Grain boundary migration was studied in 2-dimensional samples in which the capillary driving force depended upon the grain boundary inclination. The grain boundary motion equation, and the solutions of this equation for samples with various initial geometries, were presented. It was shown that grain boundary velocities depended not only upon the free surface energy but also upon the second derivative of this energy with respect to the grain boundary inclination. By using a very simple expression for the free surface energy, it was shown that small grain boundary anisotropies could cause large variations in the grain boundary velocities.

C.L.Di Prinzio, B.J.G.Kriegel, O.B.Nasello: Acta Metallurgica et Materialia, 1995, 43[6], 2269-73