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A quasicrystalline transition state in an annealed Al65Cu20Fe15 alloy

Published online by Cambridge University Press:  31 January 2011

Z. Zhang ,
N.C. Li  and
K. Urban
Z. Zhang
Affiliation:
Institut für Festkörperforschung, Forschungszentrum Jülich GmbH, Postfach 1913, D-5170 Jülich, Germany
N.C. Li
Affiliation:
Institut für Festkörperforschung, Forschungszentrum Jülich GmbH, Postfach 1913, D-5170 Jülich, Germany
K. Urban
Affiliation:
Institut für Festkörperforschung, Forschungszentrum Jülich GmbH, Postfach 1913, D-5170 Jülich, Germany
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Abstract

A quasicrystalline transition state was found in an Al65Cu20Fe15 alloy after heat treatment at 700 °C and subsequent slow cooling of samples originally containing the icosahedral quasicrystalline phase. The transition state is characterized by the simultaneous presence of two types of quasicrystalline domains. Their structure can be obtained by the introduction of one-dimensional periodicity along one of the fivefold axes of the original icosahedral quasicrystal. The two types of domains differ in their period lengths which are obtained by multiplying a fundamental length of the icosahedral structure by the Fibonacci numbers 5 and 8.

Type
Articles
Information
Journal of Materials Research , Volume 6 , Issue 2 , February 1991 , pp. 366 - 370
Copyright
Copyright © Materials Research Society 1991

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