Table of Contents
ISRN Materials Science
Volume 2012, Article ID 374719, 5 pages
Research Article

T4 and T6 Treatment of 6061 Al-15 Vol. % SiCP Composite

1Department of Metallurgical & Materials Engineering, NITK, Surathkal 575025, India
2Department of Physics, NITK, Surathkal 575025, India

Received 29 September 2011; Accepted 18 October 2011

Academic Editor: E. J. Nassar

Copyright © 2012 S. Rajasekaran et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


Aging temperature history has profound effect on the mechanical and corrosion behavior of 6061 Al/SiC composite. In order to understand the effect of aging on the corrosion resistance, the natural and artificial aging behavior of 15 vol. % 6061 Al-SiCP composites was studied using the aging treatment and the Brinell hardness measurements. The aging curves for the composite (T6 treated) were determined at various aging temperatures such as room temperature, 140, 160, 180, 200, 220, and 240°C. According to the peak hardness variation with temperature profile, it is found that the composite is underaged at 140°C and 160°C. Peak aging takes place at 180°C. Overaging takes place at 200°C, 220°C, and 240°C. The natural aging characteristics of the composite (T4 treated) are also studied using the Brinell hardness measurements.