TY  - SER
AU  - liao, H. C.
AU  - Song, W.
AU  - Wang, Q. G.
AU  - Zhao, L.
TI  - Effect of Sr Addition on Porosity  Formation in Directionaliy Solidified A356 Alioy
KW  - Al-Si Alioy
KW  - Directional Solidification
KW  - X-Ray Imaging
ER  -