Nickel-based single crystal superalloy and method of making

Details Nickel-based single crystal superalloy and method of making Nickel-based single crystal superalloy and method of making

1989-12-29

1992-09-29

Yee, Deborah

Alloys or metallic compositions

Nickel base

Chromium containing

420443, 148428, 148404, 148675, C22C 1903

Patent

active

051512491

ABSTRACT:
A nickel-based superalloy consisting essentially of, in weight percent, from about 4 to about 5 percent chromium, from about 11 to about 14 percent cobalt, from about 4 to about 8 percent tungsten, from about 6 to about 10 percent tantalum, from about 5 to about 7 percent aluminum, from about 5.5 to about 8 percent rhenium, from about 0 to about 0.50 percent hafnium, from about 0 to about 0.07 percent carbon, from 0 to about 0.01 percent boron, from 0 to about 0.030 percent yttrium, from 0 to about 6 percent ruthenium, from 0 to about 1 percent molybdenum, from 0 to about 1 percent niobium, and the balance essentially nickel. Articles made from the superalloy of the invention are especially useful when cast as single crystal airfoils for use in advanced gas turbine engines.

REFERENCES:
patent: 4169742 (1979-10-01), Wukusick et al.
patent: 4830679 (1989-05-01), Yamagata et al.

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