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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. U1 _; s; b: |" j% K8 w$ P
1 W6 F, l1 z8 l' M% hEffects of Mn, Cr, and Sr Additions on the Microstructure and Tensile Properties of Al-7Si-0.4Mg-1Fe Casting Alloy" W! J3 c' p9 R
; }1 l* n2 w% l* mJeong-Min Kim†, Joon-Sik Park, Ha-Young Kim, Jae-Ik Cho*, and Chang-Yeol Jung*: }/ `. w2 |' g) V( v( B1 N* R5 b
Division of Advanced Materials Engineering, Hanbat National University, Daejeon 305-719, Korea
& L y6 ~" i% D/ \0 V8 C*Kwangju R&D Center, Korea Institute of Industrial Technology, Kwangju 500-480, Korea
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; C- v+ y7 l" h4 Z" c% l* K- L; B; GAbstract( T X3 G. i! ]5 f' R/ @ k1 |" b7 A
8 h; R9 `0 a) h. VThe 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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[ 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
