Castable zinc-aluminum alloys

Details Castable zinc-aluminum alloys Castable zinc-aluminum alloys

1987-11-24

1988-12-06

Sheehan, John P.

Alloys or metallic compositions

Zinc base

Aluminum containing

164 571, 420416, 420515, 420519, 420516, C22C 1804

Patent

active

047895225

ABSTRACT:
An improved castable hypereutectic zinc-aluminum alloy which is free from underside shrinkage is described. Small additions, from about 0.25% and up to about 2 wt% of rare earth metal, preferably in the form of misch metal, to known zinc-aluminum alloys containing from about 20% and up to about 40 wt% aluminum have been found to prevent underside shrinkage in castings with a cross section up to about six inches.

REFERENCES:
patent: 4448748 (1984-05-01), Radtke et al.
patent: 4609529 (1986-09-01), Skenazi et al.
patent: 4722871 (1988-02-01), Radtke

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