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Philosophical Magazine B Volume 60, 1989 - Issue 5
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Original Articles

On the transition-metal quasisublattice in icosahedral Al-Cr-Fe phases

R. Manaila Institute of Physics and Technology of Materials, Bucharest, Magurele, P.O.B. MG 7, Romania
,
V. Florescu Institute of Physics and Technology of Materials, Bucharest, Magurele, P.O.B. MG 7, Romania
,
A. Jianu Institute of Physics and Technology of Materials, Bucharest, Magurele, P.O.B. MG 7, Romania
&
O. Radulescu Institute of Physics and Technology of Materials, Bucharest, Magurele, P.O.B. MG 7, Romania
Pages 589-599 | Received 06 Jan 1989, Accepted 03 Apr 1989, Published online: 20 Aug 2006
 
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Abstract

The formation of the icosahedral quasicrystalline phase in the Al-Cr-Fe system has been investigated by X-ray diffraction as a function of the CrxFe1–x, composition of the transition-metal (TM) quasisublattice. An optimal range was found around x = 0·6, where the icosahedral phase shows the highest degree of structural order. An analogy is proposed with the formation of the crystalline phase in the Cr-Fe alloy system, thus underlining the importance of the composition in the TM quasisublattice.

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