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A study of the icosahedral phase: Mg32 (Al, Zn)49

Published online by Cambridge University Press:  31 January 2011

G.V.S. Sastry  and
P. Ramachandrarao
G.V.S. Sastry
Affiliation:
Center of Advanced Study in Metallurgy, Department of Metallurgical Engineering, Institute of Technology, Banaras Hindu University, Varanasi-221005, India
P. Ramachandrarao
Affiliation:
School of Materials Science and Technology, Institute of Technology, Banaras Hindu University, Varanasi-221005, India
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Abstract

Homogeneous single phase Mg32Al19Zn30 was melt spun to form flakes suitable for TEM examination. The nodular structure gave diffraction patterns with 5.3.2 icosahedral point group symmetry. The formation of the icosahedral phase is rationalized in terms of the Mg(AlZn)49 equilibrium structure. This structure is a Frank-Kasper phase. It has previously been established how such icosahedral order can be anticipated in the Frank-Kasper phases.

Type
Articles
Information
Journal of Materials Research , Volume 1 , Issue 2 , April 1986 , pp. 247 - 250
Copyright
Copyright © Materials Research Society 1986

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