Orthorhombic approximant phases and their relation to quasicrystals in mechanically alloyed Al-Cu-Fe-Si alloys

S. H. Kim; K. Chattopadhyay; K. B. Kim; W. T. Kim; D. H. Kim

doi:10.1080/09500830600860973

Orthorhombic approximant phases and their relation to quasicrystals in mechanically alloyed Al-Cu-Fe-Si alloys

S. H. Kim, K. Chattopadhyay, K. B. Kim, W. T. Kim, D. H. Kim

Department of Materials Science and Engineering

Research output: Contribution to journal › Article › peer-review

2 Citations (Scopus)

Abstract

The possibility of synthesis of quasicrystalline and associated approximant phases during mechanical alloying and subsequent heat treatment of Al 65 Cu 20 Fe 10 Si 5 alloy powders has been investigated. It is shown that, in addition to the stable ordered quasicrystal and 1/1 cubic approximant, two more phases having orthorhombic symmetry coexist. The a and c parameters of both these phases are similar to the lattice parameters of the cubic approximant, whereas their b parameters are, respectively, three and four times larger than the c parameters. It is suggested that these phases evolve on account of local symmetry breaking of the cubic approximant phase, possibly due to ordering.

Original language	English
Pages (from-to)	425-433
Number of pages	9
Journal	Philosophical Magazine Letters
Volume	86
Issue number	7
DOIs	https://doi.org/10.1080/09500830600860973
Publication status	Published - 2006 Jul 1

Bibliographical note

Funding Information:
This work is supported by Creative Research Initiatives of the Korean Ministry of Science and Technology.

All Science Journal Classification (ASJC) codes

Condensed Matter Physics

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10.1080/09500830600860973

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abstract = "The possibility of synthesis of quasicrystalline and associated approximant phases during mechanical alloying and subsequent heat treatment of Al 65 Cu 20 Fe 10 Si 5 alloy powders has been investigated. It is shown that, in addition to the stable ordered quasicrystal and 1/1 cubic approximant, two more phases having orthorhombic symmetry coexist. The a and c parameters of both these phases are similar to the lattice parameters of the cubic approximant, whereas their b parameters are, respectively, three and four times larger than the c parameters. It is suggested that these phases evolve on account of local symmetry breaking of the cubic approximant phase, possibly due to ordering.",

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AU - Kim, S. H.

AU - Chattopadhyay, K.

AU - Kim, K. B.

AU - Kim, W. T.

AU - Kim, D. H.

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N2 - The possibility of synthesis of quasicrystalline and associated approximant phases during mechanical alloying and subsequent heat treatment of Al 65 Cu 20 Fe 10 Si 5 alloy powders has been investigated. It is shown that, in addition to the stable ordered quasicrystal and 1/1 cubic approximant, two more phases having orthorhombic symmetry coexist. The a and c parameters of both these phases are similar to the lattice parameters of the cubic approximant, whereas their b parameters are, respectively, three and four times larger than the c parameters. It is suggested that these phases evolve on account of local symmetry breaking of the cubic approximant phase, possibly due to ordering.

AB - The possibility of synthesis of quasicrystalline and associated approximant phases during mechanical alloying and subsequent heat treatment of Al 65 Cu 20 Fe 10 Si 5 alloy powders has been investigated. It is shown that, in addition to the stable ordered quasicrystal and 1/1 cubic approximant, two more phases having orthorhombic symmetry coexist. The a and c parameters of both these phases are similar to the lattice parameters of the cubic approximant, whereas their b parameters are, respectively, three and four times larger than the c parameters. It is suggested that these phases evolve on account of local symmetry breaking of the cubic approximant phase, possibly due to ordering.

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Orthorhombic approximant phases and their relation to quasicrystals in mechanically alloyed Al-Cu-Fe-Si alloys

Abstract

Bibliographical note

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