Metal treatment – Compositions – Heat treating
Patent
1977-08-15
1979-03-13
Steiner, Arthur J.
Metal treatment
Compositions
Heat treating
148 115N, 148 12R, 148 123, 148 31, 148 325, C21D 714, C22F 110, C22C 3806, C22C 3848
Patent
active
041441028
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: 3157495 (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.
Clatworthy Edward F.
Smith, Jr. Darrell F.
Wenschhof, Jr. Donald E.
Kenny Raymond J.
MacQueen Ewan C.
Steiner Arthur J.
The International Nickel Company Inc.
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