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Grain Refinement in Undercooled Metals

descriptionPublicationkeyboard_double_arrow_right Article 01 Jan 1997Publisher:Springer Science and Business Media LLCJournal:MRS Proceedings, volume 481 (issn: 0272-9172, eissn: 1946-4274,

Authors: H. Yang; H. W. Kui; J. Z. Xiao; J. Z. Xiao;

doi: 10.1557/proc-481-15

Grain Refinement in Undercooled Metals

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Abstract

ABSTRACTRecently, it was demonstrated that grain refinement in metals can take place through two mechanisms, namely, dynamic nucleation and remelting of initially formed dendrites. In this study, it was found that Ni99.45B0.55 undergoes grain refinement, both by dynamic nucleation or by remelting, depending on the initial bulk undercooling just before crystallization. The nature of the grain refinement process is confirmed by microstructural analysis of the undercooled specimens.

Related Organizations

Huazhong University of Science and Technology
China (People's Republic of)
Chinese University of Hong Kong
China (People's Republic of)

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