Abstract
In this work, the effect of Cl- concentration on the stress corrosion cracking (SCC) behavior of E690 steel in low pH solution was studied. The SCC behavior of E690 steel is controlled by the combination of anodic dissolution and hydrogen embrittlement. The Cl- concentration has a significant effect on the electrochemical reaction, and icorr and Ecorr increase first and then decrease as the Cl- concentration increases from 0.5 to 4.0 mol/L. The SCC behavior of E690 steel is affected by the electrochemical reaction. Thus, the SCC susceptibility increases first and then decreases as the Cl- concentration increases from 0.5 to 4.0 mol/L.
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