Slow strain rate testing showed that stress corrosion cracking (SCC) of A537 steels could occur in both simulated seawater and alternating wet-dry environments. SCC susceptibility increased as wet-dry time ratio increasing and with increasing corrosion-induced stress. The SCC mechanism was anodic dissolution (AD) under anode polarization and open circuit potential, and hydrogen induced cracking (HIC) under cathode polarization with high potential difference. The additive stress sigma p, induced by the corrosion process controlled susceptibility to SCC, regardless of the AD mechanism or HIC under either anodic or cathodic polarization conditions. SCC initiated at the interface between matrix and MnS inclusions, which was as anodic phases to promote the AD process of a large potential difference of -90 to -140 mV.


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    Title :

    Stress corrosion cracking of A537 steel in simulated marine environments


    Additional title:

    Spannungsrisskorrosion des Stahles A537 in künstlicher Meeresumgebung


    Contributors:
    Du, X.S. (author) / Su, Y.J. (author) / Li, J.X. (author) / Qiao, L.J. (author) / Chu, W.Y. (author)

    Published in:

    Corrosion Science ; 65 ; 278-287


    Publication date :

    2012


    Size :

    10 Seiten, 16 Bilder, 3 Tabellen, 39 Quellen




    Type of media :

    Article (Journal)


    Type of material :

    Print


    Language :

    English




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