Table of Contents
Journal of Powder Technology
Volume 2013 (2013), Article ID 183713, 14 pages
http://dx.doi.org/10.1155/2013/183713
Research Article

Investigations into Deformation Characteristics during Open-Die Forging of SiCp Reinforced Aluminium Metal Matrix Composites

1School of Mechanical Engineering, KIIT University, Bhubaneswar 751024, Odisha, India
2Research Scholar, IIT Kharagpur, Paschim Midnapur, West Bengal 721302, India

Received 27 March 2013; Accepted 23 August 2013

Academic Editor: Thierry Barriere

Copyright © 2013 Deep Verma 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

The deformation characteristics during open-die forging of silicon carbide particulate reinforced aluminium metal matrix composites (SiCp AMC) at cold conditions are investigated. The material was fabricated by liquid stir casting method in which preheated SiC particles were mixed with molten LM6 aluminium casting alloy and casted in the silicon mould. Finally, preforms obtained were machined in required dimensions. Two separate cases of deformation, that is, open-die forging of solid disc and solid rectangular preforms, were considered. Both upper bound theoretical analysis and experimental investigations were performed followed by finite element simulation using DEFORM, considering composite interfacial friction law, barreling of preform vertical sides, and inertia effects, that is, effect of die velocity on various deformation characteristics like effective stress, strain, strain rate, forging load, energy dissipations, and height reduction. Results have been presented graphically and critically investigated to evaluate the concurrence among theoretical, experimental, and finite element based computational findings.