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Change in local atomic structure during formation of the icosahedral quasicrystalline phase in Zr70Pd30 glassy alloy

Published online by Cambridge University Press:  31 January 2011

Muneyuki Imafuku ,
Junji Saida  and
Akihisa Inoue
Muneyuki Imafuku*
Affiliation:
Inoue Superliquid Glass Project, ERATO, Japan Science and Technology Corporation (JST), Sendai 982–0807, Japan
Junji Saida
Affiliation:
Inoue Superliquid Glass Project, ERATO, Japan Science and Technology Corporation (JST), Sendai 982–0807, Japan
Akihisa Inoue
Affiliation:
Institute for Materials Research, Tohoku University, Sendai 980–8577, Japan
*
a) Address all correspondence to this author. e-mail: crystal@re.nsc.co.jp
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Abstract

The local atomic structures in glassy, supercooled liquid and quasicrystalline phases for a Zr70Pd30 binary alloy have been examined by the x-ray diffraction method. It was found that the local atomic structure in the glassy phase can be identified as the distorted icosahedral-like structure around Zr and remains almost unchanged by the phase transformation into the supercooled liquid. In the formation process of the icosahedral phase, approximately one Zr atom substitutes with one Pd atom in this local structure. This kind of atomic rearrangement may improve the perfectibility of the as-quenched icosahedral-like cluster, leading to the phase evolution of the icosahedral phase.

Type
Rapid Communications
Information
Journal of Materials Research , Volume 16 , Issue 11 , November 2001 , pp. 3046 - 3049
Copyright
Copyright © Materials Research Society 2001

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