All Title Author
Keywords Abstract


EDM Studies on Aluminum Alloy-Silicon Carbide Composites Developed by Vortex Technique and Pressure Die Casting

DOI: 10.4236/jmmce.2010.91007, PP. 79-88

Keywords: Aluminum Alloy, Silicon carbide, Die-casting, Electric Discharge Machining, Surface roughness.

Full-Text   Cite this paper   Add to My Lib

Abstract:

Aluminum based metal matrix composites (MMCs) offer potential for advanced structural applications when high specific strength and modulus, as well as good elevated temperature resistance, are important. In the present work, aluminum alloy-silicon carbide composites were developed using a new combination of vortex method and pressure die casting technique. Electrical Discharge Machining (EDM) studies were conducted on the aluminum alloy-silicon carbide composite work piece using a copper electrode in an Electrical Discharge Machine. The Material Removal Rate (MRR) and surface roughness of the work piece increases with an increase in the current. The MRR decreases with increase in the percent weight of silicon carbide. The surface finish of the machined work piece improves with percent weight of silicon carbide.

References

[1]  Baki Karam?s, M., and Fehmi Nair., 2008, “Effects of reinforcement particle size in MMCs on extrusion die wear”, Wear, Vol.265, pp.1741–1750.
[2]  Allison, J.E., and Cole, G.S., 1993, “Metal matrix composite in the automotive industry: opportunities and challenges”, JOM, January 1993, pp.19–24.
[3]  Jose Duarte Marafona and Arlindo Araujo, 2009, “Influence of workpiece hardness on EDM performance”, Int. J. Mach. Tool. Manu., Vol.49, pp.744–748.
[4]  Karthikeyan, R., Lakshmi Narayanan, P.R., and Naagarazan, R.S., 1999, “Mathematical modelling for electric discharge machining of aluminium–silicon carbide particulate composites”, J. Mater. Process. Tech., Vol.87, pp.59–63.
[5]  Sushant Dhar, Rajesh Purohit, Nishant Saini, Akhil Sharma and Hemath Kumar, G., 2007, “Mathematical modeling of electric discharge machining of cast Al–4Cu–6Si alloy–10 wt.% SiCp composites”, J. Mater. Process. Tech., Vol.194, pp.24–29
[6]  Lloyd, D.J., 1994, “Particle reinforced aluminum and magnesium matrix composite.” Int. Mater. Rev., Vol. 39, pp.1–23.
[7]  Surappa, M.K., and Rohatgi, P.K., 1981, “Preparation and properties of aluminium alloy ceramic particle composites”, J. Mater. Sci., Vol.16 , pp.983–993
[8]  Surappa, M.K., 2003, “Aluminium matrix composites: Challenges and opportunities”, Sadhana, Vol.28, pp.319–334.
[9]  Sornakumar, T., and Senthilkumar, A., 2008, “Machinability of bronze–alumina composite with tungsten carbide cutting tool insert”, J. Mater. Process. Tech., Vol.202, pp.402–405.
[10]  Unigovski, Ya.B., and Gutman, E.M., 1999, “Surface morphology of a die-cast Mg alloy”, Appl. Surf. Sci., Vol.153, pp.47–52
[11]  Tsoukalas, V.D., 2008, “Optimization of porosity formation in AlSi9Cu9 pressure die castings using genetic algorithm analysis”, Mater. Design, Vol.29, pp.2027–2033.
[12]  Tharumarajah, A., 2008, “Benchmarking aluminium die casting operations”, Resour. Conserv. Recy., Vol.52, pp.1185–1189.

Full-Text

comments powered by Disqus

Contact Us

service@oalib.com

QQ:3279437679

微信:OALib Journal