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 language | English |
|---|---|
| Pages (from-to) | 101-106 |
| Number of pages | 6 |
| Journal | Materials Science Forum |
| Volume | 360-362 |
| Publication status | Published - 2001 May 30 |
| Event | Metastable, Mechanically Alloyed and Nanocrystalline Materials (ISMANAM 2000) - Oxford, United Kingdom Duration: 2000 Jul 9 → 2000 Jul 14 |
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All Science Journal Classification (ASJC) codes
- Materials Science(all)
- Condensed Matter Physics
- Mechanics of Materials
- Mechanical Engineering
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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 journal › Conference article
TY - JOUR
T1 - The effect of Ag addition on the crystallization behavior of amorphous Zr65Al7.5Cu17.5Ni10Agx (x=0,2.5,5,7.5,10) Alloys
AU - Lee, J. K.
AU - Kim, W. T.
AU - Kim, D. H.
PY - 2001/5/30
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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M3 - Conference article
AN - SCOPUS:0034998148
VL - 360-362
SP - 101
EP - 106
JO - Materials Science Forum
JF - Materials Science Forum
SN - 0255-5476
ER -