High temperature alloys

Details High temperature alloys High temperature alloys

1977-02-11

1979-02-27

Dean, R.

Specialized metallurgical processes, compositions for use therei

Processes

Free metal or alloy reductant contains magnesium

75171, 148 325, C22C 1905

Patent

active

RE0299200

ABSTRACT:
Nickel base superalloys in which critical amounts of boron are employed to enhance creep-rupture strength and ductility in the 1,300.degree. F.-1,800.degree. F. temperature range. Creep-rupture strength and ductility at temperatures around 1,800.degree. F. also is enhanced by employing amounts of carbon below a critical upper limit. These alloys are particularly useful in the form of castings as gas turbine engine components.

REFERENCES:
patent: 2975051 (1961-03-01), Wilson et al.
patent: 3061426 (1962-10-01), Bieber
patent: 3067030 (1962-12-01), Dunn et al.
patent: 3164465 (1965-01-01), Thielemann
patent: 3310399 (1967-03-01), Baldwin
patent: 3486887 (1969-12-01), Yoda et al.
F. F. Khimiushin, High Temperature Steels and Alloys, Metallurgiya, Pub. House, Moscow, (1969), FTD-HC-23-391, Parts I and II, (1971).

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