Abstract—The object of the present work is to investigate the effect of microstructure and operational parameters of normal pressure from 0.1249 to 0.8743 MPa with varying sliding speeds from 1 to 7 m/s for a sliding distance of 10,000 meters under unlubricated conditions of hypereutectoid steel on volumetric wear rate by Pin-on-disk wear tests type m/c in moist air was studied. Experimental results have shown that the microstructure of combined phases like cementite and pearlite gives better wear resistance than other phases under low operational conditions. The combined phases of cementite and martensite gives better wear resistance than other phases under high operational conditions. Also observed that, the volumetric wear rate of 1.5 wt % C of 100% martensite steels is low wear rate for all the operational conditions. SEM observation of the worn surface showed that three body and surface delamination were the dominant sliding wear mechanisms.

Index Terms—Hypereutectoid steel, Microstructure, Normal pressure, Sliding speed

Cite: Sharanabasappa M, V R Kabadi, P B Shetty, and Veerabhadrappa Algur, "Dry Sliding Wear Behaviour of Hypereutectoid Steel under the Influence of Microstructures, Sliding Speeds and Normal Pressures," International Journal of Mechanical Engineering and Robotics Research, Vol.4, No. 2, pp. 60-71, April 2015.