Investigate the Tribological Properties of AISI 4140 Alloy Steel Under Various Loads and Sliding Speed

Abstract

Abstract Friction and wear are the main reason for energy losses in the mechanical systems. AISI 4140 is commonly use as gear material and other important applications. In this study experiments were conducted to predict the effect of the sliding speed and load on the frictional and wear behavior of AISI 4140 steel under the HP ZFL 80W-90 using a pin on disc tribometer. The tests were carried out under different loads (40,60,80) N and (0.5,1,1.5) m/s sliding speeds for constant distance of 500m. The tribological characteristic of the material was observed at different sliding speed. Based on the results, the wear mechanism of the AISI 4140 under HP ZFL 80W-90 lubricant was predicted. Results depicted that at low sliding speed the COF coefficient of friction decreases with increase in load. At moderate sliding speed also same trend was observed, whereas at higher sliding speed the COF increases with the increase of load.