Precipitation of the icosahedral phase in amorphous Zr65Cu17.5-xAl7.5Ni10Agx (x=0, 2.5, 5, 7.5 and 10) alloys

J. K. Lee, S. H. Kim, W. T. Kim, D. H. Kim

Research output: Contribution to journalArticle

22 Citations (Scopus)

Abstract

An amorphous phase in Zr65Al7.5Cu17.5Ni10 crystallizes via co-precipitation of the I-phase and NiZr2 phase in the first crystallization step, followed by decomposition of the I-phase into the CuZr2 and NiZr2 phases. The NiZr2 phase transforms to a stable Zr6NiAl2 phase at a high temperature. The alloys containing Ag crystallize via a two-step process: firstly, the I-phase nucleates homogeneously and grows in an amorphous matrix; secondly, the quasicrystal and remaining amorphous phase transforms into the stable CuZr2 and Zr6NiAl2 phases. With increasing Ag, the I-phase becomes more thermally stable and the grain size in the I-phase decreases due to increased frequency of homogeneous nucleation. The quasi-lattice constant of the I-phase decreases with increasing Ag content.

Original languageEnglish
Pages (from-to)187-190
Number of pages4
JournalMetals and Materials International
Volume7
Issue number3
Publication statusPublished - 2001 Jun 1

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Quasicrystals
grain size
nucleation
crystallization
Coprecipitation
Crystallization
decomposition
Lattice constants
Nucleation
matrices
Decomposition
Temperature

All Science Journal Classification (ASJC) codes

  • Condensed Matter Physics
  • Mechanics of Materials
  • Metals and Alloys
  • Materials Chemistry

Cite this

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title = "Precipitation of the icosahedral phase in amorphous Zr65Cu17.5-xAl7.5Ni10Agx (x=0, 2.5, 5, 7.5 and 10) alloys",
abstract = "An amorphous phase in Zr65Al7.5Cu17.5Ni10 crystallizes via co-precipitation of the I-phase and NiZr2 phase in the first crystallization step, followed by decomposition of the I-phase into the CuZr2 and NiZr2 phases. The NiZr2 phase transforms to a stable Zr6NiAl2 phase at a high temperature. The alloys containing Ag crystallize via a two-step process: firstly, the I-phase nucleates homogeneously and grows in an amorphous matrix; secondly, the quasicrystal and remaining amorphous phase transforms into the stable CuZr2 and Zr6NiAl2 phases. With increasing Ag, the I-phase becomes more thermally stable and the grain size in the I-phase decreases due to increased frequency of homogeneous nucleation. The quasi-lattice constant of the I-phase decreases with increasing Ag content.",
author = "Lee, {J. K.} and Kim, {S. H.} and Kim, {W. T.} and Kim, {D. H.}",
year = "2001",
month = "6",
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publisher = "Korean Institute of Metals and Materials",
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}

Precipitation of the icosahedral phase in amorphous Zr65Cu17.5-xAl7.5Ni10Agx (x=0, 2.5, 5, 7.5 and 10) alloys. / Lee, J. K.; Kim, S. H.; Kim, W. T.; Kim, D. H.

In: Metals and Materials International, Vol. 7, No. 3, 01.06.2001, p. 187-190.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Precipitation of the icosahedral phase in amorphous Zr65Cu17.5-xAl7.5Ni10Agx (x=0, 2.5, 5, 7.5 and 10) alloys

AU - Lee, J. K.

AU - Kim, S. H.

AU - Kim, W. T.

AU - Kim, D. H.

PY - 2001/6/1

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N2 - An amorphous phase in Zr65Al7.5Cu17.5Ni10 crystallizes via co-precipitation of the I-phase and NiZr2 phase in the first crystallization step, followed by decomposition of the I-phase into the CuZr2 and NiZr2 phases. The NiZr2 phase transforms to a stable Zr6NiAl2 phase at a high temperature. The alloys containing Ag crystallize via a two-step process: firstly, the I-phase nucleates homogeneously and grows in an amorphous matrix; secondly, the quasicrystal and remaining amorphous phase transforms into the stable CuZr2 and Zr6NiAl2 phases. With increasing Ag, the I-phase becomes more thermally stable and the grain size in the I-phase decreases due to increased frequency of homogeneous nucleation. The quasi-lattice constant of the I-phase decreases with increasing Ag content.

AB - An amorphous phase in Zr65Al7.5Cu17.5Ni10 crystallizes via co-precipitation of the I-phase and NiZr2 phase in the first crystallization step, followed by decomposition of the I-phase into the CuZr2 and NiZr2 phases. The NiZr2 phase transforms to a stable Zr6NiAl2 phase at a high temperature. The alloys containing Ag crystallize via a two-step process: firstly, the I-phase nucleates homogeneously and grows in an amorphous matrix; secondly, the quasicrystal and remaining amorphous phase transforms into the stable CuZr2 and Zr6NiAl2 phases. With increasing Ag, the I-phase becomes more thermally stable and the grain size in the I-phase decreases due to increased frequency of homogeneous nucleation. The quasi-lattice constant of the I-phase decreases with increasing Ag content.

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