Faculty of Material and Chemical Engineering;
diangxi University of Science and Technology;
Ganzhou 341000;
P. R.China;
School of Material of Science and Engineering;
University of Science and Technology Beijing;
Beijing 100083;
P.R. China;
School of Material of Science and Engineering;
University of Science and Technology Beijing;
Beijing 100083;
P.R. China;
semi-solid; low; superheat; pouring; weak; electromagnetic; stirring; hypoeutectic; Al-Si; alloy; A356; Al; alloy;