Controlled expansion alloy

Details Controlled expansion alloy Controlled expansion alloy

1974-02-26

1977-02-01

Lovell, C.

Specialized metallurgical processes, compositions for use therei

Processes

Free metal or alloy reductant contains magnesium

75123K, 75134F, C22C 3000

Patent

active

040060110

ABSTRACT:
Precipitation hardenable or hardened nickel-cobalt-iron base alloy containing nickel, cobalt, iron, columbium, titanium, aluminum and boron as the only essential elements, characterized by a mean coefficient of linear expansion of about 3.times.10.sup.-.sup.6 /.degree. F to 6.times.10.sup.-.sup.6 /.degree. F from room temperature to its Curie temperature of at least about 600.degree. F to 1000.degree. F or higher. The alloy contains about 35-45% nickel, 13-18% cobalt, 2.5-7.0% columbium, 1.0-4.0% titanium, 0.1-2% aluminum, and a small but essential amount of boron.

REFERENCES:
patent: 2542962 (1951-02-01), Kinsey
patent: 2570194 (1951-10-01), Bieber et al.
patent: 3048485 (1962-08-01), Bieber
patent: 3157495 (1964-11-01), Eiselstein et al.
patent: 3420660 (1969-01-01), Kawahata et al.
patent: 3514284 (1970-05-01), Eiselstein
patent: 3575734 (1971-04-01), Muzyka et al.
patent: 3705827 (1972-12-01), Muzyka et al.

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