The effect of Ag addition on the crystallization behavior of amorphous Zr65Al7.5Cu17.5Ni10Agx (x=0,2.5,5,7.5,10) Alloys

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

Research output: Contribution to journalConference article

Abstract

The effect of Ag on the crystallization behavior of rapidly solidified amorphous Zr65Al7.5Cu17.5-xNi10 Agx (X=0,2.5,5,7.5,10) alloys has been studied by using differential scanning calorimetry, X-ray diffractometry, and transmission electron microscopy. The amorphous phase in Zr65Al7.5Cu17.5Ni10 alloy crystallizes via coprecipitation of icosahedral phase and NiZr2 phase in the first crystallization step, followed by decomposition of the quasicrystal into CuZr2 and NiZr2 phase. The NiZr2 phase transformed to stable Zr6NiAl2 phase at high temperature. The alloys containing Ag crystallizes via a two step process: Firstly, quasicrystalline phase nucleates and grows in an amorphous matrix; Secondly, the quasicrystal and remaining amorphous transformed into a stable CuZr2 and Zr6NiAl2 phases. With increasing Ag, the icosahedral phase becomes more thermally stable and the quasicrystals grain size decreased.

Original languageEnglish
Pages (from-to)101-106
Number of pages6
JournalMaterials Science Forum
Volume360-362
Publication statusPublished - 2001 May 30

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Crystallization
Quasicrystals
crystallization
heat measurement
Coprecipitation
grain size
X ray diffraction analysis
decomposition
Differential scanning calorimetry
transmission electron microscopy
scanning
matrices
Transmission electron microscopy
Decomposition
x rays
Temperature

All Science Journal Classification (ASJC) codes

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

Cite this

@article{c71282fe3c974d4791f7d07035a3c94e,
title = "The effect of Ag addition on the crystallization behavior of amorphous Zr65Al7.5Cu17.5Ni10Agx (x=0,2.5,5,7.5,10) Alloys",
abstract = "The effect of Ag on the crystallization behavior of rapidly solidified amorphous Zr65Al7.5Cu17.5-xNi10 Agx (X=0,2.5,5,7.5,10) alloys has been studied by using differential scanning calorimetry, X-ray diffractometry, and transmission electron microscopy. The amorphous phase in Zr65Al7.5Cu17.5Ni10 alloy crystallizes via coprecipitation of icosahedral phase and NiZr2 phase in the first crystallization step, followed by decomposition of the quasicrystal into CuZr2 and NiZr2 phase. The NiZr2 phase transformed to stable Zr6NiAl2 phase at high temperature. The alloys containing Ag crystallizes via a two step process: Firstly, quasicrystalline phase nucleates and grows in an amorphous matrix; Secondly, the quasicrystal and remaining amorphous transformed into a stable CuZr2 and Zr6NiAl2 phases. With increasing Ag, the icosahedral phase becomes more thermally stable and the quasicrystals grain size decreased.",
author = "Lee, {J. K.} and Kim, {W. T.} and Kim, {D. H.}",
year = "2001",
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language = "English",
volume = "360-362",
pages = "101--106",
journal = "Materials Science Forum",
issn = "0255-5476",
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The effect of Ag addition on the crystallization behavior of amorphous Zr65Al7.5Cu17.5Ni10Agx (x=0,2.5,5,7.5,10) Alloys. / Lee, J. K.; Kim, W. T.; Kim, D. H.

In: Materials Science Forum, Vol. 360-362, 30.05.2001, p. 101-106.

Research output: Contribution to journalConference article

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AU - Kim, W. T.

AU - Kim, D. H.

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Y1 - 2001/5/30

N2 - The effect of Ag on the crystallization behavior of rapidly solidified amorphous Zr65Al7.5Cu17.5-xNi10 Agx (X=0,2.5,5,7.5,10) alloys has been studied by using differential scanning calorimetry, X-ray diffractometry, and transmission electron microscopy. The amorphous phase in Zr65Al7.5Cu17.5Ni10 alloy crystallizes via coprecipitation of icosahedral phase and NiZr2 phase in the first crystallization step, followed by decomposition of the quasicrystal into CuZr2 and NiZr2 phase. The NiZr2 phase transformed to stable Zr6NiAl2 phase at high temperature. The alloys containing Ag crystallizes via a two step process: Firstly, quasicrystalline phase nucleates and grows in an amorphous matrix; Secondly, the quasicrystal and remaining amorphous transformed into a stable CuZr2 and Zr6NiAl2 phases. With increasing Ag, the icosahedral phase becomes more thermally stable and the quasicrystals grain size decreased.

AB - The effect of Ag on the crystallization behavior of rapidly solidified amorphous Zr65Al7.5Cu17.5-xNi10 Agx (X=0,2.5,5,7.5,10) alloys has been studied by using differential scanning calorimetry, X-ray diffractometry, and transmission electron microscopy. The amorphous phase in Zr65Al7.5Cu17.5Ni10 alloy crystallizes via coprecipitation of icosahedral phase and NiZr2 phase in the first crystallization step, followed by decomposition of the quasicrystal into CuZr2 and NiZr2 phase. The NiZr2 phase transformed to stable Zr6NiAl2 phase at high temperature. The alloys containing Ag crystallizes via a two step process: Firstly, quasicrystalline phase nucleates and grows in an amorphous matrix; Secondly, the quasicrystal and remaining amorphous transformed into a stable CuZr2 and Zr6NiAl2 phases. With increasing Ag, the icosahedral phase becomes more thermally stable and the quasicrystals grain size decreased.

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