Fatigue crack growth rate has been studied in an X65 pipeline steel, submerged in crude oil containing hydrogen sulfide in concentrations from 30 ppm to saturation. The studies provide data needed to estimate the corrosion fatigue life of flawed structures operating in “sour” crude oil. The results show that crack growth rate in crude oil is a function of hydrogen sulfide content. The effect of cyclic frequency in the range 0.1 to 10 Hz is minor and can be neglected.
National Association of Corrosion Engineers
1982
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