8GHOMASHCHI M R, VIKHROV A. Squeeze casting: an overview[J].Journal of Materials Processing Technology, 2000, 101 : 1-9.
9LEE C D. Effects of microporosity on tensile properties of A356 aluminum alloy[J].Materials Science and Engineering, 2007, A464:249-254.
10ARAMI H, KHALIFEHZADEH R, AKBARI M, et al. Microporosity control and thermal-fatigue resistance of A319 aluminum alloy [J]. Materials Science and Engineering, 2008, A472: 107-114.