C - Chemistry – Metallurgy – 22 – C
Patent
C - Chemistry, Metallurgy
22
C
75/113, 148/3.6
C22C 19/05 (2006.01) C22F 1/10 (2006.01) C30B 11/00 (2006.01)
Patent
CA 1117320
ABSTRACT OF THE DISCLOSURE Nickel base superalloy single crystal articles formed from a particular alloy 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 cobalt. As a result of the alloy composition, the alloys have a high inci- pient melting temperature. The heat treatment process homo- genizes the microstructure, and refines the gamma prime morpho- logy. The alloy has particular utility in the fabrication of airfoils (blades and vanes) for use in gas turbine engines. In particular, the strength of articles made according to this invention makes them especially suited for use as blades in gas turbine engines.
301018
Duhl David N.
Olson Walter E.
Swabey Ogilvy Renault
United Technologies Corporation
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