Hypoeutectic aluminum silicon magnesium nickel and phosphorus al

Details Hypoeutectic aluminum silicon magnesium nickel and phosphorus al Hypoeutectic aluminum silicon magnesium nickel and phosphorus al

1989-12-04

1991-06-11

Chaudhuri, Olik

Alloys or metallic compositions

Aluminum base

Silicon containing

420550, C22C 2102

Patent

active

050230514

ABSTRACT:
A hypoeutectic aluminum silicon magnesium alloy includes 4-5.5% silicon, 0.15-3.5% magnesium, 0.005 to 0.08% phosphorus and aluminum. The presence of the phosphorus causes formation of a spherical percipitates of silicon magnesium and the aluminum. The phosphorus suppresses the magnesium silicon aluminum eutectic which allows the aluminum to remain liquid for a longer period of time and consequently providing a better fill of casting during the time the alloy is solidifying in a die or a mold. This alloy which preferably includes nickel is particularly useful for marine, hydraulic and refrigeration components.

REFERENCES:
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patent: 1940922 (1933-12-01), Sterner-Rainer
patent: 2155651 (1939-04-01), Goetzel
patent: 3726666 (1973-04-01), Desre et al.
patent: 3841919 (1974-10-01), Hasegawa et al.
patent: 3953202 (1976-04-01), Rasmussen
patent: 4108646 (1978-08-01), Gennone et al.
patent: 4147074 (1979-04-01), Noguchi et al.

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