발간논문

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Vol.31, No.8, 966 ~ 975, 1993
Title
Solidification behaviors of hypereutectic Al - Si Alloy under forced Fluid flow
이강명K . M . Yi, 윤우영W . Y . Yoon, 백홍구H . K . Baik, 윤의박E . P . Yoon
Abstract
A solidification of hypereutectic Al-30%Si alloy was studied under the condition of the forced fluid flow. The melt was stirred by a rapidly rotating graphite bar on whose surface the primary silicon was solidified. The average silicon content in the solid was more than 80% and the purity increased with the convection increased. The perfect Mixing Parameter(PMP) was introduced and used to rationalize the level of the purity achieved. Both the solute distributions in liquid and solid were influenced by fluid flows and affected the solidification behaviors. The temperature distributions in melts were also analogized by paraffin tests. The microstructural changes of the solid were showed along the position of the specimens and agreed well with its compositional change.
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