Effect of the strain rate on the low cycle fatigue behavior of a 10Cr-2W-Mo-3Co-NbV steel at 650 °C

The effect of a strain rate varying from ∼10−3 to ∼10−5 s−1 at a strain amplitude ranging from ±0.2% to ±0.6% on the low cycle fatigue (LCF) behavior and the microstructure of a 10%Cr-2%W-0.7%Mo-3%Co-NbV steel with 0.008 wt.% B and 0.003 wt.% N additions was studied at a temperature of 650 °C. Decreasing the strain rate and increasing the strain amplitude was demonstrated to reduce the resistance of the 10%Cr steel to cyclic softening due to...