Available online at www.sciencedirect.com ScienceDirect Materials Today: Proceedings 5 (2018) 19303–19312 www.materialstoday.com/proceedings 2214-7853 © 2018 Elsevier Ltd. All rights reserved. Selection and/or Peer-review under responsibility of Materials Processing and characterization. ICMPC_2018 Analysis of Wire EDM Process Parameters in Machining of NiTi Superelastic Alloy Vinayak N Kulkarni * , V. N. Gaitonde, Viranna Hadimani, Vasant Aiholi School of Mechanical Engineering, KLE Technological University, Hubballi-580031, Karnataka, India Abstract Nickel-Titanium (NiTi) alloys are difficult to machine materials because of their superelastic and shape memory properties. The present work focuses on study of effects of different input parameters of wire electric discharge machining on output responses like surface roughness and material removal rate during machining of NiTi alloys. The various concepts of design of experiments have been used for planning the experiments, developing the models and for investigating the influence of parameters on performance measures. The results indicate that the pulse on time and spark gap set voltage are predominant factors in maximizing material removal rate and minimizing surface roughness. © 2018 Elsevier Ltd. All rights reserved. Selection and/or Peer-review under responsibility of Materials Processing and characterization. Keywords: Nickel-Titanium; Superelastic alloy; Shape memory; Design of Experiments ; Surface roughness; Material removal rate. 1. Introduction The recent trends in medical applications have evolved the use of superelastic alloy and smart materials. Such an alloy is Nickel-Titanium (NiTi) superelastic alloy (SEA) or shape memory alloy (SMA), which is used in orthopedics, orthodontics, cardiovascular surgery and related bio-engineering applications [1]. The NiTi superelastic alloy possess superior properties such as pseudoelasticity (PE) or superelasticity (SE), shape memory effect (SME), corrosion resistance, wear resistance, higher ductility and high fatigue strength, which leads to other applications in the field of aerospace and automotive industries [2-6]. Conventional machining of NiTi superelastic alloy is quite difficult due to higher cutting forces and wear resistance involved in the machining process. Therefore, in recent trends non-traditional machining methods are used in machining of these alloys. * Corresponding author. Tel.+91-9739146050 E-mail address: vinayak33me@gmail.com