Nickel-based superalloys with high temperature stability

Details Nickel-based superalloys with high temperature stability Nickel-based superalloys with high temperature stability

1996-07-30

1998-09-29

Phipps, Margery

Powder metallurgy processes

Forming articles by uniting randomly associated metal particles

Consolidation of powders

75246, 148410, 148428, 148419, 148442, 420448, 420449, 420588, B22F 100, B22F 500, B22F 504, C22C 1905

Patent

active

058157921

ABSTRACT:
A nickel-based superalloy possessing good mechanical properties when hot regarding traction, creep and cracking resistance has a chemical composition which comprises, in percentages by weight: Co 14.5 to 15.5 ; Cr 12 to 15 ; Mo 2 to 4.5 : Al 2.5 to 4; Ti 4 to 6; Hf not more than 0.5 ; C 100 to 300 ppm; B 100 to 500 ppm; Zr 200 to 700 ppm; possibly W up to 4.5; and nickel as the remainder. Components made from these alloys have an excellent microstructural stability when operating at temperatures up to 800.degree. C.

REFERENCES:
patent: 3147155 (1964-09-01), Lamb
patent: 4867812 (1989-09-01), Henry
patent: 5080734 (1992-01-01), Krueger et al.
patent: 5104614 (1992-04-01), Ducrocq et al.
patent: 5120373 (1992-06-01), Miller et al.
patent: 5129971 (1992-07-01), Henry
patent: 5143563 (1992-09-01), Krueger et al.
patent: 5482789 (1996-01-01), O'Hara et al.

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