2021/03/01 by Р. А. Кончаков, R. A. Konchakov, A. S. Makarov +6 · 1 citation
Earth and Planetary Sciences · Materials Science · #nanoparticles nucleation surface interactions #Solidification and crystal growth phenomena #Material Dynamics and Properties
paper · doi:10.1134/s0021364021050064
Molecular dynamics simulations of aluminum demonstrate a significant increase in the vibrational entropy of formation of interstitial defects having the dumbbell configuration near the melting point Tm. Using this result and estimating the density of such defects in the melt by three independent methods, the configurational component of the entropy of the system with defects is determined. It is found that about 70% of the total entropy of melting (and, hence, of the heat of fusion) observed in experiments can be attributed to the generation of interstitial dumbbells at T = Tm.