Temperature dependence of nucleation rate in a binary solid solution

Huiyuan Wang (1) , T. Philippe (2) , S. Duguay (3) , D. Blavette (1)

1 GPM - Groupe de physique des matériaux
2 PMC - Physique de la Matière Condensée
3 InESS - Institut d'Electronique du Solide et des Systèmes

The influence of regression (partial dissolution) effects on the temperature dependence of nucleation rate in a binary solid solution has been studied theoretically. The results of the analysis are compared with the predictions of the simplest Volmer–Weber theory. Regression effects are shown to have a strong influence on the shape of the curve of nucleation rate versus temperature. The temperature TM at which the maximum rate of nucleation occurs is found to be lowered, particularly for low interfacial energy (coherent precipitation) and high-mobility species (e.g. interstitial atoms).

Mots clés: Binary solid solution; Nucleation rate; Precipitation; Regression effects; Zeldovich theory

Domaines: Physique [physics]

Huiyuan Wang, T. Philippe, S. Duguay, D. Blavette. Temperature dependence of nucleation rate in a binary solid solution. Philosophical Magazine Letters, 2012, 92 (12), pp.718--725. ⟨10.1080/09500839.2012.725948⟩. ⟨hal-01928868⟩