An experimental investigation on wear characteristics of C-45 grade steel overlay with stellite

Abstract

Abrasive wear is of particular importance in various ground-engaging applications and the necessity of tools with high wear resistant materials has increased exponentially to extend the life span as well as to reduce the cost involved in manufacturing. This work is mainly focusing on the development of wear resistance for the aforementioned ground-engaging applications. An overlaying alloy (stellite 6) in the form of electrode form was used to coat the mild steel of grade C-45, which was used as the substrate material. The wear behaviour was characterized using a Pin-on-Disk test setup in a dry condition. A correlation between the size of overlaid material and the size of the C-45 material was observed by an optical microscope and observed that the presence of the CoCr alloy matrix significantly improves the wear resistance. The presence of the CoCr alloy matrix is found to enhance the wear resistance by reducing the rate of wear of the material. The results show that the increasing coating thickness increases the hardness of the material and the significant improvement in the wear resistance with coating.