This work is focused on the corrosion behaviour of weldments in X80 pipeline steel. In order to clarify their susceptibility to soil corrosion, general corrosion and stress corrosion crack experiments were carried out in a simulated soil solution (g/L: 0.483 NaHCO3, 0.131 MgSO4.7H2O, 0.127 CaCl2, 0.122 KCl). Based on these results, the heat affected zone (HAZ) demonstrated higher corrosion susceptibility than the base metal and the weld metal. This was due to both the higher intrinsic corrosion rate of the HAZ and the galvanic effects between the HAZ and the other regions of the weldment. Additionally, in slow strain rate testing, corrosion damage in the HAZ resulted in a significant decrease in fracture area reduction and time to failure and an increase in the appearance of brittle failure on the fracture surface compared with the base metal. Elemental segregation and coarse grains appear to be two factors that lead to the high corrosion of HAZ.


    Zugriff

    Zugriff über TIB

    Verfügbarkeit in meiner Bibliothek prüfen

    Bestellung bei Subito €


    Exportieren, teilen und zitieren



    Titel :

    Susceptibility of welded X80 pipeline steel to corrosion in simulated soil solution


    Weitere Titelangaben:

    Korrosionsempfindlichkeit von geschweißtem Rohrstahl X80 in simuliertem Erdboden


    Beteiligte:
    Ren, C.Q. (Autor:in) / Xian, N. (Autor:in) / Wang, X. (Autor:in) / Liu, L. (Autor:in) / Zheng, Y.P. (Autor:in)

    Erschienen in:

    Erscheinungsdatum :

    2012


    Format / Umfang :

    5 Seiten, 9 Bilder, 4 Tabellen, 22 Quellen




    Medientyp :

    Aufsatz (Zeitschrift)


    Format :

    Print


    Sprache :

    Englisch




    Study of AC corrosion on coated pipeline steel in simulated soil solution

    Xu, Xin / Xu, Lining / Liu, Wei et al. | Tema Archiv | 2011


    Grooving corrosion of a 24-in seam welded pipeline

    El-Sayed, Mohamed Hanafy | Tema Archiv | 2014


    STEEL TUBING, CORROSION RESISTANT WELDED

    SAE Technical Papers | 1944


    Transgranular stress corrosion cracking of X-60 pipeline steel in simulated ground water

    Zhang, X.Y. / Lambert, S.B. / Sutherby, R. et al. | Tema Archiv | 1999