Prediction of Solid-liquid Interfacial Energy of Steel during Solidification and Control of Dendrite Arm Spacing

Solid-liquid interfacial energy of steel during solidification was measured predicted from the both experimental techniques of unidirectional solidification and thermal analysis applying the dendrite growth model and heterogeneous nucleation model. Solid-liquid interfacial energy changed depending o...

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Bibliographic Details
Published inISIJ International Vol. 52; no. 12; pp. 2235 - 2244
Main Authors Mizukami, Hideo, Hayashi, Koutarou, Numata, Mitsuhiro, Yamanaka, Akihiro
Format Journal Article
LanguageEnglish
Published Tokyo The Iron and Steel Institute of Japan 2012
Iron and Steel Institute of Japan
Subjects
Applied sciences
bismuth
dendrite arm spacing
Exact sciences and technology
Metals. Metallurgy
solid-liquid interfacial energy
solidification
undercooling
Subcooling
solid-liquid interfacial energy
Prediction
dendrite arm spacing
Microstructure
undercooling
Molten steel
Interface
Dendrite
Solidification
bismuth
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Summary:Solid-liquid interfacial energy of steel during solidification was measured predicted from the both experimental techniques of unidirectional solidification and thermal analysis applying the dendrite growth model and heterogeneous nucleation model. Solid-liquid interfacial energy changed depending on primary phase during solidification, i.e., that of primary δ phase was larger than that of γ phase. When the primary phase was the same, solid-liquid interfacial energy increased with increasing C content. Primary dendrite arm spacing changed depending on solid-liquid interfacial energy. A trace amount of Bi which had the effect of a decrease in the solid-liquid interfacial energy of steel during solidification decreased primary and secondary dendrite arm spacing, significantly.
ISSN:0915-1559
1347-5460
DOI:10.2355/isijinternational.52.2235