Low expansion superalloy

Details Low expansion superalloy Low expansion superalloy

1976-07-08

1978-01-03

Steiner, Arthur J.

Specialized metallurgical processes, compositions for use therei

Processes

Free metal or alloy reductant contains magnesium

75124, 75128B, 75128F, 75128G, 75128T, 75134F, 75171, C22C 1905, C22C 3000, C22C 3806, C22C 3848

Patent

active

040664473

ABSTRACT:
Nickel-iron and nickel-iron-cobalt alloys contain chromium and gamma-prime hardening elements in proportions balanced according to special compositional relationships providing desired thermal expansion, inflection temperature, strength and ductility characteristics, particularly including notch strength needed in machinery and structures subjected in use to varying temperatures and thermal gradients where operating temperatures become elevated above 500.degree. F.

REFERENCES:
patent: 3157995 (1964-11-01), Eiselstein
patent: 3514284 (1970-05-01), Eiselstein
patent: 3705827 (1972-12-01), Muzyka et al.
patent: 3929470 (1975-12-01), Gray
patent: 3930904 (1976-01-01), Eiselstein
patent: 3940295 (1976-02-01), Lupton et al.
patent: 3971677 (1976-07-01), Mason et al.
patent: 4006012 (1977-02-01), Kindlimann
Eiselstein, "An Age-Hardenable, Low-Expansion Alloy for Cryogenic Service," Advances in Cryogenic Engineering, (1967), pp. 508-519.

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