Strontium-silicon-aluminum master alloy and process therefor

Details Strontium-silicon-aluminum master alloy and process therefor Strontium-silicon-aluminum master alloy and process therefor

1975-11-24

1977-02-22

Dean, R.

Specialized metallurgical processes, compositions for use therei

Processes

Free metal or alloy reductant contains magnesium

75 68R, 75134A, 75134S, 148 32, C22C 103

Patent

active

040090264

ABSTRACT:
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.

REFERENCES:
patent: 3567429 (1971-03-01), Dunkel et al.

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