Optimization of process variables on Electrical Discharge Machining of novel Al7010/B₄C/BN hybrid metal matrix nanocomposite

¹ Panchayat Raj Engineering Department, Andhra Pradesh, India
² Department of Mechanical Engineering, Sri Sivani College of Engineering, Etcherla, India
³ Department of Mechanical Engineering, Lakireddy Balireddy College of Engineering (A), Mylavaram, India
⁴ Department of Electronics and Communication Engineering, DVR & Dr. HS MIC College of Technology (A), Kanchikacharla, India
⁵ Department of Mechanical Enginnering, IIT Delhi india
⁶ Gokaraju Rangaraju Institute of Engineering and Technology, Hyderabad, India

^* Corresponding author: dchandu310@gmail.com

Abstract

In this paper, determination of optimum EDM input variables like discharge current (DC), pulse on time (Pon), pulse off time (Poff), and gap voltage (GV) on responses like material removal rate (MRR) and surface roughness (SR) using Taguchi technique on the novel Al7010/2%B₄C/2%BN hybrid metal matrix nanocomposite (HMMNC) manufactured through ultrasonic assisted stir casting (UASC) route. The various experiments were planned and carried out L₁₆ orthogonal array and regression equations were established by using Analysis of variance (ANOVA) to examine the impact of pulse factors. The outcomes exposed that discharge current greatest effect factor on MRR and SR was found with % contribution of 82.07% and 86.86%. It is also identified that the optimum level conditions of pulse factors for MRR and SR is A₄B₄C₁D₁ and A₁B₁C₄D₄. The outcomes were further determined by utilizing confirmatory experiment. The machined surface morphology was observed through Scanning electron microscope (SEM).