We investigated the solidification of two grains with a special focus on the processes at the three-phase junction of the two grains and melt by means of a 2D phase-field simulation.  The development of the local morphology is driven by both the interface energies and the growth kinetics. Thus, the choice of anisotropies in interface energy and growth kinetics is of great importance [2].
The results are discussed in the context of experiments with in-situ measurements [3,4], previous phase-field studies [5] and a recently introduced classification of grain boundaries  [6].

[1] W. Miller, A. Popescu, G. Cantù, J. Crystal Growth  http://dx.doi.org/10.1016/j.jcrysgro.2013.01.044
[2] G. Cantù, A. Popescu, W. Miller, Acta Mater. 60 (2012), 6755
[3]  K. Fujiwara, Y. Obinata, T. Ujihara, N. Usami, G. Sazaki, K. Nakajima,  J. Cryst. Growth 266 (2004), 441
[4]  Kozo Fujiwara, Int. J. Photoenergy (2012), 169829
[5]  P. Chen, Y. L. Tsai, C. W. Lan, Acta Mater. 56  (2008) 4114–4122
[6] Thierry Duffar, Amal Nadri, Scripta Mater. 62 (2010), 955

A. Popescu acknowledges the support by the project POSDRU 88/1.5/S/49516
co-financed by the European Social Fund through the Sectorial
Operational Programme for Human Resources Development 2007-2013.

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