Transition of wear mechanism and change of microstructure in worn surface layers of GCr15 steel in dry sliding wear process

The characteristics of dry sliding wear of GCr15 steel after normal hardening and after isothermal hardening treatment were studied. Changing the sliding conditions causes a transition of the wear mechanism. Compared to normal hardening treatment, isothermal hardening leads the transition of the wear effect to a higher load and higher speed. α→γ phase transformation has taken place in the wear process. An amorphous structure is found on some worn surfaces.