Cyclic response of copper single crystal micro-specimen

Abstract

Fully reversed tension-compression cyclic loading experiment is conducted for a copper single crystal micro-specimen with a single slip orientation under constant deformation amplitude control. Cyclic loading brings about nanoscale extrusion/intrusion on the specimen surface, which is not developed in monotonic loading. The size of extrusion/intrusion is much different from that of bulk counterpart. This indicates that micro-scale metallic materials possess a characteristic fatigue behavior.