The transition of alpha-Ni phase morphology in highly undercooled eutectic Ni78.6Si21.4 alloy

Yiping Lu, Gencang Yang, Feng Liu, Haipeng Wang, Yaohe Zhou

Research output: Contribution to journalArticlepeer-review

18 Scopus citations

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 languageEnglish
Pages (from-to)281-286
Number of pages6
JournalEPL
Volume74
Issue number2
DOIs
StatePublished - 15 Apr 2006

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