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International Hydrogen Conference (IHC 2012): Hydrogen-Materials Interactions

B. P. Somerday
B. P. Somerday
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P. Sofronis
P. Sofronis
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ASME Press
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Corrosion-fatigue crack-growth rates (da/dN) in high-strength steels in aqueous NaCl have been measured for a range of cathodic potentials and cycle frequencies (with varying rise-time and fall-time) at a constant ΔK of 30 MPa√m. Observations include: (i) increasing da/dN with increasing rise-time/fall-time (with a sigmoidal dependency), (ii) increasing da/dN with increasing cathodic protection, but with only small increases beyond -1050 mV(SCE), (iii) a small shift in the sigmoidal curves along the rise-time/fall-time axes of da/dN-time plots for specimens with coated sides compared with bare specimens, and (iv) cleavage-like fractures. The data can best be explained in terms of the adsorption-induced...

Experimental Procedure
Discussion and Conclusions
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