Solidification regularity of highly undercooled Fe-Co alloy

Ning Liu; Gencang Yang; Feng Liu; Yuzeng Chen; Changlin Yang; Yaohe Zhou

Solidification regularity of highly undercooled Fe-Co alloy

Ning Liu, Gencang Yang, Feng Liu, Yuzeng Chen, Changlin Yang, Yaohe Zhou

School of Materials Sience and Engineering

Northwestern Polytechnical University Xian

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

9 Scopus citations

Abstract

Fe-Co melts with different Co contents were highly undercooled using fluxing purification method. With increasing the initial melt undercooling (AT), grain refinement occurred twice in Fe_100-x-Co_x(x=10-40) alloy, except Fe₉₀Co₁₀. When undercooling of the melt exceeds the critical undercooling, the microstructure is no longer single phase and metastable phase appears. Except transition at low undercooling, both of the exact undercooling for microstructure transition and the critical undercooling for formation of metastable phase increase with the content of Co. Furthermore, B-C-T model and transient nucleation theory were applied to analyze the microstructure evolutions of Fe-Co alloy.

Original language	English
Pages (from-to)	449-453
Number of pages	5
Journal	Jinshu Xuebao/Acta Metallurgica Sinica
Volume	43
Issue number	5
State	Published - May 2007

Keywords

Competitive nucleation
Fe-Co alloy
Grain refinement
High undercooling
Metastable phase
Solidification

Cite this

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abstract = "Fe-Co melts with different Co contents were highly undercooled using fluxing purification method. With increasing the initial melt undercooling (AT), grain refinement occurred twice in Fe100-x-Cox(x=10-40) alloy, except Fe90Co10. When undercooling of the melt exceeds the critical undercooling, the microstructure is no longer single phase and metastable phase appears. Except transition at low undercooling, both of the exact undercooling for microstructure transition and the critical undercooling for formation of metastable phase increase with the content of Co. Furthermore, B-C-T model and transient nucleation theory were applied to analyze the microstructure evolutions of Fe-Co alloy.",

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AU - Liu, Ning

AU - Yang, Gencang

AU - Liu, Feng

AU - Chen, Yuzeng

AU - Yang, Changlin

AU - Zhou, Yaohe

PY - 2007/5

Y1 - 2007/5

N2 - Fe-Co melts with different Co contents were highly undercooled using fluxing purification method. With increasing the initial melt undercooling (AT), grain refinement occurred twice in Fe100-x-Cox(x=10-40) alloy, except Fe90Co10. When undercooling of the melt exceeds the critical undercooling, the microstructure is no longer single phase and metastable phase appears. Except transition at low undercooling, both of the exact undercooling for microstructure transition and the critical undercooling for formation of metastable phase increase with the content of Co. Furthermore, B-C-T model and transient nucleation theory were applied to analyze the microstructure evolutions of Fe-Co alloy.

AB - Fe-Co melts with different Co contents were highly undercooled using fluxing purification method. With increasing the initial melt undercooling (AT), grain refinement occurred twice in Fe100-x-Cox(x=10-40) alloy, except Fe90Co10. When undercooling of the melt exceeds the critical undercooling, the microstructure is no longer single phase and metastable phase appears. Except transition at low undercooling, both of the exact undercooling for microstructure transition and the critical undercooling for formation of metastable phase increase with the content of Co. Furthermore, B-C-T model and transient nucleation theory were applied to analyze the microstructure evolutions of Fe-Co alloy.

KW - Competitive nucleation

KW - Fe-Co alloy

KW - Grain refinement

KW - High undercooling

KW - Metastable phase

KW - Solidification

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JF - Jinshu Xuebao/Acta Metallurgica Sinica

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Solidification regularity of highly undercooled Fe-Co alloy

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