한국주조공학회

The influence of solidification condition on the segregation of SiC particles in the Al-xSi/6wt%SiC_p(x: 6, 10, 14, 18∙wt%) composites was investigated in the study. The results are as follows: 1) During the counter-gravity unidirectional solidification of Al-Si/SiC_p composites melt, most of the SiC particles are pushed to the top of the casting. 2) The SiC particles pushing in the Al-Si/SiC_p composite melts are not observed, when the interface velocity of melts increases more than 1.41 μм/sec. 3) The SiC particles are entrapped in the interdendrite regions, when the sizes of SiC particles in the Al-Si/SiC_p composites are large than φ22μм.