Abstract
The friction and reciprocating wear of unlubricated type 316 austenitic stainless steel on itself was investigated in air at room temperature in the load range 8–50 N. The wear kinetics were followed by intermittently collecting and weighing the wear debris. A model of the wear process was developed in terms of the interaction of asperities to form adhesive transfer platelets which agglomerate to layered prows. It is postulated that wear debris is subsequently produced by prow breakdown. This occurs by two main modes: at low loads to fine particles and at high loads prows are flattened to thin flakes which fracture at the prow-matrix interface, possibly by a fatigue mechanism. There is evidence to suggest that the rate-limiting step is located at a stage prior to prow formation.
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