A Study on Creep-Fatigue Interaction of Cobalt-Base Super Alloy X-40 at High Temperature : Especially, Effect of Strain Shapes on the Creep-Fatigue Interaction

In the present study, the effect of strain-wave shapes on creep-fatigue interaction of a super alloy X-40 was studied by using four types of total strain range-controlled fatigue tests at 800°C in atmosphere. The four types of the wave shapes were (a) push-pull continuous low-cycle fatigue test, (b) low-cycle fatigue test with tensile hold-time in each cycle, (c) low-cycle fatigue test with compressive hold-time in each cycle and (d) low-cycle...