Journal of Materials Science

, Volume 29, Issue 3, pp 736–741 | Cite as

Effect of antimony on the growth kinetics of aluminium-silicon eutectic alloys

  • S. Khan
  • R. Elliott


On treating aluminium-silicon alloy with 0.2 wt% Sb, it was revealed that antimony refines the eutectic structure by reducing the interflake spacing rather than acting as a modifier. The growth mechanism is similar to the unmodified Al=Si flake structure, giving the relationships of the type ΔT=K1V0.51 and λ=K2V−0.4, where K1 and K2 are constants at high solidification rate, the transition from flake to fibre is observed. However, this transition occurs at lower velocity compared to quench modification of the pure alloy. The high magnitude of undercooling measured with the antimony-treated alloy is attributed to constitutional undercooling, which leads to extra refinement of the Al-Si eutectic structure.


Polymer Antimony Lower Velocity Growth Mechanism Growth Kinetic 
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  1. 1.
    A. Pacz, US Pat. 1387 900 August 1921.Google Scholar
  2. 2.
    G. Nagel and R. Portalier, Int. Cast Metals J. AFS 5 (4) (1980) 2.Google Scholar
  3. 3.
    R. Sharan and N. P. Saksena, ibid 3 (1) (1978 29.Google Scholar
  4. 4.
    J. Charbonnier, J. J. Perrier and R. Portalier, ibid 3 (4) (1978) 17.Google Scholar
  5. 5.
    P. Danami and M. Ghafelehbashi, Br. Foundry Man Soc., 72 (1) (1979 4.Google Scholar
  6. 6.
    R. Elliott, “Eutectic Solidification Processing” Butterworth Monograph in Materials (Butterworths, London, 1983).Google Scholar
  7. 7.
    S. E. Kisak-U-Rek, paper presented at the World Foundry Congress, 7–12 September, Prague, Czechoslovakia (1986).Google Scholar
  8. 8.
    S. Khan and R. Elliott, Acta Metall. 41 (1993) 2433.CrossRefGoogle Scholar
  9. 9.
    S. Khan, PhD Thesis, University of Manchester (1990).Google Scholar
  10. 10.
    S. B. Yaneva, N. V. Stoichev and A. D. Panajetava, Cryst. Res. Technol. 16 (1991) pp737.Google Scholar
  11. 11.
    S. Khan, in Conference Proceedings, “2nd International Symposium on Advance Material”, 15–19 September, Islamabad, Pakistan (1991).Google Scholar
  12. 12.
    S. Khan, paper presented at the 4th National Symposium on Frontiers in Physics, Quiad-i-Azam University, 15–19 April, Islamabad, Pakistan (1992).Google Scholar
  13. 13.
    Shu-zu-lu and A. Hellawell, Metall. Trans. 18A (1987) 1721.Google Scholar
  14. 14.
    P. Magnin and W. Kurz, Acta Metall. 35 (1987) 1119.CrossRefGoogle Scholar
  15. 15.
    L. M. Hogan and H. Song, Metall. Trans. 9A (1987) 1036.Google Scholar

Copyright information

© Chapman & Hall 1994

Authors and Affiliations

  • S. Khan
    • 1
  • R. Elliott
    • 2
  1. 1.Metallurgy DivisionA. Q. Khan Research LaboratoriesRawalpindiPakistan
  2. 2.Material Science CentreUniversity of ManchesterManchesterUK

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