Solidification Processing

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Solidification Processing

• Lecture 19 Eutectic growth

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Eutectic point
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Eutectic point
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Microstructure-eutectic
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Eutectic structure

• Metal-metal
• Cu-Ag, rough interface
• Metal-non-metal
• Al-Si, Fe-C, smooth interface for nonmetal
• Nonmetal-nonmetal
• Smooth interface, low energy orientation

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Eutectic nucleation and growth
Phase-field simulation
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Lamellae eutectic
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Lamellae eutectic
2S?
2S???
CE
Solute distribution
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Lamellae eutectic
T
C
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Lamellae eutectic
2S?
2S???
TE
TD
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Lamellae eutectic
2S?
2S???
Tr
TE
T
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Eutectic growth
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Solute distribution
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Solute transfer
x?
y
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Solute transfer
Governing equation
(19.4)
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Lamellar spacing
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Al-Si eutectic