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Retracted

This paper has been retracted as it contains figures that are substantially similar to figures in the following published papers: (1) “Microstructure and Mechanical Properties of A356/SiC Composites Fabricated by Electromagnetic Stir Casting” by Shashi Prakash Dwivedi, Satpal Sharma, and Raghvendra Kumar Mishra, (2) “Effects of roller burnishing process parameters on surface roughness of A356/5%SiC composite using response surface methodology” by Shashi Prakash Dwivedi, Satpal Sharma, and Raghvendra Kumar Mishra.

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References

  1. S. P. Dwivedi, S. Sharma, and R. K. Mishra, “Comparison of microstructure and mechanical properties of A356/SiC metal matrix composites produced by two different melting routes,” International Journal of Manufacturing Engineering, vol. 2014, Article ID 747865, 13 pages, 2014.
International Journal of Manufacturing Engineering
Volume 2014, Article ID 747865, 13 pages
http://dx.doi.org/10.1155/2014/747865
Research Article

Comparison of Microstructure and Mechanical Properties of A356/SiC Metal Matrix Composites Produced by Two Different Melting Routes

1Noida Institute of Engineering and Technology, Greater Noida, Gautam Buddha Nagar, Uttar Pradesh 201310, India
2School of Engineering, Gautam Buddha University, Greater Noida, Gautam Buddha Nagar, Uttar Pradesh 201310, India

Received 14 June 2014; Revised 1 October 2014; Accepted 2 October 2014; Published 21 October 2014

Academic Editor: Shia-Chung Chen

Copyright © 2014 Shashi Prakash Dwivedi 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.

Abstract

A356/SiC metal matrix composites with different weight percent of SiC particles were fabricated by two different techniques such as mechanical stir casting and electromagnetic stir casting. The results of macrostructure, microstructure, and XRD study revealed uniform distribution, grain refinement, and low porosity in electromagnetic stir casing samples. The mechanical results showed that the addition of SiC particles led to the improvement in tensile strength, hardness, toughness, and fatigue life. It indicates that type of fabrication process and percentage of reinforcement are the effective factors influencing the mechanical properties. It is observed that when percentage of reinforcement increases in electromagnetic stir casting, best mechanical properties are obtained.