El Mahallawi, I., Shash, Y., Rashad, R., Abdelkader, H., Shehata, L., Abdelaziz, M., Amer, A., Mayer, J., Schwedt, A. (2012). ENHANCING PROPERTIES OF CAST AL ALLOYS BY RHEOCASTING AND NANO-DISPERSIONS. test, 15(15th International Conference on Applied Mechanics and Mechanical Engineering.), 1-18. doi: 10.21608/amme.2012.36930
I. El Mahallawi; Y. Shash; R. Rashad; H. Abdelkader; L. Shehata; M. H. Abdelaziz; A. Amer; J. Mayer; A. Schwedt. "ENHANCING PROPERTIES OF CAST AL ALLOYS BY RHEOCASTING AND NANO-DISPERSIONS". test, 15, 15th International Conference on Applied Mechanics and Mechanical Engineering., 2012, 1-18. doi: 10.21608/amme.2012.36930
El Mahallawi, I., Shash, Y., Rashad, R., Abdelkader, H., Shehata, L., Abdelaziz, M., Amer, A., Mayer, J., Schwedt, A. (2012). 'ENHANCING PROPERTIES OF CAST AL ALLOYS BY RHEOCASTING AND NANO-DISPERSIONS', test, 15(15th International Conference on Applied Mechanics and Mechanical Engineering.), pp. 1-18. doi: 10.21608/amme.2012.36930
El Mahallawi, I., Shash, Y., Rashad, R., Abdelkader, H., Shehata, L., Abdelaziz, M., Amer, A., Mayer, J., Schwedt, A. ENHANCING PROPERTIES OF CAST AL ALLOYS BY RHEOCASTING AND NANO-DISPERSIONS. test, 2012; 15(15th International Conference on Applied Mechanics and Mechanical Engineering.): 1-18. doi: 10.21608/amme.2012.36930

ENHANCING PROPERTIES OF CAST AL ALLOYS BY RHEOCASTING AND NANO-DISPERSIONS

The International Conference on Applied Mechanics and Mechanical Engineering
Article 29, Volume 15, 15th International Conference on Applied Mechanics and Mechanical Engineering., May 2012, Pages 1-18    PDF (4.58 M)
Document Type: Original Article
DOI: 10.21608/amme.2012.36930
Authors
I. El Mahallawi1; Y. Shash1; R. Rashad1; H. Abdelkader2; L. Shehata3; M. H. Abdelaziz4; A. Amer5; J. Mayer5; A. Schwedt6
1Prof., Faculty of Engineering, Cairo University.
2Faculty of Engineering, Helwan University.
3Lecturer, Ministry of Military Production.
4Graduate student, British University in Egypt.
5Graduate student, Ministry of Military Production.
6Prof., Aachen University, Germany.
Abstract
ABSTRACT
In this work a number of cast samples of A356 and A390 were prepared by rheocasting
in a specially designed and built furnace unit allowing for the addition of the
nano-particles into the molten Al-Si alloy with mechanical stirring. The microstructure
features and the mechanical properties of the cast samples were investigated, as
well as resistance to wear and corrosion in laboratory tests.
The results obtained in this work showed improved wear and corrosion resistance of
the nano-dispersed hypereutectic A390 alloys, as well as enhancement in the
mechanical strength of the nano-dispersed hypoeutectic A356 alloys, accompanied
by significant increase in the elongation percentage, supported by evidence of
refined dendrite arms length, and inter-lamellar spacing. The work also shows
significant enhancement in the wear and corrosion performance of the nanodispersed
alloys.
Keywords
Cast AlSi alloys; rheo-casting; nano-dispersions
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