The superheated Melting of Grain Boundary

Details The superheated Melting of Grain Boundary The superheated Melting of Grain Boundary

2005-06-08

arxiv.org/abs/cond-mat/0506192v1

PHYS. REV. B 72, 064121(2005)

Physics

Condensed Matter

Materials Science

Accepted by PRB, 7 pages and 5 figures

Scientific paper

10.1103/PhysRevB.72.064121

Based on a model of the melting of Grain Boundary (GB), we discuss the possibility of the existence of superheated GB state. A Molecular Dynamics simulation presented here shows that the superheated GB state can realized in the high symmetric tilt GB. Whether the sizes of liquid nuclei exceed a critical size determined the superheating grain boundary melting or not. Our results also indicate that the increase of melting point due to pressure is smaller than the superheating due to nucleation mechanism.

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