Evaluation of Microstructure and Mechanical Property of a Novel Ceramic Salt Core

세라믹 용융코어의 미세조직과 기계적 특성

  • Lee, Jun-Ho (R& D Division for Hyundai Motor Co. & Kia Motors Corp.) ;
  • Lee, Dock-Young (Division of Materials, Korea Institute of Science and Technology)
  • 이준호 (현대자동차 기술연구소) ;
  • 이덕영 (한국과학기술연구원 기능금속재료연구센터)
  • Published : 2008.07.20

Abstract

This study deals about the development of fusible core with low melting temperature by addition of ceramic particles. A new concept of salt core was introduced to produce an integrated casting part having a complicated inner shape or requiring under-cut in high pressure die casting or squeeze casting process. The mechanical properties of fusible core were improved due to the addition of ceramic particles which helped to produce fine microstructure. The new technology for the preparation of new fusible core materials which possess high compression strength was established. Addition of ceramics particles increased the mechanical properties of fusible core materials. There was an increasing relationship between percentage of ceramic particles and mechanical strength was existed up to 60%.

Keywords

References

  1. Tatsuhico Ejima, J. of the Korean Inst. of Metals "Thermophysical Properties of Molten Salts", Vol.25. (1987) 368-377
  2. J. Kor. Foundrymen's Soc.," Microstructural evolution of electromagnetically stirred Al alloy billet during isothermal reheating at the solid-liquid state",Vol.28.No.3,(2008),129-135
  3. C. P. Hong, T. Umeda and Y. Kimura, Metall. Trans., "Numerical Models for Solidification : Part 1 & Part 2" , 15B, p. 91-101, p. 103-113, (1984)
  4. K. Ohsasa and T. Takahashi, "Radial Contraction Behavior of Solidifying Shell for Cylindrical Al-3%Si Al-3%Si Alloy Ingot" , J. Japan Inst. Metals, 52(12), (1988) 1012-1019 https://doi.org/10.2320/jinstmet1952.52.10_1012
  5. S. Engler, D. Boenisch and B. Kohler, "Metal and Mold Wall Movement during Solidification of Cast Iron", AFS Cast Metals Research Journal, 3 (1973) 20-30
  6. N. Chvorinov, "Theorie der Erstarrung von Gubtucken", Giesseri, 27 (1940) 177-186 201-208, 222-225
  7. T. M. Yue, Jour. of Mater. Process. Tech., "Squeeze casting of high-strength aluminium wrought alloy AA7010" , 66 (1997) 179-185 https://doi.org/10.1016/S0924-0136(96)02516-2
  8. Z.W. Chen, W.R. Thorpe, Mater Sci. and Eng. A, "The effect of squeeze casting pressure and iron content on the impact energy of Al-7Si-0.7Mg alloy" , 221 (1996) 143-153 https://doi.org/10.1016/S0921-5093(96)10496-2
  9. Fatih ay, S. Can Kurnaz, Mater. & Design, "Hot tensile and fatigue behaviour of zinc-aluminum alloys produced by gravity and squeeze casting" , 26 (2005) 479-485 https://doi.org/10.1016/j.matdes.2004.07.023
  10. A Bloyce, J.C Summers, Mater. Sci. and Eng. A, "Static and dynamic properties of squeeze-cast A357-SiC particulate Duralcan metal matrix composite" , 135 (1991) 231-263 https://doi.org/10.1016/0921-5093(91)90568-8
  11. M. R. Ghomashchi, K. N. Strafford, Jour. of Mater. Process. Tech., "Factors influencing the production of high integrity aluminium/silicon alloy components by die and squeeze casting processes" , 38 (1993) 303-326 https://doi.org/10.1016/0924-0136(93)90204-J
  12. P.V. Evans, R. Keyte, R.A. Ricks, Mater. &Design, "Squeeze casting of aluminium alloys for near net shape manufacture" , 14 (1993) 65-67 https://doi.org/10.1016/0261-3069(93)90050-6
  13. M.A. Sava, S. Altinta, Mater. Sci. and Eng. A, "Effects of squeeze casting on the wide freezing range binary alloys" , 173 (1993) 227-231 https://doi.org/10.1016/0921-5093(93)90220-9