Effects of Mn, Cr, and Sr …… Al-7Si-0.4Mg-1Fe Casting Alloy

三维观察员

是韩文的，哪位懂的话，能不能翻译出来，内容应该不错

+ ?! ^" M, ^8 EEffects of Mn, Cr, and Sr Additions on the Microstructure and Tensile　Properties of Al-7Si-0.4Mg-1Fe Casting Alloy
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( I- A8 ?, J/ v1 a! k  j9 r  }9 O- FJeong-Min Kim†, Joon-Sik Park, Ha-Young Kim, Jae-Ik Cho*, and Chang-Yeol Jung*
6 j8 F% W$ a2 \7 m% k; V/ BDivision of Advanced Materials Engineering, Hanbat National University, Daejeon 305-719, Korea
/ v0 b2 \0 @$ q! B  a7 g7 z*Kwangju R&D Center, Korea Institute of Industrial Technology, Kwangju 500-480, Korea
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, k/ R. _: P# r# ?: O. {. |Abstract

7 n6 U8 M. B- |& t  JThe microstructure of Al-7Si-0.4Mg-1Fe alloy mainly consists of aluminum dendrites, Al-Si eutectics, and Al5FeSi needles.When Mn was added to the alloy, the substantial amount of Al5FeSi phase was changed into Al(Mn,Fe)Si, however the needle-like　morphology was almost unchanged. Combined additions of Cr or Sr with Mn to the base alloy resulted in rod-like Al(Mn, Fe,Si)Si　phase. The tensile properties of as-cast alloys were enhanced by the Mn addition, especially when it was added with Sr. The tensile　properties after T6 heat treatment was a little improved with 0.7%Mn addition, but Cr or Sr additions with Mn didn't show any positive　effect on the properties of heat-treated alloys.
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$ K5 t& i; H" t+ }  t* d# RKey words : Casting, Aluminum alloy, Tensile Properties, Iron content.

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[ 本帖最后由 三维观察员 于 2009-9-10 12:53 编辑 ]