Hochfeste und hochduktile Aluminium-Legierung und Verfahren zu deren Herstellung

To provide a high-strength, high-ductility cast aluminum alloy, which enables a near-net shape product to be produced by improving the casting structure of an aluminum alloy, particularly by using specific constituents and controlling the cooling rate, and a process for producing the same. The high-...

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Bibliographic Details
Main Authors SATOU, KAZUAKI, OKOCHI, YUKIO
Format Patent
LanguageGerman
Published 09.09.1999
Edition6
Subjects
ALLOYS
CHEMISTRY
FERROUS OR NON-FERROUS ALLOYS
METALLURGY
TREATMENT OF ALLOYS OR NON-FERROUS METALS
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Summary:To provide a high-strength, high-ductility cast aluminum alloy, which enables a near-net shape product to be produced by improving the casting structure of an aluminum alloy, particularly by using specific constituents and controlling the cooling rate, and a process for producing the same. The high-strength, high-ductility cast aluminum alloy of the present invention is characterized in that it has a structure comprising fine grains of alpha -Al, having an average grain diameter of not more than 10 mu m, surrounded by a network of a compound of Al-lanthanide-base metal, the alpha -Al grains forming a domain, that the domain comprises an aggregate of alpha -Al grains which have been refined, cleaved, and ordered in a single direction, and that it has a composition represented by the general formula AlaLnbMc wherein a, b, and c are, in terms of by weight, respectively 75% </= a </= 95%, 0.5% </= b < 15%, and 0.5% </= c < 15%.
Bibliography:Application Number: DE19956008319T