中国铸造2005，Vol.2Issue(3)：171-175,5.
Effect of electric current on the cast microstructure of Al-Si alloy
Effect of electric current on the cast microstructure of Al-Si alloy
1
作者信息
- 1. The key Laboratory of Electromagnetic Processing, Materials of Ministry of Education, Northeastern University, Shenyang 110004, Liaoning, P. R. China;The key Laboratory of Electromagnetic Processing, Materials of Ministry of Education, Northeastern University, Shenyang 110004, Liaoning, P. R. China;The key Laboratory of Electromagnetic Processing, Materials of Ministry of Education, Northeastern University, Shenyang 110004, Liaoning, P. R. China;The key Laboratory of Electromagnetic Processing, Materials of Ministry of Education, Northeastern University, Shenyang 110004, Liaoning, P. R. China
- 折叠
摘要
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.关键词
electric current/solidification/Al-Si alloy/eutectic siliconKey words
electric current/solidification/Al-Si alloy/eutectic silicon分类
矿业与冶金引用本文复制引用
..Effect of electric current on the cast microstructure of Al-Si alloy[J].中国铸造,2005,2(3):171-175,5.
