Age hardened beryllium alloy and cermets

Details Age hardened beryllium alloy and cermets Age hardened beryllium alloy and cermets

1980-09-12

1981-12-22

Skiff, Peter K.

Specialized metallurgical processes, compositions for use therei

Processes

Free metal or alloy reductant contains magnesium

75235, 75250, 75951, 148126, C22C 2500, C22C 3200

Patent

active

043069070

ABSTRACT:
Process for the formation of precipitation hardened beryllium-nickel, beryllium-iron, and beryllium-cobalt alloys and cermets for structural and bearing use respectively in precision instruments and such alloys and cermets. A beryllium-nickel, -iron, or -cobalt high solute solution at elevated temperature is rapidly cooled to provide a readily machined solid solution. After machining, the alloy is reheated to an intermediate temperature under controlled conditions where precipitation hardening occurs through limited precipitate cluster formation. A cermet is formed in the process with the addition of a ceramic material to the beryllium alloy in the initial steps.

REFERENCES:
patent: 2607676 (1952-08-01), Kurtz
patent: 3117001 (1964-01-01), Crossley
patent: 3129497 (1964-04-01), Johnston et al.
patent: 3264147 (1966-08-01), Bonfield et al.
patent: 3579390 (1971-05-01), Paine
patent: 3581231 (1971-05-01), Freiberg
Kaufmann et al., "Beryllium-Rich Alloys", The Metal Beryllium ASM, Cleveland, Ohio, 1955, pp. 555-598.
Reed-Hill, Physical Metallurgy Principles, Van Nostrand Reinhold Company, N.Y., 1964, p. 247.

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