01530nab a2200205 4500 20260520000858.0 260224s2010 xxu Effect of Dissolved Oxygen on Stress Corrosion Cracking of X70 Pipeline Steel in Near-Neutral pH Solution ene. 2010 07/07/2010 ; 07/07/2010 6 p. ; 015006 Transcripción del resumen del autor. To clarify the role of dissolved oxygen in near-neutral pH stress corrosion cracking (SCC), slow strain rate test (SSRT), dynamic polarization technique, and electrochemical impedance spectroscopy (EIS) were used to investigate the relationship comprehensively between SCC susceptibility and the electrochemical corrosion reactions occurring at the steel/solution interface in diluted, varying N2-purged, near-neutral pH solutions. Results showed that SCC susceptibility is inversely proportional to dissolved oxygen (DO) concentration. At open-circuit potential, concentrated dissolved oxygen reacts with H and forms oxide film to reduce hydrogen embrittlement, resulting in the reduction of SCC susceptibility in NS4 solution. In NS4 deoxygenated solution, the SCC of X70 pipeline steel is controlled by a combined electrochemical process in which anodic reactions and hydrogen penetration occur at the same time. 1 Corrosion 66 ARTICULO Liu, Z.Y. 43551 Li, X.G. 43552 Du, C.W. 43553 171835 171835 0 0 0 0 239654 BAAB BAAB 2026-03-05 200046710 0 200046710 2026-03-05 15:14:13 2026-03-05 ARTICULO