Kawecki Berylco Industries, Inc.

Robert T Rasmussen

A strontium-silicon-aluminum master alloy for modifying the eutectic component of eutectic and hypo-eutectic aluminum-silicon casting alloys comprises 3 to 20 percent by weight strontium, 5 to 28 percent by weight silicon, each of said elements being present throughout the recited ranges, and the balance essentially aluminum. The master alloy is prepared by adding a strontium compound (e.g., a strontium silicide) to molten aluminum at a temperature of between about 1450.degree. and 2100.degree. F.

Strontium-silicon-aluminum master alloy and process therefor

A master composition for refining the primary silicon grains of hyper-eutectic silicon-aluminum casting alloys comprises an intimate admixture, in compact form, of pulverized ferrophosphorus and aluminum metal powder.

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Pottstown, PA, United States of America

Robert T Rasmussen