Interface stability, growth and morphology of quasicrystals

An Pang Tsai; Ho Sou Chen; Akihisa Inoue; Tsuyoshi Masumoto

doi:10.1016/0022-3093(93)90406-N

Interface stability, growth and morphology of quasicrystals

An Pang Tsai, Ho Sou Chen, Akihisa Inoue, Tsuyoshi Masumoto

Center for Exploration of New Inorganic Materials

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

2 Citations (Scopus)

Abstract

A planar growth with growth directions parallel to a five-fold axis in icosahedral (i) and a ten-fold symmetrical axis in decagonal (D) phases is observed in a melt quenched Al₇₂Pd₂₅Cr₃ alloy as well as in stable i-AlCuFe and D-AlNiCo alloys. An interpretation is given on the basis of a stability criterion that the plane perpendicular to the five-fold axis is that of stable growth in an i-phase and the solid-liquid interface instability resulting from the fluctuation of solute concentration occurs during solidification. It leads to the formation of cellular growth along five-fold axis and finally dendritic growth along three-fold morphology.

Original language	English
Pages (from-to)	513-518
Number of pages	6
Journal	Journal of Non-Crystalline Solids
Volume	153-154
Issue number	C
DOIs	https://doi.org/10.1016/0022-3093(93)90406-N
Publication status	Published - 1993 Feb 2

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Ceramics and Composites
Condensed Matter Physics
Materials Chemistry

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title = "Interface stability, growth and morphology of quasicrystals",

abstract = "A planar growth with growth directions parallel to a five-fold axis in icosahedral (i) and a ten-fold symmetrical axis in decagonal (D) phases is observed in a melt quenched Al72Pd25Cr3 alloy as well as in stable i-AlCuFe and D-AlNiCo alloys. An interpretation is given on the basis of a stability criterion that the plane perpendicular to the five-fold axis is that of stable growth in an i-phase and the solid-liquid interface instability resulting from the fluctuation of solute concentration occurs during solidification. It leads to the formation of cellular growth along five-fold axis and finally dendritic growth along three-fold morphology.",

author = "Tsai, {An Pang} and Chen, {Ho Sou} and Akihisa Inoue and Tsuyoshi Masumoto",

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T1 - Interface stability, growth and morphology of quasicrystals

AU - Tsai, An Pang

AU - Chen, Ho Sou

AU - Inoue, Akihisa

AU - Masumoto, Tsuyoshi

PY - 1993/2/2

Y1 - 1993/2/2

N2 - A planar growth with growth directions parallel to a five-fold axis in icosahedral (i) and a ten-fold symmetrical axis in decagonal (D) phases is observed in a melt quenched Al72Pd25Cr3 alloy as well as in stable i-AlCuFe and D-AlNiCo alloys. An interpretation is given on the basis of a stability criterion that the plane perpendicular to the five-fold axis is that of stable growth in an i-phase and the solid-liquid interface instability resulting from the fluctuation of solute concentration occurs during solidification. It leads to the formation of cellular growth along five-fold axis and finally dendritic growth along three-fold morphology.

AB - A planar growth with growth directions parallel to a five-fold axis in icosahedral (i) and a ten-fold symmetrical axis in decagonal (D) phases is observed in a melt quenched Al72Pd25Cr3 alloy as well as in stable i-AlCuFe and D-AlNiCo alloys. An interpretation is given on the basis of a stability criterion that the plane perpendicular to the five-fold axis is that of stable growth in an i-phase and the solid-liquid interface instability resulting from the fluctuation of solute concentration occurs during solidification. It leads to the formation of cellular growth along five-fold axis and finally dendritic growth along three-fold morphology.

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