Investigation of the Common Modification Effect of Strontium and Antimony on the Structure in Case of Al-Si Alloy

Article Preview

Abstract:

In the course of our investigations, AlSi8Cu3 foundry alloy was alloyed in different strontium and antimony concentrations. The mechanical properties of structure developed during the given cooling conditions as well as the effect of strontium and antimony on the modification of eutectic Si were investigated by a computer image analysis and by using a scanning electron microscope. Samples with a wall-thickness of 8 mm cast in the course of the experiment-series were used for our investigations. A part of our long-term research work is described in our present paper.

You might also be interested in these eBooks

Info:

Periodical:

Pages:

393-398

Citation:

Online since:

February 2015

Export:

Price:

Permissions CCC:

Permissions PLS:

Сopyright:

© 2015 Trans Tech Publications Ltd. All Rights Reserved

Share:

Citation:

* - Corresponding Author

[1] A.K. Dahle, K. Nogita, S.D. McDonald, C. Dinnis, L. Luc: Eutectic modification and microstructure development in Al-Si alloys, Materials Science and Engineering, A413-414(2005)243-248.

DOI: 10.1016/j.msea.2005.09.055

Google Scholar

[2] N. Fatahalla, M. Hazif, M. Abdulkhalek: Effect of microstructure on the mechanical properties and fracture of commercial hypoeutectis Al-Si alloy modified with Na, Sb and Sr, Journal of Materials Science, 34(1999)3555-3564.

DOI: 10.1023/a:1004626425326

Google Scholar

[3] J.G. Kaufman, E.L. Rooy: Aluminium alloy castings properties, processes and applications, ASM International, ISBN: 0-87170-803-5, (2005).

Google Scholar

[4] M.G. Day, A. Hellawell: The microstructure and crystallography of aluminium-silicon eutectic alloys, Proceedings of the Royal Society A 305 (1968) 473–491.

Google Scholar

[5] S.Z. Lu, A. Hellawell: The mechanism of silicon modification in aluminum-silicon alloys: impurity induced twinning, Metallurgical and Materials Transactions A-Physical Metallurgy and MaterialsScience 18(1987) 1721–1733.

DOI: 10.1007/bf02646204

Google Scholar

[6] M. Timpel, N. Wanderka, R. Schlesiger, T. Yamamoto, T. Isheim, G. Schmitz: Sr-Al-Si co-segregated regions in eutectic Si-phase of Sr-modified, Ultramicroscopy, 132(2013)216-221.

DOI: 10.1016/j.ultramic.2012.10.006

Google Scholar

[7] Z. Gácsi: The application of digital image processing for materials science, Materials Science Forum, Vol. 414-415, pp.213-220., (2003).

DOI: 10.4028/www.scientific.net/msf.414-415.213

Google Scholar

[8] M. Djurdjevic, H. Jiang, J. Sokolowski: On-line prediction of aluminium-silicon eutectic modification level using thermal analysis, Materials Characterization - Elsevier, 46(2001)31-38.

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

Google Scholar