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Single-crystal growth of the Al–Cu–Fe icosahedral quasicrystal from the ternary melt

Published online by Cambridge University Press:  31 January 2011

J. Q. Guo  and
A. P. Tsai
J. Q. Guo*
Affiliation:
National Institute for Materials Science, and Japan Science and Technology Corporation, 1-2-1 Sengen, Tsukuba, Ibaraki 305-0047, Japan
A. P. Tsai
Affiliation:
National Institute for Materials Science, and Japan Science and Technology Corporation, 1-2-1 Sengen, Tsukuba, Ibaraki 305-0047, Japan
*
a) Address all correspondence to this author. e-mail: Junqing.GUO@nims.go.jp
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Abstract

An Al–Cu–Fe partial phase diagram involving the icosahedral quasicrystal has been constructed along an Al62.5Cu37.5−xFex (x = 2.5 to 25 at.%) isopleth. The icosahedral quasicrystal forms at 850 °C via a peritectic reaction between a liquid and (Al,Cu) 13Fe4 phase and coexists with a liquid phase at temperature below the peritectic reaction. The icosahedral quasicrystal crystallizes as a primary phase in the temperature range of 760 to 850 °C from alloys surrounded by composition points of Al–Cu–Fe: 62.5–33–4.5, 62.5–34.5–3, 57.5–39.5–3 and 57.5–38.0–4.5 at.%. On the basis of the phase diagram, single grains of the Al–Cu–Fe icosahedral quasicrystal with a maximum size of 5 mm were successfully grown from Al–Cu–Fe melts.

Type
Rapid Communications
Information
Journal of Materials Research , Volume 16 , Issue 11 , November 2001 , pp. 3038 - 3041
Copyright
Copyright © Materials Research Society 2001

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