Power plants – Motive fluid energized by externally applied heat – Process of power production or system operation
Patent
1991-06-27
1993-04-13
Dean, R.
Power plants
Motive fluid energized by externally applied heat
Process of power production or system operation
416241R, 148325, F01K 1300
Patent
active
052017915
ABSTRACT:
This invention provides alloys having optimum high and low temperature mechanical properties for use of both the high and low pressure ends of turbine rotors in a single row power generation turbine with a service temperature profile from about 75.degree.-1200.degree. F. (24.degree.-649.degree. C.). The alloys include about 8.00-9.5 wt. % Cr and about 0.85-1.05 wt. % Mo and are heat treated at 1225.degree.-1350.degree. F. (663.degree.-732.degree. C.) for at least about one hour. The alloys and the components manufactured from these alloys preferably include a room temperature 0.2% yield strength of about 80-110 ksi (551-758 MPa).
REFERENCES:
patent: 4633554 (1987-01-01), Clark et al.
patent: 4762577 (1988-08-01), Clark
P. Patriarca, "Modified 9 Cr-1 Mo Steel Technical Program and Data Package For Use In ASME Sections I and VIII Design Analyses," pp. 1, 21-48; from ORNL Technology Transfer Meeting: A New Chromium-Molybdenum Steel for Commercial Applications; Apr. 1982.
Amos Dennis R.
Clark Robert E.
Novak Robert L.
Dean R.
Phipps Margery S.
Westinghouse Electric Corp.
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