Journal of Korea Foundry Society (한국주조공학회지)

Korea Foundry Society (한국주조공학회)
권호 표지

Effect of Electromagnetic Stirring on Microstructure Evolution in Solidification of a Near-Eutectic Al-Si Alloy

  • Guo, Qing-Tao (Center for Computer-Aided Solidification Processing, Yonsei Univ. Metallurgical System Engineering) ;
  • Sim, Jae-Gi (Center for Computer-Aided Solidification Processing, Yonsei Univ. Metallurgical System Engineering) ;
  • Jang, Young-Soo (Center for Computer-Aided Solidification Processing, Yonsei Univ. Metallurgical System Engineering) ;
  • Choi, Byoung-Hee (Center for Computer-Aided Solidification Processing, Yonsei Univ. Metallurgical System Engineering) ;
  • Lee, Moon-Hyoung (Center for Computer-Aided Solidification Processing, Yonsei Univ. Metallurgical System Engineering) ;
  • Hong, Chun-Pyo (Center for Computer-Aided Solidification Processing, Yonsei Univ. Metallurgical System Engineering)
  • Published : 2008.09.20
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Abstract

본 논문에서는 공정조성 부근의 Al-Si 합금의 미세구조에 미치는 전자기교반(EMS)의 영향에 대하여 연구하였다. 초정 a 상의 형상에 미치는 전자기교반의 세기의 영향을 조사하기 위하여 각각 교반장치에 60, 80,및 120V의 전압을 가하여 미세조직을 관찰하였다. 60V 이하의 전압이 인가되었을 때 전자기교반의 효과가 나타나지 않은 반면에, 80V 이상의 전압으로 5초 이상 인가되었을 때 구상화된 초정 a 상을 얻을 수 있었다. 인가된 전압이 120V일 때 초정 a 상은 보다 균일한 분포를 가지며 구상화 되었다. 전자기교반의 세기와 함께 교반시간의 영향을 확인하기 위하여 교반시간을 증가시키면서 미세조직을 관찰하였다. 또한 초정 a 상의 형상에 미치는 주조변수의 영향에 대해서도 실험하였다.

Keywords

References

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