Abstract
In order to investigate the effects of quasicrystalline phase on the mechanical relaxation behavior of a metallic glass, dynamic mechanical properties of as-spun and heat treated Ti45Zr16Ni9Cu10Be20 ribbons were measured. From the temperature dependence of the shift factor, obtained by the master curve of tan δ, the activation energies for sub-Tg and α-relaxation of both ribbons were calculated and their relaxation mechanisms were investigated. The activation energy for sub-Tg relaxation of heat treated ribbon which contains the quasicrystalline phase in the amorphous matrix showed higher value than that of the as-spun amorphous ribbon, while the activation energy for α-relaxation of both ribbons showed similar value. The activation energy for the sub-Tg relaxation of the heat treated ribbon was even higher than that for the α-relaxation of it. The high value of the activation energy for the sub-Tg relaxation of a heat treated ribbon can be said to be ascribed to the highly cooperative motions associated with the phason-type atomic rearrangement of the quasicrystalline phase embedded in the amorphous matrix of the heat treated Ti45Zr16Ni9Cu10Be20 ribbon.
| Original language | English |
|---|---|
| Pages (from-to) | 1-6 |
| Number of pages | 6 |
| Journal | Materials Science and Engineering A |
| Volume | 527 |
| Issue number | 1-2 |
| DOIs | |
| Publication status | Published - 2009 Dec 15 |
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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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Quasicrystalline effects on the mechanical relaxation behavior of a Ti45Zr16Ni9Cu10Be20 metallic glass. / Jeong, H. T.; Park, J. M.; Kim, W. T.; Kim, D. H.
In: Materials Science and Engineering A, Vol. 527, No. 1-2, 15.12.2009, p. 1-6.Research output: Contribution to journal › Article
TY - JOUR
T1 - Quasicrystalline effects on the mechanical relaxation behavior of a Ti45Zr16Ni9Cu10Be20 metallic glass
AU - Jeong, H. T.
AU - Park, J. M.
AU - Kim, W. T.
AU - Kim, D. H.
PY - 2009/12/15
Y1 - 2009/12/15
N2 - In order to investigate the effects of quasicrystalline phase on the mechanical relaxation behavior of a metallic glass, dynamic mechanical properties of as-spun and heat treated Ti45Zr16Ni9Cu10Be20 ribbons were measured. From the temperature dependence of the shift factor, obtained by the master curve of tan δ, the activation energies for sub-Tg and α-relaxation of both ribbons were calculated and their relaxation mechanisms were investigated. The activation energy for sub-Tg relaxation of heat treated ribbon which contains the quasicrystalline phase in the amorphous matrix showed higher value than that of the as-spun amorphous ribbon, while the activation energy for α-relaxation of both ribbons showed similar value. The activation energy for the sub-Tg relaxation of the heat treated ribbon was even higher than that for the α-relaxation of it. The high value of the activation energy for the sub-Tg relaxation of a heat treated ribbon can be said to be ascribed to the highly cooperative motions associated with the phason-type atomic rearrangement of the quasicrystalline phase embedded in the amorphous matrix of the heat treated Ti45Zr16Ni9Cu10Be20 ribbon.
AB - In order to investigate the effects of quasicrystalline phase on the mechanical relaxation behavior of a metallic glass, dynamic mechanical properties of as-spun and heat treated Ti45Zr16Ni9Cu10Be20 ribbons were measured. From the temperature dependence of the shift factor, obtained by the master curve of tan δ, the activation energies for sub-Tg and α-relaxation of both ribbons were calculated and their relaxation mechanisms were investigated. The activation energy for sub-Tg relaxation of heat treated ribbon which contains the quasicrystalline phase in the amorphous matrix showed higher value than that of the as-spun amorphous ribbon, while the activation energy for α-relaxation of both ribbons showed similar value. The activation energy for the sub-Tg relaxation of the heat treated ribbon was even higher than that for the α-relaxation of it. The high value of the activation energy for the sub-Tg relaxation of a heat treated ribbon can be said to be ascribed to the highly cooperative motions associated with the phason-type atomic rearrangement of the quasicrystalline phase embedded in the amorphous matrix of the heat treated Ti45Zr16Ni9Cu10Be20 ribbon.
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U2 - 10.1016/j.msea.2009.08.043
DO - 10.1016/j.msea.2009.08.043
M3 - Article
AN - SCOPUS:71749084866
VL - 527
SP - 1
EP - 6
JO - Materials Science & Engineering A: Structural Materials: Properties, Microstructure and Processing
JF - Materials Science & Engineering A: Structural Materials: Properties, Microstructure and Processing
SN - 0921-5093
IS - 1-2
ER -