Unidirectional solidification of Al–Cu eutectic with the accelerated crucible rotation technique

Ma, Dong; Wang, Jie; Xu, Wei; Li, Y; Liu, S

doi:10.1016/s0022-0248(98)00735-0

Cited by 8 publications

(3 citation statements)

References 15 publications

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“…The transverse flow reduces the interfacial undercooling and coarsens the lamellar eutectic structure generally. Such a transverse flow effect is consistent with experimental observations on a few eutectic alloys under varied flow conditions [12][13][14][15].…”

Section: Introductionsupporting

confidence: 90%

A model for free growth of a lamellar eutectic dendrite with an incident flow

Gao

2018

Phil. Trans. R. Soc. A.

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A model for free growth of a lamellar eutectic dendrite with an incident flow was proposed for the breakdown of a planar solid/liquid interface into a dendritic contour due to a negative thermal gradient in an undercooled liquid. The model was used to predict the growth kinetics of an -Ni/NiSn eutectic dendrite with and without an incident flow in the growth direction. The modelling showed that free eutectic growth is not sensitive to the tip selection parameter of the eutectic dendrite, but is sensitive to incident flow of magnitude larger than eutectic growth velocities. While the larger incident flow increases the eutectic growth velocities generally, it has opposing effects on the interlamellar spacings depending on undercooling. The prediction of the model awaits experimental validation.This article is part of the theme issue 'From atomistic interfaces to dendritic patterns'.

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Section: Introductionsupporting

confidence: 90%

A model for free growth of a lamellar eutectic dendrite with an incident flow

Gao

2018

Phil. Trans. R. Soc. A.

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“…ACRT has been widely applied to improve the crystal quality by either improving the mixing of the liquid or achieving more diffusion controlled transport conditions in the liquid [3][4][5][6][7][8]. In a few numerical studies [9][10][11][12][13][14][15][16][17] the effect of ACRT on melt convection and segregation in crystal growth systems has been studied.…”

Section: Introductionmentioning

confidence: 99%

Effect of accelerated crucible rotation on the segregation of impurities in vertical Bridgman growth of multi-crystalline silicon

Bellmann

Meese

Arnberg

2011

Journal of Crystal Growth

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“…More commonly, the accelerated crucible rotation technique (ACRT) has been applied to Bridgman systems [10][11][12][13][14][15][16]. Lan [6] considered rotation rates up to 100 rpm which led to an increased radial segregation at all longitudinal positions.…”

Section: Introductionmentioning

confidence: 99%

Effect of steady crucible rotation on the segregation of impurities in vertical Bridgman growth of multi-crystalline silicon

Bellmann

Meese

2011

Journal of Crystal Growth

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a b s t r a c tWe have performed axisymmetric, transient simulations of the vertical Bridgman growth of multicrystalline (mc) silicon to study the effect of the steady crucible rotation on the melt flow and impurity segregation. A solute transport model has been applied to predict the final segregation pattern of impurities in a circular ingot. Imposing rotation rates of 1-5 rpm on the system makes radial segregation much worse compared to the non-rotating case. Low rotation rates at 1-2 rpm increase radial segregation in the first half period of solidification, whereas at rotation rates above the effect is insignificantly small. Contrary behavior was observed for the second half period of solidification. Here radial segregation is increased at high rotation rates from 3 to 5 rpm with small impact at 1-2 rpm.

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Unidirectional solidification of Al–Cu eutectic with the accelerated crucible rotation technique

Cited by 8 publications

References 15 publications

A model for free growth of a lamellar eutectic dendrite with an incident flow

A model for free growth of a lamellar eutectic dendrite with an incident flow

Effect of accelerated crucible rotation on the segregation of impurities in vertical Bridgman growth of multi-crystalline silicon

Effect of steady crucible rotation on the segregation of impurities in vertical Bridgman growth of multi-crystalline silicon

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