Author : Milind S. Mokashi and Shailendra V. Dhanal

In this work an attempt has been made to study the tribological behavior of relatively new Ni-Mn-Al and Ni-Mn-Sn Magnetic shape memory alloys (MSMAs).These alloys were prepared by vacuum arc melting technique. The Vickers hardness values of both the samples were measured. From tribological test and alloy comparison it is found that the wear rate of the Ni-Mn-Al alloy was less than the Ni-Mn-Sn alloy for the same time span and load. The value of coefficient of friction was more in Ni-Mn-Al alloy than Ni-Mn-Sn alloy and increased with the distance or time whereas in Ni-Mn-Sn alloy it remained nearly constant over the time span. From Vickers hardness test it was observed that the hardness value of the Ni-Mn-Al alloy is more than that of Ni-Mn-Sn alloy.

Keywords: Tribology, MSMA, NiMnAl, NiMnSn, Pin on disc, Wear, Coefficient of friction, Frictional force

Article published in International Journal of Current Engineering and Technology, Vol.7, No.3 (June-2017)