| Effect of electric current on the cast micro-structure of Al-Si alloy |
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| 引用本文： | Guangming XU,Jiawei ZHENG,Yong LIU,Jianzhong CUI(The key Laboratory of Electromagnetic Processing,Materials of Ministry of Education,Northeastern University,Shenyang110004,Liaoning,P. R. China). Effect of electric current on the cast micro-structure of Al-Si alloy[J]. 中国铸造, 2005, 2(3) |
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| 作者姓名： | Guangming XU Jiawei ZHENG Yong LIU Jianzhong CUI(The key Laboratory of Electromagnetic Processing Materials of Ministry of Education Northeastern University Shenyang110004 Liaoning P. R. China) |
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| 作者单位： | The key Laboratory of Electromagnetic Processing，Materials of Ministry of Education，Northeastern University，Shenyang110004，Liaoning，P. R. China |
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| 摘 要： | 1. IntroductionRecently,much work has been contributed to study theeffect of electromagnetic field on the properties of castaluminum alloy. Results of CUI indicated that the meltingpoint of aluminum alloys was changed. The melting pointof aluminum alloy, such as Al-Cu alloy, decreased inmagnetostatic field, and increased in alternating magneticfield. Results of BAN showed that the solute content ofalloying element increased as electromagnetic fieldapplied during solidification. Electromagn…
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Effect of electric current on the cast microstructure of Al-Si alloy |
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| Guangrning XU,Jiawei ZHENG,Yong LIU,Jianzhong CUI. Effect of electric current on the cast microstructure of Al-Si alloy[J]. China Foundry, 2005, 2(3) |
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| Authors: | Guangrning XU Jiawei ZHENG Yong LIU Jianzhong CUI |
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| Abstract: | Effect of electric current on the cast microstructure of Al-Si alloy was investigated. It was found that the microstructure of Al-Si alloy was refined as the electric current was applied during solidification. When DC (Direct Current) was applied in solidification, the eutectic Si flakes are similar to those solidified without current, but its length was shortened and its distribution was changed ,with most of the Si flakes arrange in the radial direction, because of the electromagnetic force that resulted from the DC. On the other hand, when AC (Alternating Current) was applied during the solidification of Al-Si alloy, most of the minute hooks on the silicon flakes that were found under DC or without any applied current were broken into small silicon particles. Through silicon concentration measurement by electron microprobe, it was found that the silicon content in the α-Al matrix increased with the current application during solidification, and the effect is more obvious when AC was applied. |
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| Keywords: | electric current solidification Al-Si alloy eutectic silicon |
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