Abstract
Corrosion fatigue (CF) behavior of 316LN stainless steel under different strain amplitudes (0.3–0.8%) in 325 °C water was investigated at a strain rate of 0.04% s−1. It was found that the fatigue life and strain amplitude has a linear relation in double logarithmic coordinate. The environmental damage increased with decreasing strain amplitudes. The synergistic effect of mechanical and environmental damages during the CF process in high-temperature pressurized water is discussed, and a calculation equation for environmental fatigue correction factor Fen is proposed to calculate the strain amplitude effect.
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