1
Maurice L Gell, David N Duhl: Heat treated superalloy single crystal article and process. United Technologies Corporation, Charles E Sohl, September 26, 1978: US04116723 (73 worldwide citation)

Nickel base superalloy single crystal articles formed from an alloy family and heat treated are described as is the process employed. The articles are substantially free from cobalt and the grain boundary strengtheners such as carbon, boron, and zirconium. The heat treatment process homogenizes the ...


2
David N Duhl, Walter E Olson: Heat treated superalloy single crystal article and process. United Technologies Corporation, Charles E Sohl, June 24, 1980: US04209348 (62 worldwide citation)

Nickel base superalloy single crystal articles formed of a particular compositon and heat treated are described as is the process employed. The resultant articles are substantially free from the grain boundary strengtheners such as carbon, boron, and zirconium and contain only a limited amount of co ...


3
Carl S Wukusick, Leo Buchakjian Jr: Single crystal nickel-base superalloy article and method for making. General Electric Company, Stephen S Strunk, Jerome C Squillaro, October 13, 1992: US05154884 (29 worldwide citation)

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 mechanical properties and resistance to oxidation a ...


4
David N Duhl, Alan D Cetel: Superalloy single crystal articles. United Technologies Corporation, Charles E Sohl, September 6, 1983: US04402772 (20 worldwide citation)

A specific composition range and process sequence are described for the production of single crystal superalloy articles which have an exceptional combination of high temperature mechanical properties and resistance to oxidation and hot corrosion. The nominal composition is 6% Ta, 9% Cr, 5% Co, 1% T ...


5
Wukusick Carl Stephen, Buchakjian Leo Jr: Single crystal nickel-base superalloy, article and method for making.. Gen Electric, April 13, 1983: EP0076360-A2 (17 worldwide citation)

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 mechanical properties and resistance to oxidation a ...


6
Xuan Nguyen Dinh: Phase stable single crystal materials. Allied Signal, R Steven Linne, James W McFarland, June 19, 1990: US04935072 (16 worldwide citation)

Nickel base superalloy single crystal articles, preferably aircraft gas turbine blades and vanes, and a process for preparation thereof, wherein phase stability after extended elevated temperature exposure is enhanced by controlling the content of heavy refractory elements and gamma prime phase form ...


7
Nguyen Dinh Xuan: Single crystal super alloy materials.. Garrett, November 19, 1987: EP0246082-A1 (15 worldwide citation)

Nickel base superalloy single crystal articles, preferably aircraft gas turbine blades and vanes, and a process for preparation thereof, wherein phase stability after extended elevated temperature exposure is enhanced by controlling the content of heavy refractory elements and gamma prime phase form ...


8
David N Duhl, Frederick A Schwizer: Minor element additions to single crystals for improved oxidation resistance. United Technologies Corporation, January 31, 1989: US04801513 (15 worldwide citation)

The additions of minor additions of hafnium and silicon and mixtures thereof to nickel base superalloy single crystal articles provide significantly improved oxidation resistance. The oxidation resistance is improved both for the case of uncoated articles and in the case where a protective coating s ...


9
Duhl David Noel, Schweizer Frederick Albert: Minor element additions to single crystals for improved oxidation resistance. United Technologies, March 30, 1983: GB2105748-A (15 worldwide citation)

The additions of minor amounts of hafnium and silicon and mixtures thereof to nickel base superalloy single crystal articles provide significantly improved oxidation resistance. The oxidation resistance is improved both for the case of uncoated articles and in the case where a protective coating suc ...


10
Duhl David N, Cetel Alan D: Stable heat treatable nickel superalloy single crystal articles and compositions. United Technologies, December 8, 1999: EP0962542-A1 (10 worldwide citation)

Improved compositions for fabricating nickel super-alloy single crystal articles are described. The compositions are characterized by the substantial absence of carbon, boron, zirconium and vanadium and intentional additions of cobalt. The cobalt additions increase the stability of the compositions ...