Grain refinement in solidification of highly undercooled eutectic Ni-Si alloy

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

doi:10.1016/j.matlet.2006.06.028

Grain refinement in solidification of highly undercooled eutectic Ni-Si alloy

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

Northwestern Polytechnical University Xian

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

29 Scopus citations

Abstract

Substantial undercooling up to 550 K (0.386T_E, with T_E as the melting point) was achieved in eutectic Ni_78.6Si_21.4 alloy melt using glass fluxing combined with cyclic superheating. Accordingly, a particular refined microcrystalline morphology is obtained in the as-solidified structure. The physical mechanism of the grain refinement subjected to high undercooling is interpreted in terms of the classical nucleation theory and LKT/BCT model. It was concluded that the above refinement can be ascribed to the substantially increased nucleation rate under high undercooling.

Original language	English
Pages (from-to)	987-990
Number of pages	4
Journal	Materials Letters
Volume	61
Issue number	4-5
DOIs	https://doi.org/10.1016/j.matlet.2006.06.028
State	Published - Feb 2007

Keywords

Grain refinement
Microstructure
Solidification
Undercooling

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10.1016/j.matlet.2006.06.028

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abstract = "Substantial undercooling up to 550 K (0.386TE, with TE as the melting point) was achieved in eutectic Ni78.6Si21.4 alloy melt using glass fluxing combined with cyclic superheating. Accordingly, a particular refined microcrystalline morphology is obtained in the as-solidified structure. The physical mechanism of the grain refinement subjected to high undercooling is interpreted in terms of the classical nucleation theory and LKT/BCT model. It was concluded that the above refinement can be ascribed to the substantially increased nucleation rate under high undercooling.",

keywords = "Grain refinement, Microstructure, Solidification, Undercooling",

author = "Yiping Lu and Feng Liu and Gencang Yang and Haipeng Wang and Yaohe Zhou",

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T1 - Grain refinement in solidification of highly undercooled eutectic Ni-Si alloy

AU - Lu, Yiping

AU - Liu, Feng

AU - Yang, Gencang

AU - Wang, Haipeng

AU - Zhou, Yaohe

PY - 2007/2

Y1 - 2007/2

N2 - Substantial undercooling up to 550 K (0.386TE, with TE as the melting point) was achieved in eutectic Ni78.6Si21.4 alloy melt using glass fluxing combined with cyclic superheating. Accordingly, a particular refined microcrystalline morphology is obtained in the as-solidified structure. The physical mechanism of the grain refinement subjected to high undercooling is interpreted in terms of the classical nucleation theory and LKT/BCT model. It was concluded that the above refinement can be ascribed to the substantially increased nucleation rate under high undercooling.

AB - Substantial undercooling up to 550 K (0.386TE, with TE as the melting point) was achieved in eutectic Ni78.6Si21.4 alloy melt using glass fluxing combined with cyclic superheating. Accordingly, a particular refined microcrystalline morphology is obtained in the as-solidified structure. The physical mechanism of the grain refinement subjected to high undercooling is interpreted in terms of the classical nucleation theory and LKT/BCT model. It was concluded that the above refinement can be ascribed to the substantially increased nucleation rate under high undercooling.

KW - Grain refinement

KW - Microstructure

KW - Solidification

KW - Undercooling

UR - http://www.scopus.com/inward/record.url?scp=33845990275&partnerID=8YFLogxK

U2 - 10.1016/j.matlet.2006.06.028

DO - 10.1016/j.matlet.2006.06.028

M3 - 文章

AN - SCOPUS:33845990275

SN - 0167-577X

VL - 61

SP - 987

EP - 990

JO - Materials Letters

JF - Materials Letters

IS - 4-5

ER -

Grain refinement in solidification of highly undercooled eutectic Ni-Si alloy

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Keywords

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