Number：

07_02郭永聖

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Name：

Yeong-Sant Kuo

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Influences of Casting Geometry and Cooling Rate on Decdrite Cell Size of A201 Aluminum Alloy Castings

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Keywords：A201 Aluminum Alloy,Cooling Rate,Dendrite Cell Size

A201鋁合金.凝固時間.樹枝間狀組織尺寸

Abstract：A201 aluminum alloy plate castings with systematic change in the riser size,together with variation of thickness and lengh,were cast in different kinds of molds to find out the influence of cooling rate on the dendrite cell size.The sand molds with end chill for the plate castings were made of 100% silica sand.The dendrite cell size of A201 aluminum alloy plate castings is governed by the cooling rate.The faster the cooling rate,the smaller the dendrite cell size was found in this study.

有系統改變A201鋁合金平板鑄件的腸肚.厚度.及冒口大小的方案設計,探討不同冷卻速率對A201平板鑄件樹枝間狀晶包尺寸(Dendrite Cell Size,DCS)的影響情形,進而於鑄造實務工作時,可為冒口設計及金屬凝固之參考,為本研究的目的。由實驗結果顯示,A201鋁合金平板鑄件的樹枝間狀晶包尺寸(Dendrite Cell Size,DCS)受鑄件冷卻速率的影響,鑄件的DCS隨冷卻速率增快而變小。

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