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| Number | Title | Issue Date |
| 7842143 | Hyperelastic shape setting devices and fabrication methods Shape-setting methods for fabricating devices made of single crystal shape memory alloys. The method include drawing a single crystal of a shape memory alloy from a melt of the alloy. This is followed by heating and quenching the crystal sufficiently rapid to limit ... | 11/30/2010 |
| 7754035 | Preferential hardening of single crystal blades A method for improving the strength, creep and failure resistance of a single crystal component, such as a turbine engine component, is provided. The method comprises the steps of forming a component, such as a turbine engine component, having a single crystal micro... | 07/13/2010 |
| 7632362 | Property recovering method A method is disclosed for recovering the properties of single crystal and directionally solidified Nickel based superalloys and articles made thereof, after use in a high temperature environment. The method comprises the steps of a stress relief treatment, a γ′ r... | 12/15/2009 |
| 7544257 | Single crystal shape memory alloy devices and methods Devices and methods of making devices having one or more components made of single crystal shape memory alloy capable of large recoverable distortions, defined herein as “hyperelastic” SMA. Recoverable Strains are as large as 9 percent, and in special circumstan... | 06/09/2009 |
| 7371426 | Method for repairing components using environmental bond coatings and resultant repaired components According to an embodiment of the invention, a repaired component is disclosed. The repaired component comprises an engine run component having a base metal substrate, a portion of the base metal substrate between about 1-3 mils in thickness and an overlying bond co... | 05/13/2008 |
| 7360678 | Repair and reclassification of superalloy components Novel materials and methods for repairing/reclassifying superalloy components are described herein. These materials are non-traditional blends of materials having a much higher base material content than traditional repair/reclassification materials. In embodiments ... | 04/22/2008 |
| 7270720 | Superelastic element made of a copper alloy and method for imparting a curvature of a given geometry In a method of bending a rod- or rod-like unfinished workpiece of a single crystal material of a Cu alloy the workpiece is bent at an elevated temperature so as to provide for a predetermined curvature and then the workpiece is further heated whereby the curvature i... | 09/18/2007 |
| 7189293 | Method of producing annealed wafer and annealed wafer The present invention is a method of producing an annealed wafer wherein a silicon single crystal wafer having a diameter of 200 mm or more produced by the Czochralski (CZ) method is subjected to a high temperature heat treatment in an atmosphere of an argon gas, a ... | 03/13/2007 |
| 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 |
| 7156280 | Braze alloy compositions A nickel-based high-temperature braze alloy composition includes Cr, Hf, and B. Furthermore, a cobalt-based high-temperature braze alloy composition includes Cr, Hf, and B. The braze alloys can be used, for example, as a single homogenous braze. The braze alloys can... | 01/02/2007 |
| 7141179 | Monitoring semiconductor wafer defects below one nanometer The invention describes a method to facilitate the use of low-sensitivity monitoring equipment for detecting and monitoring defects on the surface of semiconductor wafers. The method includes the use of a hydrofluoric acid solution for increasing the dimensions of a... | 11/28/2006 |
| 7115175 | Modified advanced high strength single crystal superalloy composition The present invention relates to an improved single crystal nickel base superalloy and a process for making same. The single crystal nickel base superalloy has a composition comprising 3 to 12 wt % chromium, up to 3 wt % molybdenum, 3 to 10 wt % tungsten, up to 5 wt... | 10/03/2006 |
| 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 |
| 6936116 | Nickel-based alloy for producing components solidified in single crystal form A nickel-based alloy for producing, by casting, components which have solidified in single crystal form, contains rhenium and tungsten, as well as aluminium, chromium and cobalt. The rhenium content is at least 2.3% by weight, and the weight ratio of the tungsten co... | 08/30/2005 |
| 6773667 | Hydrogen-occluding alloy and process for producing the same A hydrogen storage material which is an AB5 type hydrogen storage alloy having a CaCu5 type crystal structure represented by general formula: MmNiaMnbAlcCod wherein Mm ... | 08/10/2004 |
| 6709771 | Hybrid single crystal-powder metallurgy turbine component A hybrid component (30) having a cast single crystal superalloy portion (32) and an attached powder metallurgy material portion (34). The component may be a blade (30) of a gas turbine engine having a single crystal airfoil section and a ... | 03/23/2004 |
| 6613162 | Multicomponent homogeneous alloys and method for making same The present application discloses a method for preparing a homogeneous ternary or quaternary alloy from a quaternary melt. The method includes providing a family of phase diagrams for the quaternary melt which shows (i) composition/temperature data, (ii) ... | 09/02/2003 |
| 6503349 | Repair of single crystal nickel based superalloy article The present invention relates to a method for repairing components formed from a single crystal nickel based superalloy. The method comprises the steps of applying a repair alloy to at least one portion of a component formed from the single crystal nickel... | 01/07/2003 |
| 6444061 | PROCESS FOR PRODUCING HEAT-RESISTANT INTERMETALLIC COMPOUND NI3AL FOIL HAVING ROOM-TEMPERATURE DUCTILITY AND HEAT-RESISTANT INTERMETALLIC COMPOUND NI3AL FOIL HAVING ROOM-TEMPERATURE DUCTILITY A process for producing a heat-resistant intermetallic compound Ni3 Al foil having a room-temperature ductility, which comprises a first step of arc-melting an alloy having a chemical composition containing Ni as a main component and Al to form... | 09/03/2002 |
| 6436208 | Process for preparing aligned in-situ two phase single crystal composites of titanium-niobium alloys A process of preparing aligned, in-situ, two-phase single crystal alloys of titanium, aluminum and niobium which comprises growing the alloys at rates of about 3.0 mm. to about 6.0 mm. per hour by rotating a seed rod alloy consisting essentially of Ti-43 ... | 08/20/2002 |
| 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 |
| 6325871 | Method of bonding cast superalloys A method of bonding cast superalloys is disclosed. The method includes the steps of casting separate superalloy component parts, machining the mating surfaces of the separate parts in a controlled manner to avoid recrystallization of the material and to e... | 12/04/2001 |
| 6051083 | High strength Ni-base superalloy for directionally solidified castings In order to provide a high strength Ni-base superalloy for directionally solidified castings, which is prevented from solidification cracking at the casting, having a sufficient grain boundary strength for ensuring reliability during its operation and a s... | 04/18/2000 |
| 5976280 | Method for making a hydrogen embrittlement resistant γ' strengthened nickel base superalloy material A nickel base superalloy, having either columnar or equiaxed grain structure, which has significantly improved resistance to hydrogen embrittlement, and to fatigue in air. The material is processed so as to be essentially free of script type carbides, γ/... | 11/02/1999 |
| 5916384 | Process for the preparation of nickel base superalloys by brazing a plurality of molded cavities A process for preparing a Ni-based superalloy cast article includes (a) preparing an alloy charge composed of from 1.4 to 4.4 wt. % of Cr, from 3 to 8 wt. % of Co, from 5 to 7.5 wt. % of W, from 4.8 to 7.5 wt. % of Re, from 6 to 9 wt. % of Ta, from 4.8 to... | 06/29/1999 |
| 5904201 | Solidification of an article extension from a melt using a ceramic mold A method for forming integral extensions on the end of directionally oriented, superalloy articles, such as airfoil blading members or other components used in gas turbine or other turbine engines. An extension is formed directly on an article by dipping ... | 05/18/1999 |
| 5900084 | Damage tolerant anisotropic nickel base superalloy articles Columnar grain and single crystal nickel base superalloys are heat treated to provide a damage tolerant microstructure. The microstructure contains large, irregularly shaped "barrier" γ' particles interspersed in an ordered array of smaller cuboidal γ' ... | 05/04/1999 |
| 5882446 | Heat treatment process for material bodies made of nickel base superalloys In a heat treatment process for material bodies made of nickel base superalloys, in particular for monocrystals made of nickel base superalloys, the heat treatment of the material body comprises the following steps: annealing at 850° C. to 1100° C., hea... | 03/16/1999 |
| 5759301 | Monocrystalline nickel-base superalloy with Ti, Ta, and Hf carbides A nickel-base superalloy, in particular for the fabrication of large monocrystalline components, essentially comprises (measured in wt %): 6.0-6.8% of Cr, 8.0-10.0% of Co, 0.5-0.7% of Mo, 6.2-6.6% of W, 2.7-3.2% of Re, 5.4-5.8% of Al, 0.6-1.2% of Ti, 6.3-... | 06/02/1998 |
| 5733389 | Method of manufacturing a micro-alloy high purity aluminum conductor for use at ultra low temperature A method for manufacturing an aluminum alloy conductor for use at ultra low temperature which involves the steps of adding at least one of the metallic and semimetallic effective elements selected from the group consisting of B, Ca, Ce, Ga, Y, Yb and Th, ... | 03/31/1998 |
| 5706881 | Heat treatment of superalloy casting with partial mold removal A method of making a single crystal or columnar grain superalloy casting comprises casting a superalloy in a mold wherein at least one of the mold and optional core comprises an oxygen-bearing ceramic, directionally solidifying the superalloy to form a si... | 01/13/1998 |
| 5665180 | Method for hot rolling single crystal nickel base superalloys A heat treatment and hot working method for producing a thin sheet of nickel base superalloy single crystals is described, wherein a single crystal preform of an alloy is first heat treated in vacuum at temperatures below the γ' solvus temperature of the... | 09/09/1997 |
| 5616191 | Method for making a high purity aluminum conductor used at ultra low temperature The aluminum conductor having increase of its electric resistivity kept small at ultra low temperature of 30° K. or lower even after cyclic strain is given at ultra low temperature, by controlling the crystal structure of the high purity aluminum conduct... | 04/01/1997 |
| 5573609 | Hot isostatic pressing of single crystal superalloy articles A method for the densification of a shaped nickel base single crystal alloy article utilizing a pre-HIP, a hot isostatic pressing (HIP) step, and post-HIP solution heat treatment to enhance removal of casting porosity in a finished article.... | 11/12/1996 |
| 5551999 | Cyclic recovery heat treatment A cyclic heat treatment for eliminating the tendency of moderately deformed superalloys to recrystallize is described. The superalloys are subjected to a temperature cycle including a period at a high temperature and a period at a low temperature. The res... | 09/03/1996 |
| 5454885 | Method of purifying substrate from unwanted heavy metals A typical source of cadmium and tellurium is as a by-product of copper mining. Although attempts are made to remove impurities such as copper prior to commercially supplying them for forming material like cadmium telluride, cadmium zinc telluride and cadm... | 10/03/1995 |
| 5413648 | Preparation of single crystal superalloys for post-casting heat treatment Unwanted recrystallization during heat treatment of a directionally solidified nickel alloy single crystal casting is prevented by chemical milling the part before heat treatment. Removal of a layer of as little as 0.013-0.050 mm thick, less than two perc... | 05/09/1995 |
| 5207863 | Crystal growth method and crystalline article obtained by said method A crystal growth method for crystallizing an amorphous thin film comprises heat-treating an amorphous thin film having a region (I) with a predetermined film thickness and a region (II) with a larger film thickness than the region (I) and having a suffici... | 05/04/1993 |
| 5203932 | Fe-base austenitic steel having single crystalline austenitic phase, method for producing of same and usage of same An austenitic steel comprising Ni of 9-30%, Cr of 10-23%, and Fe of at least 45%, is characterized in comprising enough Cr and Ni to form whole austenitic structure in the equilibrium diagram at 700° C., having austenitic phase at room temperature, and t... | 04/20/1993 |
| 5154884 | Single crystal nickel-base superalloy article and method for making A nickel-base superalloy, particularly adapted for use in gas turbine engine single crystal blades and vanes is provided with a specific composition and heat treated in a particular manner to exhibit an improved balance of critical high temperature mechan... | 10/13/1992 |
