Temperature dependence of the solid-liquid interface free energy of Ni and Al from molecular dynamics simulation of nucleation
- Ames Lab., Ames, IA (United States)
- Ames Lab., Ames, IA (United States); Iowa State Univ., Ames, IA (United States). Dept. of Physics
- Ames Lab., Ames, IA (United States); Iowa State Univ., Ames, IA (United States). Dept. of Physics; Univ. of Science and Technology of China, Hefei (China). Hefei National Lab. for Physical Sciences at the Microscale and Dept.of Physics
The temperature dependence of the solid-liquid interfacial free energy, γ, is investigated for Al and Ni at the undercooled temperature regime based on a recently developed persistent-embryo method. The atomistic description of the nucleus shape is obtained from molecular dynamics simulations. The computed γ shows a linear dependence on the temperature. The values of γ extrapolated to the melting temperature agree well with previous data obtained by the capillary fluctuation method. Here, using the temperature dependence of γ, we estimate the nucleation free energy barrier in a wide temperature range from the classical nucleation theory. The obtained data agree very well with the results from the brute-force molecular dynamics simulations.
- Research Organization:
- Ames Laboratory (AMES), Ames, IA (United States)
- Sponsoring Organization:
- USDOE
- Grant/Contract Number:
- AC02-07CH11358
- OSTI ID:
- 1483368
- Report Number(s):
- IS-J-9775
- Journal Information:
- Journal of Chemical Physics, Vol. 149, Issue 17; ISSN 0021-9606
- Publisher:
- American Institute of Physics (AIP)Copyright Statement
- Country of Publication:
- United States
- Language:
- English
Entropy and the Tolman Parameter in Nucleation Theory
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journal | July 2019 |
Effects of Dopants on the Glass Forming Ability in Al-Based Metallic Alloy
|
journal | January 2018 |
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