銅単結晶マイクロ試験片の繰り返し負荷応答

抄録

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.