Paper Titles
NiAl Oxidation and Corrosion Resistant Coatings Obtained by Thermal Spraying
p.273
The Influence of the Metal Head on the HTC Evolution in the Sand Casting of A357
p.279
Obtaining of Ni Base Intermetallic Alloys by Solidification Control
p.283
Inoculating Influence of Re-Carburizers in Grey Cast Iron
p.287
Influence of Magnesium on Structure and Properties of Al-Si Alloy
p.291
New Quaternary Type of Al-Sr-Ti-B Master Alloy for Grain Refining and Modifying of Al-Si
p.295
Studies Regarding the Hardness and Microhardness of Al-Si Alloys Solidified in Ultrasound Field
p.299
High Potency Late Inoculation of Grey Cast Iron
p.303
Undesirable Graphite Morphologies Incidence in Inoculated Grey Irons
p.307

Influence of Magnesium on Structure and Properties of Al-Si Alloy

Article Preview

Abstract:

Aluminium-silicon alloys have low density, high electrical and thermal conductivity and high resistance to corrosion at ambient temperature. However, these alloys usually contain numerous alloying and impurity elements, which consist essentially of a fairly ductile matrix of alpha aluminium solid solution with a variety of non-ductile particles of silicon and various intermetallic compounds. The shape and distribution of these constituents largely control the deformation behaviour of the alloy. The addition of magnesium makes the alloys lighter and harder, but its hardening effect is fully responsive only after proper heat treatment. Therefore, in the present study, microstructures and properties of the alloys have been evaluated on the as-cast and heattreated conditions. Results show that the addition of magnesium to aluminium-silicon eutectic base alloy refines microstructure up to certain level and increases the strength and hardness at the expense of ductility.

You might also be interested in these eBooks
Materials and Technologies (4th MATEHN) View Preview

Info:

Periodical:

Advanced Materials Research (Volume 23)

Pages:

291-294

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.23.291

Citation:

Cite this paper

Online since:

October 2007

Authors:

Mohammad M. Haque, Ahsan Ali Khan

Keywords:

Deformation, Eutectic, Intermetallic, Non-Ductile, Thermal

Export:

RIS, BibTeX

Price:

Permissions CCC:

Request Permissions

Permissions PLS:

Request Permissions

Сopyright:

© 2007 Trans Tech Publications Ltd. All Rights Reserved

Share:

Citation:

References

[1] I. J. Polmear, Light Alloys: Metallurgy of Light Metals, Halsted Press, 3rd Edition, (1995), p.183.

Google Scholar

[2] R. F. Smart, Metallurgical Aspects of Al-Si Eutectic Piston Alloys, British Foundryman, (1971), Vol. 64, p.430.

Google Scholar

[3] E.V. Dewhirst, British Foundryman, (1966), Vol. 59, p.1.

Google Scholar

[4] M. M. Haque and M. A. Maleque, J. Materials Processing Technology, (1998), Vol. 77, p.122.

Google Scholar

[5] J. A. Schey, Introduction to Manufacturing Processes, McGraw Hill Co. Ltd., 3 rd. Edition, (2000), p.201.

Google Scholar

[6] T. Yasmin, A. A. Khalid and M. M. Haque, J. Materials Processing Technology, (2004), Vol. 153-154, p.833.

Google Scholar

[7] C. B. Kim and R. W. Heine, J. Inst. Metals, (1963-64), Vol. 92, p.367.

Google Scholar

[8] W. A. Bailey, Foundry, (1964), Vol. 92, No. 5, p.54.

Google Scholar

[9] A. T. Joenoes and J. E. Gruzleski, Cast Metals, (1991), Vol. 4, No. 2, p.62.

Google Scholar

[10] J. Campbell, Proc. of the 66 th World Foundry Congress, Istanbul, Turkey, Vol. 1, (2004), p.33.

Google Scholar