LFEC and LFEVC of AZ80 magnesium alloy  

作　　者：LE Qichi,CUI Jianzhong,ZHANG Zhiqiang,and GUO Shijie Key Laboratory of EPM,Northeastern University,Shenyang 110004,China 

出　　处：《Rare Metals》2007年第S1期109-114,共6页稀有金属（英文版）

基　　金：This work is financially supported by the Emphasis Project Fund of National Eleven Five-Year Scientific and Technical Support Plans ( No 2006BAE04B02);the National Natural Science Foundation of Chi-na ( No 50574028);the Programme of Introducing Talents of Discipline to Universities(No B07015) ;the Cultivation Fund of the Key Scientific and Technical Innovation Project,Ministry of Education of China(No 704015)

摘　　要：The effects of a low frequency electromagnetic field and a low frequency electromagnetic vibration field applied during DC casting of AZ80 Mg on microstructures and alloying element distribution in ingots were investigated.The experiments were performed both in absence and in the presence of the magnetic fields.In DC casting,the ingot exhibited coarse microstructure and severe segregation of Al.In the presence of solo low frequency alternating magnetic field,namely LFEC,the grains of the ingot was effectively refined and the segregation of Al was significantly decreased.In LFEVC,namely low frequency electromagnetic vibration casting,the ingot were significantly refined and the segregation was suppressed.With increasing the vibration intensities,the grain refinement and segregation suppression were increased.The effects of a low frequency electromagnetic field and a low frequency electromagnetic vibration field applied during DC casting of AZ80 Mg on microstructures and alloying element distribution in ingots were investigated.The experiments were performed both in absence and in the presence of the magnetic fields.In DC casting,the ingot exhibited coarse microstructure and severe segregation of Al.In the presence of solo low frequency alternating magnetic field,namely LFEC,the grains of the ingot was effectively refined and the segregation of Al was significantly decreased.In LFEVC,namely low frequency electromagnetic vibration casting,the ingot were significantly refined and the segregation was suppressed.With increasing the vibration intensities,the grain refinement and segregation suppression were increased.

关 键 词：DC casting low frequency electromagnetic casting(LFEC) low frequency electromagnetic vibration(LFEVC) MICROSTRUCTURES SEGREGATION 

分 类 号：TG146.22[一般工业技术—材料科学与工程]