Modification of Eutectic Si in Hypoeutectic Al-Si Alloys with Erbium Addition

Tanawat Tantiwaitayaphan; Phromphong Pandee; Chaowalit Limmaneevichitr

doi:10.4028/www.scientific.net/KEM.718.139

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HomeKey Engineering MaterialsKey Engineering Materials Vol. 718Modification of Eutectic Si in Hypoeutectic Al-Si...

Modification of Eutectic Si in Hypoeutectic Al-Si Alloys with Erbium Addition

Abstract:

Effect of erbium (Er) on the eutectic Si morphologies in hypoeutectic Al-Si based alloys was investigated using thermal analysis and microstructure examination. The microstructural observations show that the addition of Er causes significant modification of the eutectic silicon morphology from a coarse plate-like to a fine fibrous one. Furthermore, the results of thermal analysis reveal that the addition of Er decreased the temperatures of eutectic nucleation and growth, and increased the eutectic undercooling. The eutectic undercooling caused by the presence of Er plays an important role in the modification of eutectic silicon.

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Periodical:

Key Engineering Materials (Volume 718)

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139-142

DOI:

https://doi.org/10.4028/www.scientific.net/KEM.718.139

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Online since:

November 2016

Authors:

Tanawat Tantiwaitayaphan, Phromphong Pandee*, Chaowalit Limmaneevichitr

Keywords:

Eutectic Solidification, Microstructure, Rare Earth, Thermal Analysis

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References

[1] P. Pandee, C.M. Gourlay, S.A. Belyakov, R. Ozaki, H. Yasuda, C. Limmaneevichitr, Eutectic morphology of Al-7Si-0. 3Mg alloys with scandium additions, Metall. Mater. Trans. A. 45 (2014) 4549-4560.

DOI: 10.1007/s11661-014-2395-x

Google Scholar

[2] U. Patakham, J. Kajornchaiyakul, C. Limmaneevichitr, Modification mechanism of eutectic silicon in Al-6Si-0. 3Mg alloy with scandium, J. Alloys Compd. 575 (2013) 273-284.

DOI: 10.1016/j.jallcom.2013.05.139

Google Scholar

[3] A. Knuutinen, K. Nogita, S.D. McDonald, A.K. Dahle, Modification of Al-Si alloys with Ba, Ca, Y and Yb. J. Light. Met. (2001) 229-240.

DOI: 10.1016/s1471-5317(02)00004-4

Google Scholar

[4] J.H. Li, S. Suetsugu, Y. Tsunekawa, P. Schumacher, Refinement of eutectic Si phase in Al-5Si Alloys with Yb additions, Metall. Mater. Trans. A. 44 (2013) 669-681.

DOI: 10.1007/s11661-012-1410-3

Google Scholar

[5] JH. Li, P. Schumacher, Effect of Y addition and cooling rate on refinement of eutectic Si in Al-5 wt-%Si alloys, Int. J Cast. Metal. Res. 25 (2012) 347-357.

DOI: 10.1179/1743133612y.0000000039

Google Scholar

[6] M. Djurdjevic, H. Jiang, J. Sokolowski, On-line prediction of aluminum-silicon eutectic modification level using thermal analysis, Mater. Charact. 46 (2001) 31-38.

DOI: 10.1016/s1044-5803(00)00090-5

Google Scholar

[7] X. Chen, H. Geng, Y. Li, Study on the eutectic modification level of Al-7Si Alloy by computer aided recognition of thermal analysis cooling curves, Mat. Sci. Eng. A. Struct. A. 419 (2006) 283-289.

DOI: 10.1016/j.msea.2005.12.036

Google Scholar