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

doi:10.1209/epl/i2005-10525-0

The transition of alpha-Ni phase morphology in highly undercooled eutectic Ni_78.6Si_21.4 alloy

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

Northwestern Polytechnical University Xian

Research output: Contribution to journal › Article › peer-review

18 Scopus citations

Abstract

High undercooling up to 550K (0.39 T_E) was achieved in eutectic Ni_78.6Si_21.4 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
Pages (from-to)	281-286
Number of pages	6
Journal	EPL
Volume	74
Issue number	2
DOIs	https://doi.org/10.1209/epl/i2005-10525-0
State	Published - 15 Apr 2006

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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.",

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AU - Lu, Yiping

AU - Yang, Gencang

AU - Liu, Feng

AU - Wang, Haipeng

AU - Zhou, Yaohe

PY - 2006/4/15

Y1 - 2006/4/15

N2 - 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.

AB - 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.

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The transition of alpha-Ni phase morphology in highly undercooled eutectic Ni_78.6Si_21.4 alloy

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