Abstract
High undercooling up to 550K (0.39 TE) was achieved in eutectic Ni78.6Si21.4 melt using glass fluxing combined with the cyclic superheating. According to the microstructure evolution with the initial undercooling, surprisingly, a transition from non-faceted to faceted phase occurs for the as-solidified morphology of the alpha-Ni phase at the undercooling of 390K. On the basis of the entropy of fusion criterion and the interface kinetics, this interesting morphology transition at high undercooling is analyzed.
Original language | English |
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Pages (from-to) | 281-286 |
Number of pages | 6 |
Journal | EPL |
Volume | 74 |
Issue number | 2 |
DOIs | |
State | Published - 15 Apr 2006 |