The Effect of Chemistry and Cooling Rate on the Latent Heat Released during the Solidification of the 3XX Series of Aluminum Alloys


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The latent heat of solidification of any alloy depends on its chemistry that consequently affects the macro and microstructures for the given solidification conditions. In order to analyze the effects of chemistry on the release of latent heat during solidification of the industrial 3XX series of aluminum alloys, four different levels of silicon (5, 7, 9 and 11wt% Si) and three different levels of copper (1, 2 and 4 wt% of Cu) were taken into consideration. The solidification process was studied at cooling rates of 6 and 10°C/minute. The solidification path of these alloys was determined and the corresponding latent heat released during the solidification process was measured using a Differential Scanning Calorimeter (DSC). The tested hypoeutectic alloy chemical composition was expressed by the novel concept of silicon equivalency. The findings indicate that increases in the cooling rates shift the characteristic temperatures toward lower values without having a significant effect on the amount of released latent heat.



Materials Science Forum (Volumes 539-543)

Main Theme:

Edited by:

T. Chandra, K. Tsuzaki, M. Militzer , C. Ravindran




M. B. Djurdjevic et al., "The Effect of Chemistry and Cooling Rate on the Latent Heat Released during the Solidification of the 3XX Series of Aluminum Alloys", Materials Science Forum, Vols. 539-543, pp. 299-304, 2007

Online since:

March 2007




[1] Mondolfo, L. F., Aluminum Alloys, Structure and Properties", Butterworth, s, London, 1979, p.213/614.

[2] Tenekedjiev, N., Mulazimoglu, H., Closset, B. and Gruzleski, J., Microstructures and Thermal Analysis of Strontium-Treated Al-Si Alloys", American Foundrymen, s Society Inc., Des Plaines, Illinois, USA (1995).

[3] ASM Specialty Handbook, Aluminum and Aluminum Alloys; Edited by J. R. Davis, ASM International, The Materials Information Society: May (1994).

[4] Web site: http: /environmentalchemistry. com/yogi/periodic.

[5] Djurdjevic, M. B., Kierkus W. T., Byczynski, G., Stockwell, T., and Sokolowski, J. H., Modeling of Fraction Solid for the 319 Al - Alloy, AFS Transactions 99-14, 1999, pp.173-179.

[6] Bennon, W. D and Incropera F. P. A Continuum Model for Momentum, Heat and Species Transport in Binary Solid-Liquid Phase Change Systems, Int. J. Heat Mass Transfer, 30, 1987, pp.2161-2187.

DOI: 10.1016/0017-9310(87)90094-9

[7] Djurdjevic, M. B., Kierkus, W. T., Byczynski, G. E. and Sokolowski, J. H., Calculation of Liquidus Temperature for the Al 3XX Series of Alloys, AFS Transactions, 1998, v. 47, 143-147.

[8] Backerüd, L., Solidification Characteristics of Al Alloys, Vol. 2, AFS, Skanaluminium, (1991).

[9] Emadi, D., and Whiting, L., "Determination of Solidification Characteristics of Al-Si Alloys by Thermal Analysis, AFS Transactions 02-033, pp.1-12, (2002).

[10] Djurdjevic, M. B., Kasprzak, W., Kierkus, C. A., Kierkus, W. T., and Sokolowski, J. H., Quantification of Cu Enriched Phases in Synthetic 3XX Aluminum Alloys Using the Thermal Analysis Technique, AFS Transactions, 2001, v. 21, pp.1-12.

[11] Kierkus, W. T. and Sokolowski, J. H., Recent Advances in CCA: A New Method of Determining 'Baseline' Equation, AFS Transactions, v. 66, 1999, 161-167.

[12] http: /hypertextbook. com/physics/thermal/heat-latent.

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