High HfC-containing alloys

Details High HfC-containing alloys High HfC-containing alloys

1976-03-05

1978-04-18

Dean, R.

Specialized metallurgical processes, compositions for use therei

Processes

Free metal or alloy reductant contains magnesium

75 5C, 75251, C22C 1908

Patent

active

040849643

ABSTRACT:
A new class of cobalt-based alloys and the like containing hafnium carbide (HfC) of particle size finer than about 3 microns and containing HfC in the range 2 to 15% by volume. The class has good strength characteristics at both very high and very low temperatures, it exhibits very good stability, and it has excellent oxidation characteristics even at temperatures at 2000.degree. F and above. In addition, the alloy has ductility and low-temperature toughness characteristics that make it attractive for wrought processes.

REFERENCES:
patent: 3244506 (1966-04-01), Reen
patent: 3549356 (1970-12-01), Sims et al.
patent: 3746518 (1973-07-01), Holtz

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