Journal of Korea Foundry Society (한국주조공학회지)

Korea Foundry Society (한국주조공학회)
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Effects of Ca on the Refinement of Microstructure in Aluminum B390 Alloy

알루미늄 B390합금의 조직미세화에 미치는 Ca의 영향

  • Kim, Heon-Joo (Department of Metallurgical Engineering, Pukyong National University)
  • 김헌주 (부경대학교 금속공학과)
  • Published : 2002.10.20
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Abstract

Effects of Ca content on the refinement of primary Si of Aluminum B390 alloy have been examined. Ca was found to have an effect on the refinement of primary Si particle. Primary Si particle size has been refined as Ca content of the melts decreased and cooling rate increased. A control of Ca content by the addition of $CuCl_2$ to the melt was the most efficient in the refinement of primary Si particles. The minimum size of primary Si particles in this study was $15.0\;{\mu}m$ when a residual content of Ca element in the alloy was 5ppm, Primary Si particle size was refined as primary Si crystallization temperature increased, which was attributed to the decrease of Ca content in the melts.

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References

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