Title: Investigation of mechanical, morphological studies and electrochemical micro holing process parameters on Al6061-SiC-Gr hybrid metal matrix composites
Authors: P. Satishkumar; N. Natarajan; S. Dharmalingam; P. Pitchandi
Addresses: Department of Mechanical Engineering, JCT College of Engineering and Technology, Anna University, Pichanur, Coimbatore – 641105, Tamil Nadu, India ' Department of Mechanical Engineering, Muthayammal Engineering College, Rasipuram, Namakkal, Tamil Nadu, India ' Department of Mechanical Engineering, Dhanalakshmi Srinivasan College of Engineering, Coimbatore, Tamil Nadu, India ' Department of Mechanical Engineering, JCT College of Engineering and Technology, Coimbatore, Tamil Nadu, India
Abstract: This paper investigates a methodology for the optimisation of the electrochemical machining parameters on micro holing of Al6061+ (6wt % SiC + 4wt % Gr) hybrid composites. The analysis of variance and Taguchi methodology (L27 orthogonal array) are used to study the influence of ECMM machining parameters such as frequency, machining voltage, electrolyte concentration, on the MRR and OC. In this present work Al6061 is taken as main matrix material combined with silicon carbide and graphite of size 15-30 μm. Composite materials Al6061 + 6wt % SiC, Al6061+ 4wt % Gr and hybrid composite material Al6061 + (6wt % SiC + 4wt % Gr) is achieved by a stir casting method. The ductility and strength of this material was increased by using stir casting method with combined SiC. The microstructure of this system reveals the distribution of SiC and Gr in the matrix system.
Keywords: Al6061; graphite; silicon carbide; stir casting; ECMM; electrochemical micromachining; mechanical properties; MRR; material removal rate; OC; overcut; Taguchi methodology.
International Journal of Heavy Vehicle Systems, 2018 Vol.25 No.3/4, pp.430 - 441
Received: 16 Nov 2017
Accepted: 05 Dec 2017
Published online: 24 Sep 2018 *