Single crystal nickel-base superalloy for turbine components

Details Single crystal nickel-base superalloy for turbine components Single crystal nickel-base superalloy for turbine components

1986-05-07

1991-12-31

Lechert, Jr., Stephen J.

Alloys or metallic compositions

Nickel base

Chromium containing

148162, 148404, 148428, 420447, C22C 1905

Patent

active

050770047

ABSTRACT:
A single crystal nickel-base superalloy is disclosed having an improved incipient melting temperature and oxidation resistance. The single crystal nickel-base alloy of this invention is characterized by specific addition of chromium, tungsten, aluminum and tantalum to produce an alloy having moderate high temperature strength and improved oxidation resistance and incipient melting temperature. The nominal composition of our new single crystal alloy (in weight percent) is 10-15% Cr, 0-4% Co, 6-8.5% W, 6-7% Al, 0-1% Ti, 2-6% Ta, and the balance nickel.

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