Effects of solidification parameters and magnetic field on separation of primary silicon from hypereutectic Ti–85 wt.% Si melt

Zhu, Kuisong; Hu, Jingfei; Ma, Wenhui; Wei, Kuixian; Lv, Tianlong; Dai, Yongnian

doi:10.1016/j.jcrysgro.2019.05.012

Cited by 11 publications

(1 citation statement)

References 28 publications

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“…There was also a slight segregation in the specimen center [73], which was not observed in the present study (Figures 7c,d, 8 and 9). Yu et al [74] obtained a separation of plate-like Si crystals under electromagnetic stirring in an Al-Si 45 wt.% Si alloy, Ma et al [75] in a Sn-60 mol% Si (about Sn-74 wt.% Si), Zhu et al [76] in a Ti-85 wt.% Si alloy and Li Y. et al [77] obtained the separation of Si crystals in an Al-30 wt.% Si alloy, as a result of mechanical stirring. Ban et al [78] applied an electromagnetic field to an Al-30 wt.% Si alloy and observed an increase in the average mass and size of primary Si flakes.…”

Section: Reduction Of Si Crystalsmentioning

confidence: 99%

Distribution and Morphology of α-Al, Si and Fe-Rich Phases in Al–Si–Fe Alloys under an Electromagnetic Field

Mikołajczak

2023

Materials

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Natural convection is present in all liquid alloys whereas forced convection may be applied as the method to improve material properties. To understand the effect of forced convection, the solidification in simple cylindrical samples was studied using a rotating magnetic field with a low cooling rate and low temperature gradient. The composition of Al–Si–Fe alloys was chosen to enable independent growth or joint growth of occurring α-Al, β-Al5FeSi, δ-AlFeSi_T4 phases and Si crystals and analysis of structure modifications. Stirring produced rosettes instead of equiaxed dendrites, which altered the secondary dendrite arm spacing and the specific surface of α-Al and also modified β-Al5FeSi. The melt flow caused a modification of iron rich δ-AlFeSi_T4 phases and gathered them inside the sample of the β/Si alloy, where δ together with Si were the first precipitating phases. The separation of δ and β phases and Si crystals was found by their joint growth along the monovariant line. A reduction in the amount of Si crystals and the formation of a thin Si-rich layer outside the sample was observed in the hypereutectic alloy. The separation and reduction in iron-rich phases may play a role in the removal of Fe from Al–Si alloys, and the control of Si may be applied in materials for the solar photovoltaic industry.

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Section: Reduction Of Si Crystalsmentioning

confidence: 99%

Distribution and Morphology of α-Al, Si and Fe-Rich Phases in Al–Si–Fe Alloys under an Electromagnetic Field

Mikołajczak

2023

Materials

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Effect of pull-down rate and power on electromagnetic separation of hypereutectic Ti–Si alloy under vacuum

et al. 2022

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Segregation Behavior of Impurity Iron in Primary Silicon During Directional Solidification of a Hypereutectic Silicon–Titanium Alloy

Zhou

Zhu

Deng

et al. 2022

Metall Mater Trans B

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Effects of solidification parameters and magnetic field on separation of primary silicon from hypereutectic Ti–85 wt.% Si melt

Cited by 11 publications

References 28 publications

Distribution and Morphology of α-Al, Si and Fe-Rich Phases in Al–Si–Fe Alloys under an Electromagnetic Field

Distribution and Morphology of α-Al, Si and Fe-Rich Phases in Al–Si–Fe Alloys under an Electromagnetic Field

Effect of pull-down rate and power on electromagnetic separation of hypereutectic Ti–Si alloy under vacuum

Segregation Behavior of Impurity Iron in Primary Silicon During Directional Solidification of a Hypereutectic Silicon–Titanium Alloy

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Effects of solidification parameters and magnetic field on separation of primary silicon from hypereutectic Ti–85 wt.% Si melt

Cited by 11 publications

References 28 publications

Distribution and Morphology of α-Al, Si and Fe-Rich Phases in Al–Si–Fe Alloys under an Electromagnetic Field

Distribution and Morphology of α-Al, Si and Fe-Rich Phases in Al–Si–Fe Alloys under an Electromagnetic Field

Effect of pull-down rate and power on electromagnetic separation of hypereutectic Ti–Si alloy under vacuum

Segregation Behavior of Impurity Iron in Primary Silicon During Directional Solidification of a Hypereutectic Silicon–Titanium Alloy

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Effects of solidification parameters and magnetic field on separation of primary silicon from hypereutectic Ti–85 wt.% Si melt