Abstract
The solidification kinetics and microstructural characteristics of an A356 aluminum alloy subjected to magnetic stirring during solidification was studied by metallographic and thermal analyses. The alloy was heated to 680°C (1256°F) and poured into molds held at 200°C (392°F). Some samples were allowed to solidify in a conventional manner, whereas other samples solidified while under the influence of a permanent rotary magnetic field. The cooling curves were recorded to evaluate the effect that stirring exerts on solidification. Thermal analyses of these curves show that the temperatures associated with the solidification of aluminum dendrites and the Al-Si eutectic are reduced when a magnetic field is imposed. Metallographic observation of the samples revealed microstructural refining.
Similar content being viewed by others
References
Antona L., Moschini A., Metallurgical Science Technology, vol. 4, pp. 49–59 (1986).
Nikrityuk P.A., Eckert K., Grundmann, R., International Journal of Heat and Mass Transfer, vol. 49, pp. 1501–1515 (2006).
Vogel A., Cantor, B., Journal of Crystal Growth, vol. 37, pp. 309–316 (1977).
Doherty R.D., Lee H.I., Feest, E.A., Materials Science & Engineering A, vol. A65, pp. 181–189 (1984).
Flemings M.C., Metallurgical Transactions A, vol. 22A, pp. 957–981 (1991).
Griffiths W.D., McCartney C.G., Materials Science & Engineering A, vol. A216, pp. 47–60 (1996).
Roplekar J.K., Dantzig J.A., International Journal of Cast Metals Research, vol. 14, pp. 79–95 (2001).
Choi J.P., Kim K.B., Yoon E.P., Materials Science Forum, vol. 449–452, pp. 157–161 (2004).
Yang Z., Kang C.G., Hu Z.Q., Metallurgical & Materials Transactions A, vol. 36A, pp. 2785–2792 (2005).
Lee D.Y., Kim K.B., Kim, D.H., Materials Science Forum, vol. 486–487, pp. 550–553 (2005).
Nafisi S., Emadi D., Shehata M.T., Ghomashchi R., Materials Science & Engineering A, vol. A432, pp. 71–83 (2006).
Geffroy P.-M., Lakehal M., Goñi J., Beargnon E., Heintz J.-M. and Silvain, J.-F., Metallurgical & Materials Transactions A, vol. 37A, pp. 441–447 (2006).
Zimmermann G., Weiss A., Materials Science Forum, vol. 508, pp. 227–232 (2006).
Kovács J., Roósz A., Zöcke J., Materials Science Forum, vol. 508, pp. 263–267 (2006).
Steinback S., Euskirchen N., Witusiewics V., Sturz L., Ratke, L., Materials Science Forum, vol. 519–521, pp. 1795–1800 (2006).
Yoon E.P., Choi J.P., Yoon W.Y., Kim M.H., Kim K.H., Nam T.W., Solid State Phenomena, vol. 116–117, pp. 312–315 (2006).
Yang Z., Bae J.W., Kang C.G., Solid State Phenomena, vol. 116–117, pp. 344–349 (2006).
Lee D.-Y., Kang S.-W., Kim K.-B., Solid State Phenomena, vol. 116–117, pp. 665–668 (2006).
Steinbach S., Ratke L., Metallurgical & Materials Transactions A, vol. 38A, pp. 1388–1394 (2007).
Choi J.P., Nam T.W., Yoon E.P., Materials Science Forum, vol. 539–543, pp. 329–332 (2007).
Leiva R., Sánchez C., Mannheim R., Bustos O., Anales CONAMET-SAM 2004, SOCHIM, La Serena, Chile, pp. 651–656 (2004).
Velasco E., Talamantes J., Cano S., Valtierra S., Mojica J.F., Colás, R., Metallurgical & Materials Transactions B, vol. 30B, pp. 773–778 (1999).
Colás R., Rodríguez A., Talamantes J., Valtierra S., International Journal of Cast Metals Research, vol. 17, pp. 332–338 (2004).
Bäckerud L., Chai G., Tamminen J., Solidification Characteristics of Aluminum Alloys, vol. 2: Foundry Alloys, American Foundry Society/SkanAluminium, Des Plaines, IL (1990).
Campbell J., Castings, 2nd Ed., Butterworth-Heinemann, Oxford, (2003).
Colás R., Velasco E., Valtierra S., Castings, Handbook of Aluminum, Vol. 1: Physical Metallurgy and Processes, Totten, G.E. and MacKenzie, D.S. (eds.), M. Dekker, New York, 591 (2003).
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
Ordóñez, S., Bustos, O. & Colás, R. Thermal and Microstructural Analysis of an A356 Aluminium Alloy Solidified under the Effect of Magnetic Stirring. Inter Metalcast 3, 37–41 (2009). https://doi.org/10.1007/BF03355451
Published:
Issue Date:
DOI: https://doi.org/10.1007/BF03355451