11
Daniel P DeLuca, Bradford A Cowles, Maurice L Gell, David N Duhl, Alan D Cetel, Charles M Biondo: Nickel base superalloy single crystal articles with improved performance in air and hydrogen. United Technologies Corporation, Charles E Sohl, March 12, 2002: US06355117 (7 worldwide citation)

Compositional requirements and processing improvements are disclosed which improve the hydrogen embrittlement resistance and the fatigue resistance in air of nickel base single crystal articles. The compositional requirements enlarge the difference between the &ggr;′ solvus temperature and the incip ...


12
Venkatarama K Seetharaman, Alan D Cetel: applications, Moderate density, low density, and extremely low density single crystal alloys for high AN. United Technologies Corporation, Bachman & LaPointe P C, April 27, 2010: US07704332 (1 worldwide citation)

A single crystal alloy for high AN2 applications has a composition consisting essentially of from 4.0 to 10 wt % chromium, from 1.0 to 2.5 wt % molybdenum, up to 5.0 wt % tungsten, from 3.0 to 8.0 wt % tantalum, from 5.5 to 6.25 wt % aluminum, from 6.0 to 17 wt % cobalt, up to 0.2 wt % hafnium, from ...


13
Dilip M Shah, Alan D Cetel: Hybrid turbine blade for improved engine performance or architecture. United Technologies Corporation, Bachman & LaPointe P C, June 26, 2018: US10005125

A method is provided for casting an article such as a blade having an attachment root and an airfoil, the airfoil having a proximal end and a distal end. The method includes introducing a molten alloy into a mold. A composition of the introduced alloy is varied during the introduction so as to produ ...


14
Dilip M Shah, Alan D Cetel: Hybrid turbine blade for improved engine performance or architecture. United Technologies Corporation, Bachman & LaPointe P C, July 31, 2018: US10035185

A method is provided for casting an article such as a blade having an attachment root and an airfoil, the airfoil having a proximal end and a distal end. The method comprises introducing a molten alloy into a mold; and varying a composition of the introduced alloy during the introduction so as to pr ...


15
Steven J Bullied, Dilip M Shah, Alan D Cetel, John J Marcin: Multi-shot casting. United Technologies Corporation, Bachman & LaPointe P C, June 27, 2017: US09687910

An alloy part is cast in a mold (280) having a part forming cavity (292, 294, 296). The method comprises pouring a first alloy into the mold. The pouring causes: a surface (550) of the first alloy in the part forming cavity to raise relative to the part forming cavity; a branch flow of the poured fi ...


16
D Slade Stolz, David Ulrich Furrer, Samir V Patel, Raymond C Benn, Alan D Cetel: Turbine disk fatigue rejuvenation. United Technologies Corporation, Bachman & LaPointe P C, July 17, 2018: US10024162

A process for rejuvenating a turbine disk having a plurality of slots includes the steps of determining a depth of a damaged layer containing M23C6 carbide dissolution; and removing the damaged layer from the slots in accordance with the determined depth.


17
Alan D Cetel, Dilip M Shah: Low sulfur nickel base substrate alloy and overlay coating system. UNITED TECHNOLOGIES CORPORATION, Bachman & LaPointe P C, September 22, 2015: US09138963

A coated article having an improved coating oxidation life includes a superalloy substrate material having a composition which includes sulfur, herein the sulfur is present in an amount less than 1 ppm; and an overlay coating formed over a surface of the substrate material.


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Mario P Bochiechio, John Joseph Marcin, Alan D Cetel, Dilip M Shah, Kevin W Schlichting: Crucible for master alloying. United Technologies Corporation, Carlson Gaskey & Olds PC, December 4, 2012: US08323559

A crucible includes a composite of least two materials. The two materials are selected from a group consisting of alumina, calcia, yttria, erbia, gadolinia, magnesia, hafnia, and zirconia in a composition that has better resistance to reaction with hafnium from a molten hafnium-containing alloy than ...


19
John J Marcin Jr, Steven J Bullied, Dilip M Shah, Alan D Cetel: Castings and manufacture methods. United Technologies Corporation, Bachman & LaPointe P C, October 31, 2017: US09802248

A method for casting an article comprises a first region and a second region. The method comprises casting an alloy in a shell, the shell having a casting core protruding from a first metal piece; and deshelling and decoring to remove the shell and core and leave the first region formed by the first ...


20
Alan D Cetel, Dilip M Shah, Eric A Hudson, Raymond Surace: Thin seal for an engine. United Technologies Corporation, O Shea Getz P C, July 3, 2018: US10012099

Aspects of the disclosure are directed to a seal configured to interface with at least a first component and a second component of a gas turbine engine. A method for forming the seal includes obtaining an ingot of a fine grained, or a coarse grained, or a columnar grained or a single crystal materia ...