Investigating the wear behaviour of induction hardened 100Cr6 steel

Abstract

100Cr6 steel surface was induction hardened in order to be used in a bushing manufacturing. After examining the microstructure and hardness variations of the hardened surfaces, ball-on disc type wear tests were carried out. Wear tests were performed at 4,92 mm/s sliding speed, under various loads (2,5-5-10 N), in dry medium and at room temperature. The results of wear tests were evaluated by the mass loss method. The coefficients of friction were obtained during wear tests. The wear tracks and worn surfaces were investigated by optic and scanning electron microscopes. As a result, the surface hardness of the steel was obtained 2,5 times more than the core hardness by the aid of formed martensitic matrix structure instead of pearlitic one on steel surface by induction hardening process. It is seen that the highest mass loss was obtained by applying 5 N load in wear tests.