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Stoichiometric icosahedral phase in the Zn–Mg–Y system

Published online by Cambridge University Press:  31 January 2011

A. P. Tsai ,
A. Niikura ,
A. Inoue  and
T. Masumoto
A. P. Tsai
Affiliation:
National Institute for Metals, Tsukuba 305, Japan
A. Niikura
Affiliation:
Institute for Materials Research, Tohoku University, Sendai 980-77, Japan
A. Inoue
Affiliation:
Institute for Materials Research, Tohoku University, Sendai 980-77, Japan
T. Masumoto
Affiliation:
Institute for Materials Research, Tohoku University, Sendai 980-77, Japan
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Abstract

Stoichiometric composition and formation process of the icosahedral phase in the Zn–Mg–Y system have been studied. The icosahedral phase exhibit a stoichiometric composition in the vicinity of Zn60Mg30Y10. During cooling, (Zn, Mg)5Y phase primarily crystallizes from the melt at ∼960 K and then undergoes a peritectic reaction with the residual Mg-enriched melt (∼820 K) to form the icosahedral phase. The melt with a constant composition close to Mg7Zn3 is in equilibrium with the (Zn, Mg)5Y phase above the peritectic temperature in a wide compositional range.

Type
Articles
Information
Journal of Materials Research , Volume 12 , Issue 6 , June 1997 , pp. 1468 - 1471
Copyright
Copyright © Materials Research Society 1997

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References

REFERENCES

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