The formation of quasiregular microstructure in highly undercooled Ni 70.2Si29.8 eutectic alloy

Yiping Lu; Xin Lin; Gencang Yang; Junjie Li; Yaohe Zhou

doi:10.1063/1.2955723

The formation of quasiregular microstructure in highly undercooled Ni _70.2Si_29.8 eutectic alloy

Yiping Lu, Xin Lin, Gencang Yang, Junjie Li, Yaohe Zhou

School of Materials Sience and Engineering

Northwestern Polytechnical University Xian

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

16 Scopus citations

Abstract

High undercooling (about 392 K) was achieved in bulk eutectic Ni _70.2Si_29.8 alloy melt using glass fluxing combined with cyclic superheating. Surprisingly, the microstructure of eutectic Ni _70.2Si_29.8 transits from irregular to quasiregular when the undercooling exceeds 340 K. The morphology transition at large undercooling is analyzed based on the solution entropy of eutectic phases. The forming process of quasiregular microstructure is ascribed to a transition from faceted-faceted to nonfaceted-nonfaceted eutectic concurring with increased undercooling.

Original language	English
Article number	013535
Journal	Journal of Applied Physics
Volume	104
Issue number	1
DOIs	https://doi.org/10.1063/1.2955723
State	Published - 2008

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10.1063/1.2955723

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abstract = "High undercooling (about 392 K) was achieved in bulk eutectic Ni 70.2Si29.8 alloy melt using glass fluxing combined with cyclic superheating. Surprisingly, the microstructure of eutectic Ni 70.2Si29.8 transits from irregular to quasiregular when the undercooling exceeds 340 K. The morphology transition at large undercooling is analyzed based on the solution entropy of eutectic phases. The forming process of quasiregular microstructure is ascribed to a transition from faceted-faceted to nonfaceted-nonfaceted eutectic concurring with increased undercooling.",

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AU - Lu, Yiping

AU - Lin, Xin

AU - Yang, Gencang

AU - Li, Junjie

AU - Zhou, Yaohe

PY - 2008

Y1 - 2008

N2 - High undercooling (about 392 K) was achieved in bulk eutectic Ni 70.2Si29.8 alloy melt using glass fluxing combined with cyclic superheating. Surprisingly, the microstructure of eutectic Ni 70.2Si29.8 transits from irregular to quasiregular when the undercooling exceeds 340 K. The morphology transition at large undercooling is analyzed based on the solution entropy of eutectic phases. The forming process of quasiregular microstructure is ascribed to a transition from faceted-faceted to nonfaceted-nonfaceted eutectic concurring with increased undercooling.

AB - High undercooling (about 392 K) was achieved in bulk eutectic Ni 70.2Si29.8 alloy melt using glass fluxing combined with cyclic superheating. Surprisingly, the microstructure of eutectic Ni 70.2Si29.8 transits from irregular to quasiregular when the undercooling exceeds 340 K. The morphology transition at large undercooling is analyzed based on the solution entropy of eutectic phases. The forming process of quasiregular microstructure is ascribed to a transition from faceted-faceted to nonfaceted-nonfaceted eutectic concurring with increased undercooling.

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The formation of quasiregular microstructure in highly undercooled Ni 70.2Si29.8 eutectic alloy

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The formation of quasiregular microstructure in highly undercooled Ni _70.2Si_29.8 eutectic alloy