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| Number | Title | Issue Date |
| 7967924 | Method for making a compositionally graded gas turbine disk A compositionally graded gas turbine disk is made by preparing a rotationally symmetric radially inner segment of a gas turbine disk preform, rotating the inner segment about a central axis, spray applying a radially outer-segment material onto the radially inner se... | 06/28/2011 |
| 7651575 | Wear resistant high temperature alloy An Fe—Ni-based alloy that has improved wear resistance at high temperature over Ni-based superalloys is provided. The alloy is particularly useful for manufacturing engine exhaust valves and other high temperature engine components subjected to corrosion, wear and... | 01/26/2010 |
| 7491275 | Nickel-base alloys and methods of heat treating nickel-base alloys Embodiments of the present invention relate to nickel-base alloys, and in particular 718-type nickel-base alloys, having a desired microstructure that is predominantly strengthened by γ′-phase precipitates and comprises an amount of at least one grain boundary pr... | 02/17/2009 |
| 7459035 | Steam turbine rotor and steam turbine plant To provide a rotor material preferable for a steam turbine of which main steam temperature is 675° C. or more, particularly exceeding 700° C., and a steam turbine plant having a rotor formed by the material, the invention provides a steam turbine plant including a... | 12/02/2008 |
| 7416618 | High strength corrosion resistant alloy for oil patch applications A Ni—Fe—Cr alloy having high strength, ductility and corrosion resistance especially for use in deep-drilled, corrosive oil and gas well environments, as well as for marine environments. The alloy comprises in weight %: 35-55% Ni, 12-25% Cr, 0.5-5% Mo, up to 3% ... | 08/26/2008 |
| 7341427 | Gas turbine nozzle segment and process therefor A gas turbine engine nozzle segment and process for producing such a nozzle segment to exhibit improved durability and aerodynamic performance. The process produces a nozzle segment having at least one vane between and interconnecting a pair of platforms. The nozzle... | 03/11/2008 |
| 7268474 | Alloy, electrode with the alloy, and ignition device with the alloy A nickel alloy has 10-20 weight percent of chromium, and 1-4 weight percent of an element selected from the group consisting of aluminum, silicium and both, and can be used in an electrode, for example in an ignition device. ... | 09/11/2007 |
| 7208116 | Nickel base superalloy 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 %... | 04/24/2007 |
| 7169241 | Ni-based superalloy having high oxidation resistance and gas turbine part A Ni-based alloy hardened with the γ′ phase, which is able to exhibit not only superior strength at high temperatures, but also excellent hot corrosion resistance and oxidation resistance at high temperatures in spite of containing no Re or reducing the amount of... | 01/30/2007 |
| 7166176 | Cast single crystal alloy component with improved low angle boundary tolerance A nickel-based single crystal gas turbine component (30) having a low angle boundary (34) with improved material properties resulting from retained gamma/gamma prime eutectic phase at the low angle boundary. The coarse eutectic phase nodules roughen th... | 01/23/2007 |
| 7166803 | Parallel-transmission flat cable equipped with connector unit A parallel-transmission flat cable that is equipped with a connector unit is provided. This parallel-transmission flat cable includes: a parallel-transmission flat cable member that has pairs of signal transmission paths and ground portions that are arranged alterna... | 01/23/2007 |
| 7160400 | Low thermal expansion Ni-base superalloy A low thermal expansion Ni-base superalloy contains, by weight % (hereinafter the same as long as not particularly defined) C: 0.15% or less; Si: 1% or less; Mn: 1% or less; Cr: 5 to 20%; at least one of Mo, W and Re of Mo+½(W+Re) of 17 (exclusive) to 25%; Al: 0.2 ... | 01/09/2007 |
| 7141209 | Method for producing oxide dispersion strengthened ferritic steel tube There is provided a method for producing oxide dispersion strengthened ferritic steel tube by fabricating a raw tube by mixed sintering of a metal powder and an oxide powder and producing a tube of the desired shape by repeating cold rolling and heat treatment for a... | 11/28/2006 |
| 7138020 | Method for reducing heat treatment residual stresses in super-solvus solutioned nickel-base superalloy articles In accordance with an embodiment of the present invention, a method for reducing residual stress in a nickel-base superalloy article comprising about 40–70% of gamma prime phase and having a gamma prime solvus temperature is disclosed. The method comprises the ste... | 11/21/2006 |
| 7074284 | Heat treatment method for bodies that comprise a nickel based superalloy In a heat treatment process for a single-crystal or directionally solidified material body comprising a nickel-based superalloy, the material body is solution-annealed and then at a first temperature γ′ particles of greater than 1 μm are precipitated in a propor... | 07/11/2006 |
| 7063752 | Grain refinement of alloys using magnetic field processing A method for refining the grain size of alloys which undergo ferromagnetic to paramagnetic phase transformation and an alloy produced therefrom. By subjecting the alloy to a timed application of a strong magnetic field, the temperature of phase boundaries can be shi... | 06/20/2006 |
| 7051961 | Fuel injector with a coating An assembly for a fuel injector having a metallic armature and a metallic poppet attached to the armature at an interface location. The armature and/or the poppet includes a coating at the interface location, where the coating has a higher resistance to corrosion as... | 05/30/2006 |
| 7014723 | Nickel-base alloy 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% chromiu... | 03/21/2006 |
| 6997994 | Ni based alloy, method for producing the same, and forging die A solution treatment is firstly performed for a non-heat-treated Ni based alloy having a composition equivalent to that of Inconel 718 (registered trademark). Subsequently, a primary aging treatment is applied by holding the Ni based alloy at 610 to 660° C. for 5 t... | 02/14/2006 |
| 6939508 | Method of manufacturing net-shaped bimetallic parts A method for manufacturing a net-shaped bimetallic part that includes the steps of: providing a tool that defines a cavity and a tooling surface; depositing a layer of an environmental metal material onto the tooling surface; filling the cavity in the tool with a po... | 09/06/2005 |
| 6924046 | Rhenium-containing protective layer for protecting a component against corrosion and oxidation at high temperatures A protective layer has the composition 0.5 to 2% of rhenium, 15 to 21% of chromium, 9 to 11.5% of aluminum, 0.05 to 0.7% of yttrium and/or at least one equivalent metal from the group consisting of scandium and the rare earths, 0 to 1% of ruthenium, remainder cobalt... | 08/02/2005 |
| 6908518 | Nickel base superalloys and turbine components fabricated therefrom A nickel base superalloy suitable for the production of a large, crack-free nickel-base superalloy gas turbine bucket suitable for use in a large land-based utility gas turbine engine, comprising, by weight percents: Chromium 7.0 t... | 06/21/2005 |
| 6905559 | Nickel-base superalloy composition and its use in single-crystal articles A composition of matter is about 1 to about 3 percent rhenium, from about 6 to about 9 percent aluminum, from 0 to about 0.5 percent titanium, from about 4 to about 6 percent tantalum, from about 12.5 to about 15 percent chromium, from about 3 to about 10 percent co... | 06/14/2005 |
| 6797232 | Nickel-based alloy for high-temperature technology Creep-proof and corrosion-resistant nickel-based alloy for the use in high-temperature technology, comprising in wt-%: 0.0015 to 0.60 carbon (C); 0.20 to 0.90 nitrogen (N); 22.0 to 32.0 chromium (Cr); 5.0 to 20.0 elements of group 4, 5, a... | 09/28/2004 |
| 6755921 | Nickel-based single crystal alloy and a method of manufacturing the same The present inventions offer a nickel-based single crystal alloy which has a high strength, is easy in conducting the solution heat treatment, hardly gives a harmful phase and is resistant to corrosion at high temperature. A nickel-based single crystal alloy is offe... | 06/29/2004 |
| 6740177 | Nickel-base alloy A castable and weldable nickel-base alloy that exhibits a desirable balance of strength and resistance to corrosion and oxidation suitable for gas turbine engine applications. A suitable composition for the alloy consists essentially of, by weight, 10% to 25% cobalt... | 05/25/2004 |
| 6720088 | Materials for protection of substrates at high temperature, articles made therefrom, and method for protecting substrates A group of alloys suitable for use in a high-temperature, oxidative environment, a protective coating system comprising a diffusion barrier that comprises an alloy selected from the group, an article comprising the diffusion barrier layer, and a method for protectin... | 04/13/2004 |
| 6696176 | Superalloy material with improved weldability A fusion weldable superalloy containing 0.005-0.5 wt. % scandium. In one embodiment, the superalloy may have a composition similar to IN-939 alloy, but having added scandium and having only 0.005-0.040 wt. % zirconium. A gas turbine component may be forme... | 02/24/2004 |
| 6632299 | Nickel-base superalloy for high temperature, high strain application A nickel-base superalloy that exhibits outstanding mechanical properties under high temperature and high strain conditions when cast in an equiaxed and/or directionally solidified, columnar grain structure, and which exhibits increased grain boundary stre... | 10/14/2003 |
| 6605164 | Nickel-based alloy having high stress rupture life A nickel-based fine grained alloy consisting essentially of 40-55 wt % Ni, 14.5-21 wt % Cr, 2.5-5.5 wt % Nb+Ta, up to 3.3 wt % Mo, 0.65-2.00 wt % Ti, 0.10-0.8 wt % Al, up to 0.35 wt % Mn, up to 0.07 wt % C, up to 0.015 wt % S, up to 0.35 wt % Si, at least... | 08/12/2003 |
| 6503345 | Nickel-molybdenum alloys High molybdenum, corrosion-resistant alloys are provided with greatly increased thermal stability by controlling the atom concentrations to be Nia Mob Xc Yd Ze, where: a is between about 73 and 77 atom per... | 01/07/2003 |
| 6409853 | Large forging manufacturing process A process for forging large components of Alloy 718 material so that the components do not exhibit abnormal grain growth includes the steps of: a) providing a billet with an average grain size between ASTM 0 and ASTM 3; b) heating the billet to a temperature of bet... | 06/25/2002 |
| 6383312 | Nickel base alloy A nickel base alloy comprising: (measured in % by weight): 11-16% Co; 12.2-15.5% Cr; 6.5-7.2% Al; 3.2-5.0% Re; 1.0-2.5% Si; 1.5-4.5% Ta; 0.2-2.0% Nb; 0.2-1.2% Hf; 0.2-1.2% Y; 0-1.5% Mg; 0-1.5% Zr; 0-0.5% La and La series elements; 0-0.15% C; 0-0.1% B; and... | 05/07/2002 |
| 6375766 | Nickel-base alloy and article manufactured thereof A nickel-base alloy containing a continuous matrix composed of a solid solution of chromium in nickel and a precipitate granularly dispersed in and coherent with the matrix and composed of an intermetallic nickel compound. The intermetallic nickel compoun... | 04/23/2002 |
| 6331217 | Turbine blades made from multiple single crystal cast superalloy segments Large gas turbine blades made from separate cast segments of superalloys are disclosed. The turbine blade is designed such that bond lines between adjacent segments are placed in low stress regions of the blade. The cast superalloy segments of the blades ... | 12/18/2001 |
| 6322643 | Columnar crystalline Ni-base heat-resistant alloy having high resistance to intergranular corrosion at high temperature, method of producing the alloy, large-size article, and method of producing large-size article from the alloy An Ni-base heat resistant alloy, has a composition which contains, by weight, Cr: from 12.0 to 14.3%, Co: from 8.5 to 11.0%, Mo: from 1.0 to 3.5%, W: from 3.5 to 6.2%, Ta: from 3.0 to 5.5%, Al: from 3.5 to 4.5%, Ti: from 2.0 to 3.2%, C: from 0.04 to 0.12%... | 11/27/2001 |
| 6287398 | High strength alloy tailored for high temperature mixed-oxidant environments A high strength nickel-base alloy consisting essentially of, by weight percent, 50 to 60 nickel, 19 to 23 chromium, 18 to 22 iron, 3 to 4.4 aluminum, 0 to 0.4 titanium, 0.05 to 0.5 carbon, 0 to 0.1 cerium, 0 to 0.3 yttrium, 0.002 to 0.4 total cerium plus ... | 09/11/2001 |
| 6284392 | Superalloys with improved weldability for high temperature applications A cast nickel-base superalloy component (10) is made having a composition containing small amounts of both boron and zirconium which are effective in combination to provide increased weldability, where such alloy is adapted for welding by weld (18) to a s... | 09/04/2001 |
| 6258317 | Advanced ultra-supercritical boiler tubing alloy An ultra supercritical boiler tubing alloy characterized by a microstructure stabilized and strengthened for 375 bar/700° C. steam, in weight percent, service and alloyed to resist coal ash/flue gas corrosion for 200,000 hours consisting of 10 to 24 coba... | 07/10/2001 |
| 6221181 | Coating composition for high temperature protection The invention relates to a coating composition for superalloy structural parts, especially for gas turbine vanes and blades, which provides simultaneously excellent environmental resistance and highly improved thermomechanical behavior. The coating consis... | 04/24/2001 |
