High strength hot corrosion resistant single crystals containing

Details High strength hot corrosion resistant single crystals containing High strength hot corrosion resistant single crystals containing

1984-02-10

1986-07-01

Dean, R.

Metal treatment

Stock

Directionally solidified

148410, 148428, C22C 1905

Patent

active

045978093

ABSTRACT:
Corrosion resistant, high strength, superalloy single crystal articles are described. Starting with a nominal composition of 11.75% Cr, 9% Co, 1.75% Mo, 4.5% W, 2.5% Ta, 2.5% Al, 4% Ti, balance essentially nickel, intentional additions are made of carbon and extra tantalum. From 0.05-0.15% carbon is added along with sufficient tantalum to combine with the carbon to form tantalum carbon. The resultant articles have substantially improved hot corrosion resistance and creep properties.

REFERENCES:
patent: 3799769 (1974-03-01), Tarshis et al.

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