The present work has been carried out to study the different heat-treatment processes to obtain carbide-free bainite in the high silicon spring steel. Silicon content helps to develop carbide-free bainite (compositions of steel is 0.551% C, 1.756% Si, 0.825% Mn, and 0.13% Cr) and also, to avoid carbide precipitation formation during austempering. The desired microstructure of treated samples has been achieved through heat treatment process at different austempering temperatures such as 300 °C, 350 °C, and 400 °C at holding time of 10, 20 and 30 min. Further, the wear rate of the base and treated samples has been analysed through the pin-on-disc testing machine. The retained austenite helps to resist the crack initiation and propagation through transformation during deformation, and it also improves wear resistant and hardness of the treated sample. The effect of fraction of retained austenite and its carbon content on the specific wear rate has been systematically studied. The phase fraction and retained austenite stability have been critically analysed with the help of X-ray diffraction, atomic force microscopy and scanning electron microscopy.