Thermally stable high-temperature nickel-base alloys

Details Thermally stable high-temperature nickel-base alloys Thermally stable high-temperature nickel-base alloys

1977-02-25

1978-10-03

Dean, R.

Specialized metallurgical processes, compositions for use therei

Processes

Free metal or alloy reductant contains magnesium

148 325, 148162, C22C 1905

Patent

active

041182235

ABSTRACT:
A thermally stable, oxidation-resistant nickel-base alloy having good engineering properties for use in mechanical equipment operated at temperatures of up to 1600.degree. F. or higher is provided by maintaining the nickel content above 50% by weight and including as essential elements from about 12 to about 18% chromium, from about 8 to about 18% molybdenum and from about 0.005 to about 0.2% lanthanum by weight. Additional elements may be included in limited amounts provided that the average N.sub.v number of the alloy as defined herein is not substantially above about 2.5 and preferably is below about 2.4.

REFERENCES:
patent: 2067569 (1937-01-01), Hessenbruch
patent: 3203792 (1965-08-01), Scheil et al.
patent: 3304176 (1967-02-01), Wlodek
patent: 4043810 (1977-08-01), Acuncius et al.

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