International Research Journal of Engineering and Technology (IRJET) e-ISSN: 2395 -0056 Volume: 03 Issue: 01 | Jan-2016 www.irjet.net p-ISSN: 2395-0072 © 2016, IRJET ISO 9001:2008 Certified Journal Page 219 Influence of process parameters in machining the Hybrid Aluminum metal matrix composites in wire cut EDM-An Experimental investigation G.Ramesh a , V.C.Uvaraja b , M.S.Sampathkumar c a Department of Mechanical Engineering, Velammal Engg College,Chennai, India b Department of Mechanical Engineering, Banariamman Institute of Technology, Sathyamangalam, Erode, India. c Department of Mechanical Engineering ,Excel college of Engg, Erode. Corresponding Author a G.Ramesh , Department of Mechanical Engineering, Velammal Engg College,Chennai. Email id: gramesh_me@ yahoo.co.in Abstract: The composite materials are extensively used globally in major industries. It is very difficult to machine the metal matrix composite materials impeded with reinforcement by conventional machining methods. Hence non conventional machining techniques are employed to overcome these difficulties. Wire Electrical discharge machining (WEDM) shows higher capability for cutting complex shapes with high precision for these materials. In this present work the effect of process parameter of Wire Electrical discharge machining such as Voltage, Pulse on- time , pulse -off time and current were studied for the reinforced metal matrix composite and hybrid aluminum metal matrix composites(HAMMCs). Aluminum 7075 reinforced with Silicon carbide (SiC) and boron carbide (B4C) are fabricated using stir