Abstract
The purpose of this contribution is to demonstrate that the presence of strontium in hypoeutectic Al-Si alloys significantly influences the kinetics of nucleation of eutectic silicon; and therefore, contrary to current belief, a complete theory for the mechanism of modification of the eutectic phases in hypoeutectic Al-Si alloys by strontium must address not only the Growth aspects of the process, but also its Nucleation aspects.
This is a preview of subscription content, log in via an institution to check access.
Similar content being viewed by others
References
Granger D. and Elliott R., ASM Metals Handbook, 9th ed., ASM Int., Metals Park, OH, vol. 15, p 162 (1988).
Bernal J.D., Nature, “A Geometrical Approach to the Structure of Liquids”, vol. 183, Issue 4655, pp 141–147 (1959).
Kobayashi K. and Hogan L.M., “The Crystal Growth of Silicon in Al-Si Alloys” Journal of Materials Science, vol. 20, no. 6, pp 1961–1975 (1985).
Ino S. and Ogawa S., “Multiply Twinned Particles at Earlier Stages of Gold Film Formation on Alkalihalide Crystals” Journal of the Physical Society of Japan, vol. 22, no. 6, pp 1365–1374 (1967).
Okamoto H., Journal Phase of Equilibria and Diffusion, vol. 27, no. 2, p 204 (2006).
Itkin V.P. and Alcock C.B., Bulletin of Alloy Phase Diagrams, vol. 10, no. 6, p 630 (1989).
Turnbull D. and Fisher J.C., Journal of Chemical Physics, vol. 17, p 71 (1949).
Campbell J., International Journal of Cast Metals, vol. 3, no. 1, p 65 (2009).
Crosley P.B. and Mondolfo L.F., Modern Castings, vol. 46, p 89 (1966).
Shankar S., Riddle Y.W., and Makhlouf M.M., “Nucleation Mechanism of the Eutectic Phases in Aluminum-Silicon Hypoeutectic Alloys” Acta Materialia, vol. 52, Issue 15, pp 4447–4460 (2004).
Liu L., Ph.D. Thesis, “Paramètres Métallurgiques Contrôlant L’évolution Microstructurale Dans Les Alliages De Fonderie Al-Si-Mg and Al-Si-Cu” University of Quebec at Chicoutimi, p 248 (2003).
Song K., Kikutchi T., Yoshida M., and Nakae H., Nippon Kinzoku Gakkaishi, vol. 58, no. 12, p 1454 (1994) (in Japanese).
Nakae H., in “Solidification and Casting” B. Cantor and K. O’Reilly eds., Institute Of Physics Publishing, Bristol, UK, p 326 (2003).
Gruzleski J.E and Closset B.M., “The Treatment of Liquid Aluminum-Silicon Alloys,” American Foundry Society, Des Plaines, IL, p 31 (1990).
Verhoeven J.D., Fundamentals of Physical Metallurgy, John Wiley and Sons, New York, NY, p 225 (1975).
Bian X., Wang W., and Qin J., Materials Science Forum, vol. 331, p 349 (2000).
Shankar S., Prakash SV., Malik M., Jeykumar M., Walker M.J, and Hamed M., Proceedings of 113th TMS Annual Meeting, San Francisco, CA, p 173 (2009).
McDonald S.D., Dahle A.K,. Taylor J.A, and St. John D.H., “Eutectic Grains in Unmodified and Strontium-Modified Hypoeutectic Aluminum-Silicon Alloys” Metallurgical and Materials Transactions A, vol. 35, no. 6, pp 1829–1837 (2004).
Makhlouf M.M., Proc. of the Int. Summer School on High Integrity Die Casting, WPI, Worcester, MA (2008).
Closset B., Dugas H., Pekguleryuz M., and Gruzleski J.E., The Aluminum-Strontium Phase Diagram, Metallurgical and Materials Transactions A, vol. 17, no. 7, p 1250–1253 (1986).
Alcock C.B. and Itkin V.P., Bulletin of Alloy Phase Diagrams, vol. 10, no. 6, p 614 (1989).
Hamilton D.R. and Seindensticker R.G., Journal of Applied Physics, vol. 31, p 1165 (1960).
Lu S. and Hellawell A., “The Mechanism of Silicon Modification in Aluminum-Silicon Alloys
Impurity Induced Twinning”, Metallurgical and Materials Transactions A, vol. 18, no. 10, pp 1721–1733 (1987).
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
Makhlouf, M. On the Mechanism of Modification of the Aluminum-Silicon Eutectic by Strontium: The Role of Nucleation. Inter Metalcast 4, 47–50 (2010). https://doi.org/10.1007/BF03355485
Published:
Issue Date:
DOI: https://doi.org/10.1007/BF03355485