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

  • Northwestern Polytechnical University Xian

科研成果: 期刊稿件文章同行评审

16 引用 (Scopus)

摘要

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.

源语言英语
文章编号013535
期刊Journal of Applied Physics
104
1
DOI
出版状态已出版 - 2008

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