Investigation of Machining Rate and Tool Wear in Processing of Fe-Based-SMA Through Sinking EDM

Abstract

Shape memory alloys (SMAs) is one of the category of advanced materials which have the ability to memorize their shape when treated upto particular conditions of temperature. SMAs have numerous applications in the field of biomedical, automotive, aerospace, robotics and industrial sector. SMAs have spotted to be the alloys having superior and unique properties having commercial applications. SMAs are basically classified into three types Ni-based, Cu-based and Fe-based. Fe-based SMAs is an important class of shape memory alloys having applications in pipe joint for steel pipes, fishplate for crane rail and in other structural materials. It is an inexpensive alloy as compare to other SMAs, due to this these alloys are used as commercial production of stainless steel in industry. The non-conventional machining of Fe-based SMA is an area of future concern which is going to be explore in this paper. In this article the effect of various process parameters on material removal and tool wear rate has been studied while performing Electrical discharge machining operation on Fe-based SMA. Pulse on time and Pulse off time are the major influential process parameters impacting the MRR and TWR than the other two parameters i.e. peak current and gap voltage.