Journal of Korea Foundry Society (한국주조공학회지)

Korea Foundry Society (한국주조공학회)
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Influence of Solidification Condition on the Segregation of SiC Particles in the Al-Si/$SiC_p$ Composites

Al-Si/$SiC_p$ 복합재료에서 SiC의 편석에 미치는 응고 조건의 영향

  • Kim, Jong-Chan (Dept. of Met. Eng. of Yeunmudae Mech. Tech. High School) ;
  • Kwon, Hyuk-Moo (Dept. of Metallurgical Eng. of Chungnarn Univ.)
  • 김종찬 (연무대기계공업고등학교 금속과) ;
  • 권혁무 (충남대학교 금속공학과)
  • Published : 1997.04.20
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Abstract

The influence of solidification condition on the segregation of SiC particles in the $Al-xSi/6wt%SiC_p$(x: 6, 10, 14, 18${\cdot}$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 ${\mu}m/sec$. 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 ${\varphi}22{\mu}m$.

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