Assessment of tribo meter study of 20MnCr5 alloy steel under case hardened and shot peened condition 2019-28-0098
This research is constrained to study the strength and wear resistance of 20MnCr5 (SAE 5120) alloy steel under monolithic, case hardened and case hardened with shot peening processing condition. Improve the hardness of the material by enhancing the core and surface strength of case hardened with shot peened sample. The principle goal of this proposed work is to conduct the tribo meter test for the three test samples by differing the load of 5, 10, 15 and 20N and sliding speed of 290,580,870 rpm respectively. The impact on tribo meter process parameters on wear rate and co-efficient of friction be calculated and recorded for this study. Less wear rate and nominal co-efficient of friction was observed for case hardened with shot peened sample. Load and sliding distance increases wear rate decreases and co-efficient of friction increases for all the tested samples due to oxide layer formation. After reaching certain load and sliding speed the curve goes linear because of more contact between pin and disc, so that mechanical amalgamation layer will be framed. On the other hand worn out surface was observed by using scanning electron microscope and reveals absence of micro crack, continuous groove formation of the worn out surface.