발간논문

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Vol.30, No.8, 938 ~ 946, 1992
Title
Microstructural Analysis of squeeze cast 2024 / 20% SiC whisker composites
오규환 , 이호인 , B . Cantor Kyu Hwan Oh , Ho In Lee
Abstract
Microstruture of squeeze cast 2024/20% SiC whisker composite was studied using transmission electron microscopy with energy dispersive spectrometry. Microstructure was oberserved at as-cast, solution treated. In as-cast condition, S`, θ`, S phase was observed in the matrix and at the interface Al_(15)(Fe, Mn)₃Si₂, θ, S phase was observed. After solution treatment, previous phase in the matrix were dissolved and Al_(20)Cu₂Mn₃ shape precipitate was observed in the matrix. Al_(15)(Fe, Mn)₃Si₂ phase which was formed in the casting stage was unchanged and Al_(20)Cu₂Mn₃ precipitate was observed at the interface.
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