-3.7% titanium, 3.9-4.5% molybdenum, 0.05-0.09% carbon, 0.012-0.020% boron, maximum 0.5% iron, maximum 0.2% silicon, maximum 0.15% manganese, maximum 0.04% zirconium, maximum 0.015% sulfur, maximum 0.1% copper, balance nickel and incidental impurities, and an electron vacancy number of 2.32 maximum. The casting then undergoes a high temperature solution heat treatment to promote resistance to hold-time cracking. The blade exhibits a combination of yield strength, stress rupture properties, environmental resistance, and cost in steam turbine applications to 1400° F. (about 760° C.).
    Type: Application
    Filed: August 31, 2009
    Publication date: March 3, 2011
    Applicant: GENERAL ELECTRIC COMPANY
    Inventors: Afina Lupulescu, Robert Edward Deallenbach, Robin Carl Schwant
  • Publication number: 20110052443
    Abstract: Nickel based alloys are provided comprising from about 7.0 weight percent (wt %) to about 12.0 wt % chromium, from about 0.1 wt % to about 5 wt % molybdenum, from about 0.2 wt % to about 4.5 wt % titanium, from about 4 wt % to about 6 wt % aluminum, from about 3 wt % to about 4.9 wt % cobalt, from about 6.0 wt % to about 9.0 wt % tungsten, from about 4.0 wt % to about 6.5 wt % tantalum, from about 0.05 wt % to about 0.6 wt % hafnium, up to about 1.0 wt % niobium, up to about 0.02 wt % boron, and up to about 0.1 wt % carbon, with the remainder being nickel and incidental impurities. The alloys may be cast, directionally solidified and heat treated to provide articles having a gamma prime fraction of greater than about 50%.
    Type: Application
    Filed: August 31, 2009
    Publication date: March 3, 2011
    Applicant: GENERAL ELECTRIC COMPANY
    Inventors: Timothy Hanlon, Richard DiDomizio, Michael Francis Henry, Akane Suzuki, Arthur Samuel Peck, Stephen Joseph Balsone
  • Patent number: 7854064
    Abstract: A method for repairing a turbine engine component comprises the steps of providing a turbine engine component formed from a nickel-based superalloy, removing any defects from the turbine engine component, the removing step comprising subjecting the turbine engine component to a solutioning heat treatment using a heating rate in the range of from 29 degrees Fahrenheit/minute to approximately 40 degrees Fahrenheit/minute as the component passes through a temperature in the range of from 1100 degrees Fahrenheit to 1600 degrees Fahrenheit, and welding the turbine engine component to effect the repair. A deliberately slow post-solution treatment cooling rate is used to substantially prevent weld cracks.
    Type: Grant
    Filed: June 5, 2006
    Date of Patent: December 21, 2010
    Assignee: United Technologies Corporation
    Inventor: David R. Malley
  • Patent number: 7828915
    Abstract: A method for making Mg(magnesium)-based intermetallic compound uses a thermal process during a melting process to produce largely the Mg-based intermetallic compound. The vapor pressure of Mg is high, thereby Mg is prone to be vaporized from a melt and a wrought solid alloy in the melting process of high temperature, for purifying the wrought Mg-based intermetallic compound. The method may simplify the process and devices for making the Mg-based intermetallic compound, and produce efficiently a larger of high purity Mg-based intermetallic compound.
    Type: Grant
    Filed: December 10, 2007
    Date of Patent: November 9, 2010
    Assignee: National Central University
    Inventors: Sheng-Long Lee, Jing-Chie Lin, Che-Wei Hsu, Cheng-Yu Chou, Yin-Chun Cheng, Chia-Wang Weng, Chien-Chang Chiang, Chien-Wei Chen
  • Publication number: 20100226779
    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: Application
    Filed: March 16, 2007
    Publication date: September 9, 2010
    Inventors: Yutaka Koizumi, Hiroshi Harada, Tadaharu Yokokawa, Toshiharu Kobayashi
  • Patent number: 7782994
    Abstract: This invention relates to an inhibitor of lead-induced stress corrosion cracking including nickel boride in the secondary side of steam generator tubes in nuclear power plants and an inhibition method using the same, and more particularly, to an inhibitor of lead-induced stress corrosion cracking, in which nickel boride is added to secondary side cooling water of the steam generator in an amount of 0.2˜6 g/l, and to an inhibition method using the same. According to this invention, when the inhibitor of lead-induced stress corrosion cracking is added to the secondary side of the steam generator tube in nuclear power plants, stress corrosion cracking of the tubes, which occurs in the lead-containing neutral or caustic solution, and a crack growth rate are decreased, thus increasing elongation. Further, a stress corrosion cracking ratio is decreased, and therefore the stress corrosion cracking resistance of metal or alloy can be improved.
    Type: Grant
    Filed: March 23, 2007
    Date of Patent: August 24, 2010
    Assignees: Korea Atomic Energy Research Institute, Korea Hydro & Nuclear Power Co. Ltd.
    Inventors: Oh-Chul Kwon, Yong-Sun Yi, Hong-Pyo Kim, Joung-Soo Kim
  • Publication number: 20100135847
    Abstract: A nickel-containing alloy is disclosed. The alloy contains about 1.5 to about 4.5 weight percent aluminum; about 1.5 to about 4.5 weight percent titanium; about 0.8 to about 3 weight percent niobium; about 14 to about 28 weight percent chromium; up to about 0.2 weight percent zirconium; about 10 to about 23 weight percent cobalt; about 1 to about 3 weight percent tungsten; about 0.05 to about 0.2 weight percent carbon, about 0.002 to about 0.012 weight percent boron; and about 40 to about 70 weight percent nickel. The atomic ratio of aluminum to titanium is at least about 0.5. The alloy is also substantially free of tantalum. Related processes and articles are also disclosed.
    Type: Application
    Filed: October 21, 2009
    Publication date: June 3, 2010
    Applicant: GENERAL ELECTRIC COMPANY
    Inventors: Liang Jiang, Ji-Cheng Zhao, Ganjiang Feng
  • Publication number: 20100080729
    Abstract: A nickel-based alloy suitable for casting gas turbine components having a lower density and basic heat treating process while achieving improved strength is disclosed. Multiple embodiments of the alloy are disclosed capable of providing both directionally-solidified and equiaxed castings. Also disclosed is a method of making a cast and heat treated article utilizing the improved nickel-base alloy.
    Type: Application
    Filed: July 25, 2006
    Publication date: April 1, 2010
    Applicant: Power Systems Manufacturing, LLC
    Inventors: Charles Biondo, J. Page Strohl, Jeffery W. Samuelson, Gerhard E. Fuchs, Stanley T. Wlodek, Ramona T. Wlodek
  • Publication number: 20100034692
    Abstract: An alloy composition and method by which the incidence of freckling can be reduced in castings produced with properties similar to the René N5 nickel-base superalloy. The casting has a unidirectional crystal structure and a composition consisting of, by weight, 6% to 8% chromium, 6% to 9% cobalt, 0% to 2% molybdenum, 4% to 6% tungsten, 6.4% to 6.9% tantalum, 0% to 2% titanium, 5% to 7% aluminum, 2.7% to 3.0% rhenium, 0.3% to 0.7% haffiium, 0.04% to 0.08% carbon, 0.002% to 0.006% boron, 0% to 0.075% yttrium, 0.002% to 0.004% zirconium, the balance being nickel and incidental impurities.
    Type: Application
    Filed: August 6, 2008
    Publication date: February 11, 2010
    Applicant: General Electric Company
    Inventors: Ganjiang Feng, Shyh-Chin Huang, Jian Zheng
  • Publication number: 20100028716
    Abstract: Brazing alloy with a composition consisting essentially of FeaNiRestCrbMocCudSieBfPg, wherein 0 atomic %<=a<=50 atomic %; 5 atomic %<=b<=18 atomic %; 0.2 atomic %<c<=3 atomic %; 4 atomic %<=e<=15 atomic %; 4 atomic %<=f<=15 atomic %; 0 atomic %<=g<=6 atomic %; rest Ni, and wherein if 0 atomic %<a<=50 atomic %; then 0.5 atomic %<=d<3 atomic % and if a=0, then 0.5 atomic %<=d<=5 atomic %.
    Type: Application
    Filed: August 1, 2007
    Publication date: February 4, 2010
    Inventors: Dieter Nuetzel, Thomas Hartmann
  • Publication number: 20100012231
    Abstract: A method of growing a single crystal seed bar (10) in which a mould provided with a grain selector filter (16) above a starter chamber is filled with molten metal, whereupon the metal is allowed to solidify slowly upwardly from the starter chamber. The filter (16) is provided with a pattern of openings, with the diameter of the openings being at least as large as the primary dendrite tip radius of the metal, but smaller than half the primary dendrite arm spacing.
    Type: Application
    Filed: June 19, 2009
    Publication date: January 21, 2010
    Applicant: Rolls-Royce Plc
    Inventors: Neil J. D'Souza, Paul A. Withey, Hongbiao Dong, Huijuan Dai
  • Patent number: 7648598
    Abstract: A manufacturing method for an isothermal evaporation casting process is disclosed and to design the manufacturing method for the simple atmospheric casting. The present invention can melt the Mg—Ni alloy with the aspect of totally different melting points thereof, and the other elements can be added during melting simultaneously. Through the Mg—Ni alloy with a suitable weight ratio, the eutectic alloy of Mg/Mg2Ni and high purified ?-phase Mg2Ni can be made. Then adding other elements are to produce the composition of Mg/Ni/M. By way of the manufacturing method of the present invention, the melting equipment is simplified; and, through different manufacturing steps, the purposes of time-saving and low cost are reached; further that, a large amount of the eutectic alloy of Mg/Mg2Ni with different kinds of ratios of Mg, high purified ?-phase Mg2Ni, or the composition of Mg/Ni/M can be obtained.
    Type: Grant
    Filed: October 23, 2006
    Date of Patent: January 19, 2010
    Assignee: National Central University
    Inventors: Sheng-Long Lee, Ten-Fu Wu, Jing-Chie Lin, Che-Wei Hsu, Fu-Kai Hsu, Cheng-En Jiang
  • Publication number: 20090317288
    Abstract: A Ni-base superalloy having a chemical composition comprising Al: 4.5-7.0 wt %, Ta+Nb+Ti: 0.1-4.0 wt %, with Ta being less than 4.0 wt %, Mo: 1.0-8.0 wt %, W: 0.0-10.0 wt %, Re: 2.0-8.0 wt %, Hf: 0.0-1.0 wt %, Cr: 2.0-10.0 wt %, Co: 0.0-15.0 wt %, Ru: 0.0-5.0 wt %, and the balance being Ni and unavoidable impurities, and a method for producing the same are disclosed. The Ni-base superalloy has excellent creep property at high temperature and is suitable for use as a member at high temperature under high stress.
    Type: Application
    Filed: March 16, 2007
    Publication date: December 24, 2009
    Inventors: Tadaharu Yokokawa, Yutaka Koizumi, Hiroshi Harada, Toshiharu Kobayashi
  • Publication number: 20090130483
    Abstract: An amorphous, ductile brazing foil is produced with a composition of FeaNibCrcSidBeMofPg with 25?a?50 atomic %; 30?b?45 atomic %; 5<c?15 atomic %; 4?d?15 atomic %; 4?e?15 atomic %; 0?f?5 atomic %; 0?g?6 atomic %; and any impurities, wherein 10?d+e+g?28 atomic % with a+b+c+d+e+f+g=100. Excellent brazing joints can be produced with these brazing foils.
    Type: Application
    Filed: July 18, 2006
    Publication date: May 21, 2009
    Applicant: Vacuumschmelze GmbH & Co. KG
    Inventors: Thomas Hartmann, Dieter Nuetzel
  • Publication number: 20090129966
    Abstract: An iron-based rare-earth nanocomposite magnet according to the present invention includes an Nd2Fe14B phase and an ?-Fe phase and has a composition represented by the compositional formula: T100-x-y-z-n(B1-qCq)xRyTizMn, where T is at least one transition metal element selected from the group consisting of Fe, Co and Ni and always including Fe, R is at least one rare-earth element including substantially no La or Ce, and M is at least one metal element selected from the group consisting of Al, Si, V, Cr, Mn, Cu, Zn, Ga, Zr, Nb, Mo, Ag, Hf, Ta, W, Pt, Au and Pb, and the mole fractions x, y, z, n and q satisfy the inequalities of: 4 at %?x?10 at %, 6 at %?y?10 at %, 0.05 at %?z?5 at %, 0 at %?n?10 at %, and 0.05?q?0.5, respectively. The magnet includes 5 vol % to 60 vol % of ?-Fe phase with an average crystal grain size of 1 nm to 50 nm and 40 vol % to 90 vol % of Nd2Fe14B phase with an average crystal grain size of 5 nm to 100 nm.
    Type: Application
    Filed: March 22, 2006
    Publication date: May 21, 2009
    Applicant: Hitachi Metals, Ltd.
    Inventors: Hirokazu Kanekiyo, Toshio Miyoshi, Satoshi Hirosawa
  • Publication number: 20090110955
    Abstract: Disclosed is an amorphous, ductile brazing foil with a composition consisting essentially of NirestCraBbPcSid with 2 atomic percent ?a?30 atomic percent; 0.5 atomic percent ?b?14 atomic percent; 2 atomic percent ?c?20 atomic percent; 0 atomic percent ?d?14 atomic percent; incidental impurities ?0.5 atomic percent; rest Ni, where c>b>c/15 and 10 atomic percent ?b+c+d?25 atomic percent. Also disclosed is amorphous, ductile Ni-based brazing foil having a composition consisting essentially of NirestCraBbPcSidCeXfYg wherein a, b, c, d, e, f, and g are numbers such that 2 atomic percent ?a?30 atomic percent; 0.5 atomic percent ?b?14 atomic percent; 2 atomic percent ?c?20 atomic percent; 0 atomic percent ?d?14 atomic percent; 0 atomic percent ?e?5 atomic percent; 0 atomic percent ?f?5 atomic percent; 0 atomic percent ?g?20 atomic percent; wherein incidental impurities are present, if at all, in amounts ?0.
    Type: Application
    Filed: October 14, 2008
    Publication date: April 30, 2009
    Applicant: Vacuumschmelze GmbH & Co. KG
    Inventors: Thomas Hartmann, Dieter Nuetzel