Alloy and process for producing ductile and compacted graphite c

Details Alloy and process for producing ductile and compacted graphite c Alloy and process for producing ductile and compacted graphite c

1982-03-29

1984-09-18

Rosenberg, Peter D.

Specialized metallurgical processes, compositions for use therei

Processes

Free metal or alloy reductant contains magnesium

75 53, 75129, 75130A, 75130AB, C22C 3308

Patent

active

044721978

ABSTRACT:
The present invention is directed to an alloy composition and the method of treating molten cast iron with such alloy to produce ductile and compacted graphite cast irons. The alloy may contain about 0.1% to about 10% silicon, about 0.05 to about 2.0% cerium and/or other rare earth elements, about 0.5 to about 4% magnesium, about 0.5 to about 6.5% carbon (percent by weight) the balance being iron.

REFERENCES:
patent: 2792300 (1957-05-01), Livngston
patent: 4147533 (1979-04-01), Flinn
Clark et al., "Influence of Magnesium Content on the Nodularizing Efficiency of Mg-FeSi Alloys", Modern Casting, 442-447 (Apr. 1964).
Guichelaar, "Equilibrium Immiscibility Relations in the Fe-Mg-Si Ternary Liquid system", Ph.D Dissert, U. of Mich. (1969).

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