Manufacturing Technology Today

V. Senthilkumar ¹, K. Thangadurai ², A. Asha ³

Affiliations
1 Dept. of Production Engg., National Institute of Technology, Trichy, IN
2 Dept. of Mech. Engg., Jayaram College of Engineering & Technology, Trichy, IN
3 Dept. of Mech. Engg., KLN College of Engineering & Technology, Sivagangai, IN

Abstract

Nowadays modern manufacturing system is enforced to find out the new material such as metal matrix composite or ceramic matrix composite. The aim of this research is to invent the aluminium based metal matrix composite such as 80% of Al 6061-20% of SiC and 90% of Al 6061-10% of SiC. The aluminum 6061 alloy based composite is prepared through stir casting route. Then the composite is heat treated at the critical temperature. After heat treatment, the mechanical properties of composite are compared before extrusion and after heat treatment. Mechanical properties of both heat-treated and as fabricated composites showed a high dependence on the ceramic content. The yield, ultimate tensile strength, and the elastic modulus of the material were increased with volume fraction of carbide, whereas the ductility was decreased. The tensile properties are seen to vary significantly with ageing treatment. The highest strengths were obtained for the solution heat-treated and naturally aged Al-6061: SiC composites containing 20 vol. % SiC.

Keywords

Plastic Deformation, Metal Matrix Composite, Microstructure.

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K. Thangadurai ¹, J. Jerald ¹, P. Satheesh ¹, R. Saravanan ²

Affiliations
1 School of Mechanical Engineering, Shanmugha Arts, Science, Technology & Research Academy, Thanjavur - 613 402, IN
2 Department of Mechanical Engineering, J.J. College of Engineering, Tiruchirappalli-620 009, IN

Abstract

Wire Electric Discharge Machining process is one of the important nontraditional machining process which is used to machine hard materials, complex shapes and contours which are difficult by conventional methods. In this paper Particle Swarm Optimization (PSO) and Memetic Algorithm (MA) based optimization procedures have been developed to optimize machining parameters viz machining speed, pulse on time, pulse off time, and peak current by using two response equations for material removal rate and surface roughness. The objective function considered for optimization is maximization of material removal rate and minimization of surface roughness. Here objective function is solved by taking combined objective function (weightage given 50% to material removal rate and 50% to surface roughness) i.e. minimization of material removal rate and surface roughness. The output results o f these two algorithms are compared.

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