Nickel(ni) Or Nickel Base Alloy Patents (Class 148/555)
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Patent number: 11753704Abstract: A low melt superalloy powder mixture is provided for use with additive manufacturing or welding metal components or portions thereof. The low melt superalloy powder may include by weight about 9.5% to about 10.5% chromium, about 2.9% to about 3.4% cobalt, about 8.0% to about 9.0% aluminum, about 3.8% to about 4.3% tungsten, about 0.8% to about 1.2% molybdenum, about 10% to about 20% tantalum, about 3% to about 12% hafnium, and at least 40% nickel.Type: GrantFiled: January 18, 2022Date of Patent: September 12, 2023Assignee: SIEMENS ENERGY, INC.Inventors: Kazim Ozbaysal, Ahmed Kamel
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Patent number: 11684976Abstract: The invention provides a method of manufacturing a transition piece that has a high degree of freedom in adjustment of a length, a shape, or the like, can carry out a dissimilar metal welding easily, and is easy to perform, and a transition piece. The transition piece includes one end having the same composition as one material to be welded, another end having the same composition as another material to be welded, and an intermediate layer formed between the one end and the other end. The composition of the one end and the composition of the other end become the same as approaching a center. In the method of manufacturing the transition piece according to the invention, at least the intermediate layer among the one end, the other end, and the intermediate layer is formed by a additive manufacturing method.Type: GrantFiled: July 16, 2020Date of Patent: June 27, 2023Assignee: Hitachi-GE Nuclear Energy, Ltd.Inventors: Yukari Nakayama, Sei Hirano, Yoshihisa Kiyotoki
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Patent number: 10526688Abstract: 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: GrantFiled: February 22, 2018Date of Patent: January 7, 2020Assignees: HONDA MOTOR CO., LTD., OSAKA PREFECTURE UNIVERSITY PUBLIC CORPORATIONInventors: Kazuki Nagao, Yusuke Kikuchi, Masahiro Hayashi, Takayuki Takasugi, Yasuyuki Kaneno
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Patent number: 10000834Abstract: 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: GrantFiled: November 13, 2014Date of Patent: June 19, 2018Assignees: Glassimetal Technology, Inc., Apple Inc.Inventors: Jong Hyun Na, Maximilien Launey, Danielle Duggins, Oscar Abarca, Marios D. Demetriou, William L. Johnson
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Patent number: 9285845Abstract: In some embodiments, cooling devices with metal hydrides are disclosed.Type: GrantFiled: December 27, 2012Date of Patent: March 15, 2016Assignees: Intel Corporation, University of NevadaInventors: Dhanesh Chandra, Daryl J. Nelson, Muralidhar Tirumala, Anupam Kumar, Anjali Talekar
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Publication number: 20150050181Abstract: 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: ApplicationFiled: August 12, 2014Publication date: February 19, 2015Inventors: Jong Hyun Na, Michael Floyd, Danielle Duggins, David S. Lee, Marios D. Demetriou, William L. Johnson
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Publication number: 20150047755Abstract: 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: ApplicationFiled: August 12, 2014Publication date: February 19, 2015Inventors: Jong Hyun Na, Danielle Duggins, Michael Floyd, Glenn Garrett, Maximilien Launey, Marios D. Demetriou, William L. Johnson
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Publication number: 20140345755Abstract: 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: ApplicationFiled: October 30, 2013Publication date: November 27, 2014Applicant: Glassimetal Technology, Inc.Inventors: Jong Hyun Na, Michael Floyd, Marios D. Demetriou, William L. Johnson, Glenn Garrett, Maximilien Launey
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Patent number: 8852500Abstract: 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: GrantFiled: March 16, 2007Date of Patent: October 7, 2014Assignee: National Institute for Materials ScienceInventors: Yutaka Koizumi, Hiroshi Harada, Tadaharu Yokokawa, Toshiharu Kobayashi
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Publication number: 20140283956Abstract: 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: ApplicationFiled: March 17, 2014Publication date: September 25, 2014Applicant: Glassimetal Technology, Inc.Inventors: Joseph P. Schramm, Jong Hyun Na, Marios D. Demetriou, David S. Lee, William L. Johnson
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Publication number: 20140269228Abstract: 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: ApplicationFiled: March 11, 2014Publication date: September 18, 2014Applicant: SEIKO INSTRUMENTS INC.Inventors: Miei KONISHI, Matsuo KISHI, Takashi NIWA
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Publication number: 20140202596Abstract: 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: ApplicationFiled: January 22, 2014Publication date: July 24, 2014Applicant: GLASSIMETAL TECHNOLOGY, INC.Inventors: Jong Hyun NA, Michael FLOYD, David S. LEE, Marios D. DEMETRIOU, William L. JOHNSON, Glenn GARRETT
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Publication number: 20140130945Abstract: 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: ApplicationFiled: November 15, 2013Publication date: May 15, 2014Applicant: Glassimetal Technology, Inc.Inventors: Jong Hyun Na, Michael Floyd, Marios D. Demetriou, William L. Johnson, Glenn Garrett
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Publication number: 20140116579Abstract: 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: ApplicationFiled: October 30, 2013Publication date: May 1, 2014Applicant: Glassimetal Technology, Inc.Inventors: Jong Hyun Na, Michael Floyd, Marios D. Demetriou, William L. Johnson, Glenn Garrett, Maximilien Launey
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Patent number: 8696979Abstract: 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: GrantFiled: March 16, 2007Date of Patent: April 15, 2014Assignee: National Institute for Materials ScienceInventors: Tadaharu Yokokawa, Yutaka Koizumi, Hiroshi Harada, Toshiharu Kobayashi
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Publication number: 20140096873Abstract: 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: ApplicationFiled: October 8, 2013Publication date: April 10, 2014Applicant: GLASSIMETAL TECHNOLOGY, INC.Inventors: Jong Hyun Na, Michael Floyd, Glenn Garrett, Marios D. Demetriou, William L. Johnson
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Publication number: 20140076467Abstract: 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: ApplicationFiled: September 17, 2013Publication date: March 20, 2014Applicant: Glassimetal Technology Inc.Inventors: Jong Hyun Na, Michael Floyd, Glenn Garrett, Marios D. Demetriou, William L. Johnson
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Publication number: 20140053956Abstract: 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: ApplicationFiled: August 21, 2013Publication date: February 27, 2014Applicant: ALSTOM Technology LtdInventors: Thomas ETTER, Julius SCHURB, Lukas Emanuel RICKENBACHER, Andreas KÜNZLER
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Patent number: 8597440Abstract: 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: GrantFiled: August 31, 2009Date of Patent: December 3, 2013Assignee: General Electric CompanyInventors: Afina Lupulescu, Robert Edward Deallenbach, Robin Carl Schwant
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Publication number: 20130276939Abstract: 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: ApplicationFiled: June 20, 2013Publication date: October 24, 2013Inventor: Yoshio EBISU
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Publication number: 20130263977Abstract: 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: ApplicationFiled: October 31, 2012Publication date: October 10, 2013Applicant: ALSTOM TECHNOLOGY LTDInventor: ALSTOM Technology Ltd
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Publication number: 20130213532Abstract: 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: ApplicationFiled: February 13, 2013Publication date: August 22, 2013Applicant: GS YUASA INTERNATIONAL LTD.Inventor: GS Yuasa International Ltd.
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Publication number: 20130195709Abstract: 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: ApplicationFiled: June 23, 2011Publication date: August 1, 2013Applicant: SUPERIOR METALS SWEDEN ABInventors: Sathees Ranganathan, Sohrab Solaimanzadeh-Azar, Hasse Fredriksson, Advenit Makaya
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Publication number: 20130189149Abstract: 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: ApplicationFiled: July 20, 2011Publication date: July 25, 2013Applicant: OSAKA PREFECTURE UNIVERSITY PUBLIC CORPORATIONInventors: Takayuki Takasugi, Yasuyuki Kaneno
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Publication number: 20130014862Abstract: 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: ApplicationFiled: March 25, 2011Publication date: January 17, 2013Applicant: OSAKA PREFECTURE UNIVERSITY PUBLIC CORPORATIONInventors: Takayuki Takasugi, Yasuyuki Kaneno
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Patent number: 8353444Abstract: 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: GrantFiled: October 28, 2005Date of Patent: January 15, 2013Assignee: United Technologies CorporationInventors: Norman Pietruska, Beth Kwiatkowski Abriles, John F. Falkowski
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Publication number: 20130008572Abstract: 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: ApplicationFiled: March 25, 2011Publication date: January 10, 2013Applicant: OSAKA PREFECTURE UNIVERSITY PUBLIC CORPORATIONInventors: Takayuki Takasugi, Yasuyuki Kaneno
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Publication number: 20120318413Abstract: 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: ApplicationFiled: August 16, 2012Publication date: December 20, 2012Applicants: National Institute of Advanced Science and Technology, GS Yuasa CorporationInventors: Tadashi KAKEYA, Manabu KANEMOTO, Minoru KUZUHARA, Tetsuya OZAKI, Masaharu WATADA, Tetsuo SAKAI
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Method of making hydrogen-absorbing alloy for alkaline storage battery, and alkaline storage battery
Patent number: 8317950Abstract: 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: GrantFiled: September 11, 2008Date of Patent: November 27, 2012Assignee: SANYO Electric Co., Ltd.Inventors: Yoshifumi Magari, Jun Ishida, Shigekazu Yasuoka -
Publication number: 20120273093Abstract: 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: ApplicationFiled: July 10, 2012Publication date: November 1, 2012Applicant: General Electric CompanyInventors: Timothy Hanlon, Richard Didomizio, Michael Francis Henry, Akane Suzuki, Arthur Samuel Peck, Stephen Joseph Balsone
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Patent number: 8262817Abstract: 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: GrantFiled: June 11, 2007Date of Patent: September 11, 2012Assignee: Honeywell International Inc.Inventors: Scott J. Marshall, Victor M. Reyes, Timothy R. O'Brien, Huy Tran, Andrew F. Szuromi
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Patent number: 8226886Abstract: 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: GrantFiled: August 31, 2009Date of Patent: July 24, 2012Assignee: General Electric CompanyInventors: Timothy Hanlon, Richard DiDomizio, Michael Francis Henry, Akane Suzuki, Arthur Samuel Peck, Stephen Joseph Balsone
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Publication number: 20120175027Abstract: 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: ApplicationFiled: March 22, 2012Publication date: July 12, 2012Inventors: Winfried Esser, Dirk Goldschmidt, Michael Ott, Uwe Paul, Ursula Pickert, Christopher Hanslits, Russell G. Vogt
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Patent number: 8192564Abstract: 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: GrantFiled: June 19, 2009Date of Patent: June 5, 2012Assignee: Rolls-Royce PLCInventors: Neil J D'Souza, Paul A Withey, Hongbiao Dong, Huijuan Dai
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Patent number: 7988800Abstract: 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: GrantFiled: February 21, 2005Date of Patent: August 2, 2011Assignee: Japan Metals and Chemicals Co., Ltd.Inventors: Masahito Osawa, Katsuyuki Kudo, Akihito Maeda, Seiji Takahashi
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Patent number: 7959748Abstract: 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: GrantFiled: October 31, 2007Date of Patent: June 14, 2011Assignee: Korea Electric Power CorporationInventors: Min-Tae Kim, Sung-Yong Chang, Jong-Bum Won, Won-Young Oh
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Publication number: 20110052443Abstract: 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: ApplicationFiled: August 31, 2009Publication date: March 3, 2011Applicant: GENERAL ELECTRIC COMPANYInventors: Timothy Hanlon, Richard DiDomizio, Michael Francis Henry, Akane Suzuki, Arthur Samuel Peck, Stephen Joseph Balsone
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Publication number: 20110052409Abstract: 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: ApplicationFiled: August 31, 2009Publication date: March 3, 2011Applicant: GENERAL ELECTRIC COMPANYInventors: Afina Lupulescu, Robert Edward Deallenbach, Robin Carl Schwant
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Patent number: 7854064Abstract: 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: GrantFiled: June 5, 2006Date of Patent: December 21, 2010Assignee: United Technologies CorporationInventor: David R. Malley
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Patent number: 7828915Abstract: 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: GrantFiled: December 10, 2007Date of Patent: November 9, 2010Assignee: National Central UniversityInventors: Sheng-Long Lee, Jing-Chie Lin, Che-Wei Hsu, Cheng-Yu Chou, Yin-Chun Cheng, Chia-Wang Weng, Chien-Chang Chiang, Chien-Wei Chen
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Publication number: 20100226779Abstract: 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: ApplicationFiled: March 16, 2007Publication date: September 9, 2010Inventors: Yutaka Koizumi, Hiroshi Harada, Tadaharu Yokokawa, Toshiharu Kobayashi
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Patent number: 7782994Abstract: 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: GrantFiled: March 23, 2007Date of Patent: August 24, 2010Assignees: Korea Atomic Energy Research Institute, Korea Hydro & Nuclear Power Co. Ltd.Inventors: Oh-Chul Kwon, Yong-Sun Yi, Hong-Pyo Kim, Joung-Soo Kim
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Publication number: 20100135847Abstract: 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: ApplicationFiled: October 21, 2009Publication date: June 3, 2010Applicant: GENERAL ELECTRIC COMPANYInventors: Liang Jiang, Ji-Cheng Zhao, Ganjiang Feng
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Publication number: 20100080729Abstract: 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: ApplicationFiled: July 25, 2006Publication date: April 1, 2010Applicant: Power Systems Manufacturing, LLCInventors: Charles Biondo, J. Page Strohl, Jeffery W. Samuelson, Gerhard E. Fuchs, Stanley T. Wlodek, Ramona T. Wlodek
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Publication number: 20100034692Abstract: 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: ApplicationFiled: August 6, 2008Publication date: February 11, 2010Applicant: General Electric CompanyInventors: Ganjiang Feng, Shyh-Chin Huang, Jian Zheng
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Publication number: 20100028716Abstract: 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: ApplicationFiled: August 1, 2007Publication date: February 4, 2010Inventors: Dieter Nuetzel, Thomas Hartmann
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Publication number: 20100012231Abstract: 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: ApplicationFiled: June 19, 2009Publication date: January 21, 2010Applicant: Rolls-Royce PlcInventors: Neil J. D'Souza, Paul A. Withey, Hongbiao Dong, Huijuan Dai
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Patent number: 7648598Abstract: 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: GrantFiled: October 23, 2006Date of Patent: January 19, 2010Assignee: National Central UniversityInventors: Sheng-Long Lee, Ten-Fu Wu, Jing-Chie Lin, Che-Wei Hsu, Fu-Kai Hsu, Cheng-En Jiang
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Publication number: 20090317288Abstract: 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: ApplicationFiled: March 16, 2007Publication date: December 24, 2009Inventors: Tadaharu Yokokawa, Yutaka Koizumi, Hiroshi Harada, Toshiharu Kobayashi
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Publication number: 20090130483Abstract: 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: ApplicationFiled: July 18, 2006Publication date: May 21, 2009Applicant: Vacuumschmelze GmbH & Co. KGInventors: Thomas Hartmann, Dieter Nuetzel