Die-cast aluminum alloy products

Details Die-cast aluminum alloy products Die-cast aluminum alloy products

1976-07-08

1978-08-01

Dean, R.

Metal treatment

Compositions

Heat treating

75141, 75142, 75146, 75147, 148 3, 148159, C22C 2102

Patent

active

041040899

ABSTRACT:
Die-cast aluminum alloy products of excellent toughness and high strength are obtained from an alloy consisting essentially of 7 to 12% of Si, preferably 8 to 10% of Si, 0.2 to 0.5% of Mg, preferably 0.25 to 0.35% of Mg, 0.65 to 1.2% of Fe, preferably 0.7 to 1.0% of Fe and 0.55 to 1.0% of Mn, preferably 0.6 to 0.8% of Mn, the balance being Al and impurities. These products are produced by die-casting a molten aluminum alloy of this composition into any desired shape employing the known pore-free die-casting process with oxygen gas as the reactive gas and subjecting the cast product to solution heat treatment at a temperature ranging from 450.degree. to 530.degree. C, and then aging at a temperature ranging from 150.degree. to 230.degree. C, to thereby improve the toughness and high strength thereof.

REFERENCES:
patent: 1947121 (1934-02-01), Bonsack
patent: 3128176 (1964-04-01), Martin

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