Cooling Curve Analysis of A356 Alloy by Conventional Casting and the Effect of Stirring

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Abstract:

The present investigation attempted to explore the effect of stirring during solidification of Aluminum A356 alloy, mainly focusing on the change from dendrite to globular structure. For this purpose samples of A356 alloy were melted in the electrical resistance furnace and cooling curves were recorded for each level agitation. The experimental curves were numerically processed by calculating first and second derivatives. From these were determined temperatures and times of start nucleation of alpha solid and eutectic reaction.

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Solid State Phenomena (Volume 327)

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300-305

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January 2022

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© 2022 Trans Tech Publications Ltd. All Rights Reserved

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[1] A. Pola, M. Tocci, P. Kapranos, Microstructure and properties of semisolid aluminum alloys: A literature Review. Metals 2018 8 (3), 181.

DOI: 10.3390/met8030181

Google Scholar

[2] Midson, S. Rheocasting processes for semi-solid casting of aluminum alloys. Die Cast. Eng. (2006), 50, 48–51.

Google Scholar

[3] Nafisi, S.; Ghomashchi, R. Semi-Solid Processing of Aluminum Alloys; Springer: Berlin, Germany, (2016).

Google Scholar

[4] Yucel Birol Solid fraction analysis with DSC in semi.solid metal processing. Journal of alloys and compounds 486(2009) 173-177.

DOI: 10.1016/j.jallcom.2009.06.165

Google Scholar

[5] X. Chen, W. Kasprzak, J.H. Sokolowski, Reduction of the heat treatment process for the Al-based alloys by utilization of heat from solidification process, Journal of Materials Processing Technology 176 (2006) 24-31.

DOI: 10.1016/j.jmatprotec.2005.11.034

Google Scholar

[6] D. Emadi, L.V. Withing, Determination of solidification characteristics of Al–Si alloys by thermal analysis, AFS Trans. 110 (2002) 285 296.

Google Scholar

[7] M. Kiuchi, S. Sugiyama, Proceedings of the 4th International Conference on Semi-Solid Processing of Alloys and Composites, Sheffield, England, 1996, p.278.

Google Scholar

[8] Malekan M, Shabestari SG. Computer-aided cooling curve thermal analysis used to predict the quality of aluminum alloys. J Therm Anal Calorim. (2011) 103, 453–8.

DOI: 10.1007/s10973-010-1023-2

Google Scholar

[9] Nafisi S, Ghomashchi R. Grain refining of conventional and semisolid A356 Al–Si alloy. J Mater Process Technol. (2006), 174, 371–83.

DOI: 10.1016/j.jmatprotec.2006.02.012

Google Scholar

[10] Wen, W. Hu and G. Gottstein, Intermetallic compounds in thixoformed aluminium alloy A356. Materials Science and Technology (2003) 19, 762-768.

DOI: 10.1179/026708303225002839

Google Scholar

[11] Flemings, M.C. Behavior of metal alloys in the semisolid state. Metall. Trans. A. (1991), 22, 957–981.

DOI: 10.1007/bf02661090

Google Scholar

[12] Doherty, R.D.; Lee, H.-I.; Feest, E.A. Microstructure of stir-cast metals. Mater. Sci. Eng. (1984), 65, 181–189.

DOI: 10.1016/0025-5416(84)90211-8

Google Scholar

[13] Loué, W.R.; Suéry, M. Microstructural evolution during partial remelting of Al-Si7Mg alloys. Mater. Sci. Eng. A. (1995), 203, 1–13.

DOI: 10.1016/0921-5093(95)09861-5

Google Scholar

[14] Molenaar, J.M.M.; Katgerman, L.; Kool, W.H.; Smeulders, R.J. On the formation of the stircast structure. J. Mater. Sci. (1986), 21, 389–394.

DOI: 10.1007/bf01145499

Google Scholar

[15] Vogel, A.; Doherty, R.D.; Cantor, B. Stir-cast microstructure and slow crack growth. In Solidification and Casting of Metals: Proceedings of an International Conference on Solidification; Metals Society: London, UK, (1979); p.518.

Google Scholar