Abstract
The mechanism of pitting failure observed during rolling contact wear tests of carbon steel ring specimens is reported. Microscope observations of the specimens were made to obtain detailed fundamental information on the occurrence and growth of surface cracks and pits. The pitted area, wear loss and hardness of the contact surface of each specimen were measured at regular intervals during testing. The results gave useful information regarding the processes of pit formation and rate of pit growth under rolling contact. An equation was derived to determine the rate of pit growth and was found to give good results for rolling contact conditions.
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