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Abstract

The growing and melting of crystal nuclei in liquid Cu are investigated by molecular dynamics simulation. The critical undercooling is proportional to the reciprocle of the nanoparticle radius. The Gibbs-Thomson coefficient of Cu is 1.12× 10-7 K·m. Then the crystal-melt interfacial free energy of Cu is 0.146 J/m2 estimated from the Gibbs-Thomson coefficient, and the Turnbull coefficient of Cu is 0.416. All the values by simulation are consistent with the experimental results of Turnbull.

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1.
Funds:Project supported by the National Natural Science Foundation of China (Grant Nos. 50971102 and 50901061), the National Basic Research Program of China (Grant No. 2011CB610402), the Programme of Introducing Talents of Discipline to Universities (Grant No. 08040), and the fund of the State Key Laboratory of Solidification Processing in NWPU (Grant No. 02-TZ-2008).

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Vol. 62, Issue 5 - 2013-03-05

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