9LIU Zhiyong,WANG Mingxing,WENG Yonggang,et al.Grain Refinement Effect and Mechanism of Al Based Alloy Containing Low-Content Ti Produced By Electrolysis [ J ].The Chinese Journal of Nonferrous Metals.2002,12(6):1122-1126.
10Knuutinen A,Nogita K,McDonald S D,et al.Porosity formation in aluminium alloy A356 modified with Ba,Ca,Y and Yb[J].Light Metals,2001,(1):229-240.
