Strain Amplitude and Temperature Effects on the Low Cycle Fatigue Behavior of Alloy 617M

In the present investigation, comparative evaluation of the low cycle fatigue (LCF) of tube and forged Alloy 617M have been studied. Total axial strain controlled tests were performed on sub-sized specimens between 300 and 1023 K employing strain amplitudes ranging from ±0.25 to ±1 % at a nominal strain rate of 3 × 10−3 s−1. The alloy underwent cyclic hardening at all temperatures and strain amplitudes and the rate of hardening was sensitive to...