Investigation of Role of Subsurface Zones in Wear of Materials. Final Report

摘要

Experimental work was conducted with wear tests in both the undirectional sliding and reciprocating impact modes. Experimental results included weight loss and/or volume change measurements, and specimens were analyzed for subsurface zone characteristics by optical and scanning electron microscopy, energy-dispersive x-ray analysis, and by powder x-ray techniques. Theoretical work was based, in part, upon finite-element analysis of subsurface zone development, including thermo-elastoplastic work hardening with temperature-dependent physical properties. The effect of the geometry on the magnitude of the stress intensity factor of a rigid sliding specimen was also investigated. (ERA citation 11:003147)