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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 l" f% K7 M$ A; |( ] t# W( n: ~$ R
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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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$ X6 |* t& k& \5 BJeong-Min Kim†, Joon-Sik Park, Ha-Young Kim, Jae-Ik Cho*, and Chang-Yeol Jung*
0 V& F) w$ Q0 `$ ]+ M" D; s# {Division of Advanced Materials Engineering, Hanbat National University, Daejeon 305-719, Korea2 w3 r: O% v8 Q: A
*Kwangju R&D Center, Korea Institute of Industrial Technology, Kwangju 500-480, Korea$ F( D% K7 M0 E A3 S
( ^# ?& p- C, N0 ZAbstract
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9 K' R8 w, e+ tThe 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.2 f+ k+ p. K, c8 K: u6 X7 h
; U& R( r6 o- qKey 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
