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HomeMaterials Science ForumMaterials Science Forum Vols. 730-732Thermal Parameters, Microstructure and Porosity...

Thermal Parameters, Microstructure and Porosity During Transient Solidification of Ternary Al–Cu–Si Alloys

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Abstract:

Solidification of ternary Al-Cu-Si alloys begins with the development of a complex dendritic network typified by primary (λ₁) and secondary (λ₂) dendrite arm spacings which depend on the chemical composition of the alloy and on the casting thermal parameters such as the growth rate and the cooling rate. These thermal parameters control the scale of dendritic arms, the size and distribution of porosity and intermetallic particles in the casting. In this paper, λ₁ and λ₂were correlated with experimental thermal parameters i.e., the tip growth rate and the tip cooling rate. The porosity profile along the casting length has also been experimentally determined. The volumetric fraction of pores increase with the increase in alloying Si and with the increase in Fe concentration at the regions close to the casting cooled surface.

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Advanced Materials Forum VI

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Periodical:

Materials Science Forum (Volumes 730-732)

Pages:

883-888

DOI:

https://doi.org/10.4028/www.scientific.net/MSF.730-732.883

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Online since:

November 2012

Authors:

Daniel J. Moutinho, Laércio G. Gomes, Otávio L. Rocha, Ivaldo L. Ferreira, Amauri Garcia

Keywords:

Microstructure, Porosity, Solidification, Ternary Al-Cu-Si Alloys

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© 2013 Trans Tech Publications Ltd. All Rights Reserved

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[1] M. Zeren, J. Mater. Proc. Technol.Vol.169 (2005) p.292.

[2] P. Riani, K. Sufryd, G. Cacciamani, Intermetallics Vol.17 (2009) p.154.

[3] Z. Li, A.M. Samuel, F.H. Samuel, C. Ravindran, S. Valtierra, H.W. Doty, Mater. Sci. Eng. A Vol. 367 (2004) p.96.

[4] A.J. Griffin, Impedance spectroscopy response of aluminum-copper-silicon alloys, PhD Thesis, Rice University, 1991.

[5] D Zhang, J. Peng, T. Liu, Mater. Sci. Eng. A Vol. 425 (2006) p.78.

[6] W. Kurz, J. D. Fisher. Acta Metall. Vol. 29 (1981) p.11.

[7] R. Trivedi. Metall. Mater. Trans. A Vol. A15 (1984) p.977.

[8] J. D. Hunt, S. Z. Lu. Metall. Mater. Trans. A Vol. A27 (1996), p.611.

[9] P. D. Lee, R. C. Chirazi, R. C. Atwood, W. Wang. Acta Mater. Vol 51 (2003), p.5447.

[10] V.R. Voller. Can. Metall. Quarterly Vol. 37 (1998) p.169.

[11] C.R. Swaminathan, V. R. Voller. Int. J. Heat Mass Transfer Vol. 40 (1997) p.2859.

[12] C.Y. Wang, C. Berckermann. Metall. Trans. Vol. 24 (1993) p.2787.

[13] I.L. Ferreira, B. Nestler, A. Garcia. Scripta Mater. Vol. 50 (2004), p.407.

[14] I.L. Ferreira, D.J. Moutinho, L.G. Gomes, O.L. Rocha, A. Garcia, Phil. Mag. Lett. Vol. 89 (2009) p.769.

[15] I.L. Ferreira, J.F.C. Lins, D.J. Moutinho, L.G. Gomes, A. Garcia, J. Alloys Compd. Vol. 503 (2010) p.31.

[16] M. Easton, C. Davidson, D. St John, Metall. Mater. Trans. A Vol. 41 (2010) p.1528.

[17] A.P. Boeira, I.L. Ferreira, A. Garcia, Mater. Des. Vol. 30 (2009) p.2090.

[18] K.S. Cruz, E.S. Meza, F.A.P. Fernandes, J.M.V. Quaresma, L.C. Casteletti, A. Garcia, Metall. Mater. Trans. A Vol. 41 (2010) p.972.

[19] M.Gündüz , E. Çadirli, Mater Sci Eng A Vol. 327 (2002) p.167.

[20] S.T. McClain, A.S. McClain, J.T. Berry, AFS Trans. Vol. 109 (2001) p.321.

[21] O.L. Rocha, C. A. Siqueira, A. Garcia. Metall. Mater. Trans. A Vol. 34 (2003) p.995.

[22] J.A. Taylor, G.B. Schaffer, D.H. StJohn, Metall. Mater. Trans. A Vol.30 (1999) p.1657.