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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
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: t" n, ?, l8 V' I$ t6 ]3 sEffects of Mn, Cr, and Sr Additions on the Microstructure and Tensile Properties of Al-7Si-0.4Mg-1Fe Casting Alloy* A \. }/ h$ Y# q, ~
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Jeong-Min Kim†, Joon-Sik Park, Ha-Young Kim, Jae-Ik Cho*, and Chang-Yeol Jung*
. x B1 [2 [8 a& GDivision of Advanced Materials Engineering, Hanbat National University, Daejeon 305-719, Korea
0 a+ v. r8 C9 p& e0 n9 g0 o*Kwangju R&D Center, Korea Institute of Industrial Technology, Kwangju 500-480, Korea! R1 N6 n G& p
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Abstract
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, \1 `/ c2 w9 M1 }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.& s2 o1 i2 d/ H$ N( I( g
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Key words : Casting, Aluminum alloy, Tensile Properties, Iron content.4 @ ~1 _7 I+ I1 |
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. f: C6 e# l5 `8 F; 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
