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是韩文的，哪位懂的话，能不能翻译出来，内容应该不错3 y8 x: D1 v& n# z: H1 [! R0 H8 @- ]
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Effects of Mn, Cr, and Sr Additions on the Microstructure and Tensile Properties of Al-7Si-0.4Mg-1Fe Casting Alloy
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2 X- U2 W7 h" x _+ ?/ P: }: ? [Jeong-Min Kim†, Joon-Sik Park, Ha-Young Kim, Jae-Ik Cho*, and Chang-Yeol Jung*9 _ P" ^2 r, \' V- L$ j4 C# r0 L
Division of Advanced Materials Engineering, Hanbat National University, Daejeon 305-719, Korea% \: v4 D& b& _0 c3 Z
*Kwangju R&D Center, Korea Institute of Industrial Technology, Kwangju 500-480, Korea K2 `5 F+ Q7 @% W3 i
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Abstract
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The 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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Key words : Casting, Aluminum alloy, Tensile Properties, Iron content.
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1 u3 _ |, w3 R[ 本帖最后由 三维观察员 于 2009-9-10 12:53 编辑 ] |
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发表于 2009-9-10 12:48:48
