Composition and methods for preparing liquid-solid alloys for ca

Details Composition and methods for preparing liquid-solid alloys for ca Composition and methods for preparing liquid-solid alloys for ca

1973-07-17

1976-04-06

Rosenberg, Peter D.

Specialized metallurgical processes, compositions for use therei

Processes

Free metal or alloy reductant contains magnesium

75 10R, 75 65R, C22C 102, C22B 406

Patent

active

039486508

ABSTRACT:
A metal composition characterized by degenerate dendritic or nodular primary discrete solid particles suspended in a secondary phase having a lower melting point than the primary particles and which secondary phase can be solid or liquid. The method involves raising the temperature of a metal alloy to a value at which the alloy is largely or completely in the molten state. The melt then is subjected to vigorous agitation and the temperature is reduced to increase the portion of the mixture in solid degenerate dendrite or nodular form up to about sixty-five percent, but usually up to about fifty percent, while continuing the agitation. At this juncture the temperature of the liquid-solid composition can be reduced to cause solidification thereof or it can be cast. The solidified composition can be stored and later it can be brought again to the liquid-solid mixture state and then recast.

REFERENCES:
patent: 2793949 (1957-05-01), Imich
patent: 3189444 (1965-06-01), Olds
patent: 3300296 (1967-01-01), Hardy
patent: 3620686 (1971-11-01), Pfann

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