이종마찰압접재의 접합계면 및 계면근방에서의 피로균열거동

Behavior of Fatigue Crack at Interface and Around Interface for friction Welded Dissimilar Materials

In this study behavior of fatigue crack and fatigue fracture is observed under rotary bending fatigue testing in friction welded dissimilar materials. Fatigue fracture most occurred in SM15C heat affected zone around Interface. In case of fatigue test, stress is reduced the position of fracture gradually moves to the welded Interface. Micro crack of heat affected zone surface on SM15C is observed at any different stress.