Before revision: Method According to John E. Gruzleski in his book Microstructure Development During Metalcasting (1996): α = (L/k*TE)*(η/v) where L is latent heat of fusion; k is Boltzmann’s constant; TE is equilibrium freezing temperature ; η is the number of nearest neighbours an atom has in the interface plane; and v is the number of nearest neighbours in the bulk solid.
After revision: Method According to John E. Gruzleski in his book Microstructure Development During Metalcasting (1996): α = (L/k*TE)*(η/v) where is the latent heat of fusion; is Boltzmann’s constant; is the number of nearest neighbours an atom has in the interface plane; and the freezing temperature at equilibrium; is is the number of nearest neighbours in the bulk solid.