Abstract
Adhesive and (three-body) abrasive wear modes in the interface between a 303 steel shaft and a 52100 steel ball-bearing inner race were studied. Scanning electron micrographs showed significant differences in the different stages of adhesive and abrasive wear modes. Further scanning electron microscopy examinations of the cross section of the worn samples showed severely strained layers on the shafts from adhesive wear and heat-affected transformed surface layers on the bearing races from both adhesive and abrasive wear tests. Transmission electron microscopy examinations also showed a severely strained layer in the case of the adhesively worn shaft. A significant increase in hardness was measured on shafts from both wear modes. Auger analysis of worn surfaces detected the existence of modified layers and material removal. The metallurgical techniques described in this paper can be successfully used to diagnose wear.
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