Line pipe steel, fatigue-crack-growth

Fig. 7.119 Fatigue-crack-growth rates as a function of stress-intensity amplitude for X-65 line pipe steel in air. Frequency 0.1-15 Hz, at R = 0.2. Redrawn from Ref 1 69...

L.W. Tsay, Y.C. Chen, S.L.I. Chen, Sulfide stress corrosion cracking and fatigue crack growth of welded TMCP API 5 L X65 pipe-line steel, Int. J. Fatigue 23 (2001) 103-113. 

Vosikovsky, O. Fatigue-crack growth in an X-65 line-pipe steel at low cyclic frequencies in aqueous environments. Trans. ASME Series H 97, 298-305 (1975)... 

---