Patent application number | Description | Published |
20080290568 | REINFORCED REFRACTORY CRUCIBLES FOR MELTING TITANIUM ALLOYS - Reinforced crucibles for melting titanium alloys having a facecoat including at least one facecoat layer, a backing including at least one backing layer, and at least one reinforcing element applied to at least a portion of one or more of the facecoat layer, the backing layer, or a combination thereof where the reinforcing element includes at least one composition selected from ceramic compositions, metallic compositions, and combinations thereof. | 11-27-2008 |
20080290569 | CRUCIBLES FOR MELTING TITANIUM ALLOYS - Crucibles for melting titanium alloys having a facecoat including at least one facecoat layer containing an oxide selected from scandium oxide, yttrium oxide, hafnium oxide, a lanthanide series oxide, and combinations thereof, and a backing including at least one backing layer where the crucible has a backing to facecoat thickness ratio of from about 6.5:1 to about 20:1. | 11-27-2008 |
20080292791 | METHODS FOR MAKING REINFORCED REFRACTORY CRUCIBLES FOR MELTING TITANIUM ALLOYS - Methods for making a reinforced refractory crucible for melting titanium alloys including providing a form, applying a facecoat to the form, the facecoat having at least one facecoat layer, applying a backing about the facecoat, the backing having at least one backing layer, applying at least one reinforcing element to at least a portion of the facecoat layer, the backing layer, or a combination thereof where the reinforcing element includes at least one composition selected from ceramic compositions, metallic compositions, and combinations thereof. | 11-27-2008 |
20080292804 | METHODS FOR MAKING REFRACTORY CRUCIBLES FOR MELTING TITANIUM ALLOYS - Methods for making refractory crucibles for melting titanium alloys including providing a form, applying a facecoat to the form, and applying a backing to the facecoat where the facecoat has at least one facecoat layer including an oxide selected from the group consisting of scandium oxide, yttrium oxide, hafnium oxide, a lanthanide series oxide, and combinations thereof and where the backing to the facecoat has a thickness ratio of from about 6.5:1 to about 20:1. | 11-27-2008 |
20090000706 | METHOD OF CONTROLLING AND REFINING FINAL GRAIN SIZE IN SUPERSOLVUS HEAT TREATED NICKEL-BASE SUPERALLOYS - A method of forming a component from a gamma prime precipitation-strengthened nickel-base superalloy. The method entails formulating the superalloy to have a sufficiently high carbon content and forging the superalloy at sufficiently high local strain rates so that, following a supersolvus heat treatment, the component is characterized by a fine and substantially uniform grain size distribution, preferably finer than ASTM 7 and more preferably in a range of about ASTM 8 to 10. | 01-01-2009 |
20090032152 | METHOD FOR PRODUCING A BETA-PROCESSED ALPHA-BETA TITANIUM-ALLOY ARTICLE - A titanium-alloy article is produced by providing a workpiece of an alpha-beta titanium alloy having a beta-transus temperature, and thereafter mechanically working the workpiece at a mechanical-working temperature above the beta-transus temperature. The mechanically worked workpiece is solution heat treated at a solution-heat-treatment temperature of from about 175° F. below the beta-transus temperature to about 25° F. below the beta-transus temperature, quenched, overage heat treated at an overage-heat-treatment temperature of from about 400° F. below the beta-transus temperature to about 275° F. below the beta-transus temperature, and cooled from the overage-heat-treatment temperature. | 02-05-2009 |
20090098394 | STRAIN TOLERANT CORROSION PROTECTING COATING AND TAPE METHOD OF APPLICATION - A corrosion resistant tape coating for gas turbine engine includes a glassy ceramic matrix wherein the glassy matrix is silica-based, and includes corrosion resistant particles selected from refractory particles and non-refractory MCrAlX particles, and combinations thereof. The corrosion resistant particles are substantially uniformly distributed within the matrix, and provide the coating with corrosion resistance. Importantly the coating of the present invention has a coefficient of thermal expansion (CTE) greater than that of alumina at engine operating temperatures. The CTE of the coating is sufficiently close to the substrate material such that the coating does not spall after frequent engine cycling at temperatures above 1200° F. | 04-16-2009 |
20090133850 | SYSTEMS FOR CENTRIFUGALLY CASTING HIGHLY REACTIVE TITANIUM METALS - Systems for centrifugally casting a highly reactive titanium metal including a cold wall induction crucible for containing a titanium metal charge, the induction crucible having a plurality of induction coils and a removable bottom plate, a power source to heat the titanium metal charge in the induction crucible to obtain a molten metal, a preheated secondary crucible for catching the molten metal as it falls from the induction crucible after the removable bottom plate has been withdrawn and the power source turned off, and a centrifugal casting machine for holding and accelerating the secondary crucible to centrifugally force the molten metal into a casting mold and produce a cast component. | 05-28-2009 |
20090139074 | METHODS FOR MAKING REFRACTORY CRUCIBLES CAPABLE OF MANAGING THERMAL STRESS AND SUITABLE FOR MELTING HIGHLY REACTIVE ALLOYS - Methods for making refractory crucibles capable of managing thermal stresses and suitable for melting highly reactive alloys, the method involving providing a crucible having at least a facecoat and a backing, heating at least one retaining ring, applying the at least one retaining ring about at least a portion of the backing of the crucible; and allowing the at least one retaining ring to cool and shrink-fit about the crucible. | 06-04-2009 |
20090140473 | REFRACTORY CRUCIBLES CAPABLE OF MANAGING THERMAL STRESS AND SUITABLE FOR MELTING HIGHLY REACTIVE ALLOYS - Refractory crucibles capable of managing thermal stress and suitable for melting highly reactive alloys having a facecoat, a backing, and at least one retaining ring applied about at least a portion of the backing of the crucible, the retaining ring comprising a composition selected from the group consisting of conductive materials, non-conductive materials, and combinations thereof. | 06-04-2009 |
20090159162 | METHODS FOR IMPROVING MECHANICAL PROPERTIES OF A BETA PROCESSED TITANIUM ALLOY ARTICLE - Methods for improving mechanical properties of beta processed, alpha-beta titanium alloy articles involving forging the alloy article above the beta transus to produce a post final forged article, subjecting the post final forged article to a post-forged cooling process to produce a post-forged cooled article, solution heat treating the post-forged cooled article to a temperature below the beta transus to produce a solution heat treated article, subjecting the solution heat-treated article to a controlled post-solution cooling process to produce a post-solution cooled article, and alpha phase precipitation treating the post-solution cooled article to obtain a final article having an average elongation value of at least about 3%. | 06-25-2009 |
20110094705 | METHODS FOR CENTRIFUGALLY CASTING HIGHLY REACTIVE TITANIUM METALS - Methods for centrifugally casting a highly reactive titanium metal involving providing a cold wall induction crucible having a plurality of induction coils and a removable bottom plate, using a power source to heat a titanium metal charge in the induction crucible to obtain a molten metal, preheating a secondary crucible and placing the preheated secondary crucible into a centrifugal casting machine, positioning the centrifugal casting machine having the secondary crucible beneath the induction crucible, withdrawing the bottom plate of the induction crucible and turning off the power source to the induction crucible to allow the molten metal to fall from the induction crucible into the secondary crucible, and accelerating the secondary crucible to centrifugally force the molten metal into a casting mold to produce a cast component. | 04-28-2011 |
20130248061 | METHODS FOR PROCESSING TITANIUM ALUMINIDE INTERMETALLIC COMPOSITIONS - Methods of processing compositions containing titanium and aluminum, especially titanium aluminide intermetallic compositions (TiAl intermetallics) based on the TiAl (gamma) intermetallic compound. The methods entail processing steps that include a hot isostatic pressing (HIP) cycle and a heat treatment cycle that can be performed in a single vessel. TiAl intermetallic compositions processed in this manner preferably exhibit a duplex microstructure containing equiaxed and lamellar morphologies. | 09-26-2013 |
20130251537 | TITANIUM ALUMINIDE INTERMETALLIC COMPOSITIONS - Gamma titanium aluminide intermetallic compositions (gamma TiAl intermetallics) based on the TiAl (gamma) intermetallic compound. The gamma TiAl intermetallics contain chromium and niobium, as well as controlled amounts of carbon that achieve a desirable balance in room temperature mechanical properties and high temperature creep capabilities at temperatures approaching and possibly exceeding 1600° F. (about 870° C.). | 09-26-2013 |
20140076512 | CASTING MOLD COMPOSITION WITH IMPROVED DETECTABILITY FOR INCLUSIONS AND METHOD OF CASTING - The present disclosure relates to a titanium-containing article casting mold composition comprising calcium aluminate and an X-ray or Neutron-ray detectable element. Furthermore, present embodiments teach a method for detecting sub-surface ceramic inclusions in a titanium or titanium alloy casting by combining calcium aluminate, an element more radiographically dense than the calcium aluminate, and a liquid to form a slurry; forming a mold having the calcium aluminate and the radiographically dense element from the slurry; introducing a titanium aluminide-containing metal to the radiographically dense element-bearing mold; solidifying said titanium aluminide-containing metal to form an article in the mold; removing the solidified titanium aluminide-containing metal article from said mold; subjecting the solidified titanium aluminide-containing article to radiographic inspection to provide a radiograph; and examining said radiograph for the presence of the radiographically dense element on or in the article. | 03-20-2014 |