Available online at www.sciencedirect.com ScienceDirect Materials Today: Proceedings 18 (2019) 5141–5150 www.materialstoday.com/proceedings 2214-7853 © 2019 Elsevier Ltd. All rights reserved. Selection and peer-review under responsibility of the 9th International Conference of Materials Processing and Characterization, ICMPC-2019 ICMPC-2019 A Concise Review on Machinability of NiTi Shape Memory Alloys Barsharani Dash a , Manojit Das a ,Monalisa Das b , Trupti R Mahapatra a *,Debadutta Mishra a a Department of Production Engineering, Veer Surendra Sai University of Technology (VSSUT), Burla – 768018, India b Department of Orthodontics and Dentofacial Orthopaedics, Hi-Tech Dental College and Hospital, Bhubaneswar-751025,India Abstract Shape memory alloy (SMA) is used in various industries such as robotics, sensor, actuators, energy conversion, biomedical and aerospace. In conventional machining (where the tool and work piece are in contact) of SMAs, it has been noticed that the properties and shape of the material change due to heat generation and thus poor surface finish, high cutting force, greater tool wear is marked. Consequently, non-contact type nonconventional machining processes, for instance Laser, electro-discharge (EDM) and electrochemical (ECM) machining have become inevitable for machining of SMAs. Though, non-conventional processes have advantages over traditional machining and confirm better machinability but each of them has certain limitations as well. The motive of the present paper is to briefly review the challenges and opportunities relating to the conventional as well as the nonconventional machining of the SMAs (nickel-titanium (Nitinol) in particular). The input parameters and performance measures reported in open literature on the machining of SMA material have been discussed. Moreover, a selection of diverse optimization techniques adopted in this domination for predicting optimized responses is also abridged. © 2019 Elsevier Ltd. All rights reserved. Selection and peer-review under responsibility of the 9th International Conference of Materials Processing and Characterization, ICMPC-2019 Keywords: Shape Memory Alloys, Machinability, Optimization, Applications. 1. Introduction: Materials capable of regaining and withstanding large strains devoid of invariable plastic deformation and remember the last configuration to recover the principal shape with varying temperature are class of smart materials denominated as shape memory alloy (SMA) [1]. Among several SMA, nickel–titanium (NiTi) alloys are prevalent in medical (sunglass frames, orthopedic implants, orthodontic clips, guide wires, blood filters, surgical * Corresponding author. Tel.: +91-9861425597; fax: +91-6632430204 E-mail address: trmahapatra_pe@vssut.ac.in