• Veerabhadrappa Algur
• Mohan
• Dr. V R Kabadi
• Dr. C. Thotappa

The microstructure is prime importance affecting the wear of materials. Hypereutectoid steels contain 15 to 32% of iron carbide which is basically avoided by industries because of the brittleness. Three plain hypereutectoid steels 0.4, 0.9 and 1.5 % C steels heat treated and developed each Pearlite + Cementite (P+C), Martensite + Cementite (M+C) and fully Martensitic (M) microstructures. Wear tests have been conducted on these specimens under different operating conditions like normal pressures 0.1249, 0.3747, and 0.6245 MPa and Sliding speeds of 1, 3, & 5 m/s, on pin-on-disc type wear testing machine. To understand the wear results, effect of normal pressure and sliding speeds on volumetric wear rate and frictional force have been studied. Wear tests have been conducted according the orthogonal array. Taguchi method is adopted to optimize the process parameters. Wear mechanisms have been studied for different operating conditions. It is observed that combination of Martensite and Cementite phases developed from 1.5% carbon specimen has better wear resistance than other specimens.

Hyper eutectoid steels, Normal pressure, Sliding speed, Taguchi technique, Wear mechanism.

"Experimental investigation on dry sliding wear behaviour of Hyper- eutectoid steel using Taguchi Technique", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.6, Issue 5, page no.1-6, May-2019, Available :http://www.jetir.org/papers/JETIRCJ06001.pdf

"Experimental investigation on dry sliding wear behaviour of Hyper- eutectoid steel using Taguchi Technique", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.6, Issue 5, page no. pp1-6, May-2019, Available at : http://www.jetir.org/papers/JETIRCJ06001.pdf