Grain Growth in Films with Initial 3D Microstructure
Grain growth in films with h/〈D〉0=3.5−7.5, where h is the film thickness and 〈D〉0 the initial average grain diameter, was studied by means of computer simulation. The growth kinetics during 3D®2D microstructure transformation do not obey the parabolic law commonly used for the grain growth description. By the end of the transformation, 〈D〉/h is not grater than 2. The drag effect of thermal grooves also results in 〈D〉/h < 2 to the end of the microstructure transformation.
B. Bacroix, J.H. Driver, R. Le Gall, Cl. Maurice, R. Penelle, H. Réglé and L. Tabourot
V. Y. Novikov "Grain Growth in Films with Initial 3D Microstructure", Materials Science Forum, Vols. 467-470, pp. 1087-1092, 2004