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Casting properties of the high-strength AlZnMgCuNiSi alloys

Published online by Cambridge University Press:  31 January 2011

Dalibor Vojtěch
Affiliation:
Institute of Chemical Technology, Department of Metals and Corrosion Engineering, Technická5, 166 28 Prague 6, Czech Republic
Elšad Tagiev
Affiliation:
Institute of Chemical Technology, Department of Metals and Corrosion Engineering, Technická5, 166 28 Prague 6, Czech Republic
Čstmír Barta
Affiliation:
Barta, Barta, Triska (BBT) Materials Processing, Doubická 11, 184 00 Prague 8, Czech Republic
Čestmír Barta Jr.
Affiliation:
Barta, Barta, Triska (BBT) Materials Processing, Doubická 11, 184 00 Prague 8, Czech Republic
Jan Šerák
Affiliation:
Institute of Chemical Technology, Department of Metals and Corrosion Engineering, Technická 5, 166 28 Prague 6, Czech Republic
Petr Janda
Affiliation:
Institute of Chemical Technology, Department of Metals and Corrosion Engineering, Technická 5, 166 28 Prague 6, Czech Republic
Ondřej Eckert
Affiliation:
Institute of Chemical Technology, Department of Metals and Corrosion Engineering, Technická 5, 166 28 Prague 6, Czech Republic
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Abstract

In this paper, the improvement of casting properties of the high-strength AlZnMgCu alloys is described. This improvement was achieved by additions of Ni, Mg, and Si, which formed eutectic phases, thus reducing the crystallization interval of the alloy. The comparison of the castability and hot-tearing tendency was made for three alloys: nearly single-phase AlZn6Mg2 alloy, quasi-ternary eutectic AlZn7Mg7Cu1Ni3Si3 alloy, and common casting AlSi10 alloy. It was shown that the castability and hot-tearing tendency of the quasi-ternary eutectic alloy are similar to those of the AlSi alloy.

Type
Articles
Copyright
Copyright © Materials Research Society 2003

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References

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