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, Do Hyang Kim

Research output: Contribution to journalArticle

1 Citation (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 languageEnglish
Pages (from-to)425-433
Number of pages9
JournalPhilosophical Magazine Letters
Volume86
Issue number7
DOIs
Publication statusPublished - 2006 Jul 1

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alloying
lattice parameters
broken symmetry
heat treatment
symmetry
synthesis

All Science Journal Classification (ASJC) codes

  • Condensed Matter Physics

Cite this

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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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Orthorhombic approximant phases and their relation to quasicrystals in mechanically alloyed Al-Cu-Fe-Si alloys. / Kim, S. H.; Chattopadhyay, K.; Kim, K. B.; Kim, W. T.; Kim, Do Hyang.

In: Philosophical Magazine Letters, Vol. 86, No. 7, 01.07.2006, p. 425-433.

Research output: Contribution to journalArticle

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AU - Kim, S. H.

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AU - Kim, Do Hyang

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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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