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Structural Relaxation in Supercooled Liquids
- Source :
- MATERIALS TRANSACTIONS. 46:2830-2837
- Publication Year :
- 2005
- Publisher :
- Japan Institute of Metals, 2005.
-
Abstract
- Relaxation behavior of structural change at the atomic cluster level in supercooled liquids during isothermal annealing processes is investigated for a model alloy system by using molecular dynamics simulations. The simulation results show that the number density of icosahedral clusters increases with the annealing time. Moreover, the number density of icosahedral clusters, the structural relaxation time, and the atomic diffusivity strongly correlate with the packing density of the supercooled liquids for many kinds of systems of alloying components with a variety of atomic size ratios and heats of mixing. This suggests that the packing density would be a good probe to estimate the stability of supercooled liquid phases and the glass-forming ability of the system.
- Subjects :
- Amorphous metal
Materials science
Number density
Mechanical Engineering
Relaxation (NMR)
Condensed Matter Physics
Thermal diffusivity
Condensed Matter::Soft Condensed Matter
Crystallography
Molecular dynamics
Atomic radius
Sphere packing
Mechanics of Materials
Chemical physics
General Materials Science
Supercooling
Subjects
Details
- ISSN :
- 13475320 and 13459678
- Volume :
- 46
- Database :
- OpenAIRE
- Journal :
- MATERIALS TRANSACTIONS
- Accession number :
- edsair.doi...........02cc396ce765bffe2dfaf8ed845fbe6d