Analytical electron microscopy was used to measure the composition of GBs (grain boundaries) and IBs (interconstituent boundaries) of X52 pipeline steel using specimens about 40-60 nm in thickness. All elements of interest were examined with the exception of carbon. With this caveat, there was no segregation at proeutectoid ferrite GBs. This indicated that the commonly expected species S and P are not responsible for preferential corrosion of GBs during intergranular stress corrosion cracking of pipeline steels. Manganese was the only species measured to segregate at the IBs. Manganese segregated to the IBs between proeutectoid ferrite and pearlitic cementite, and desegregated from IBs between proeutectoid ferrite and pearlitic ferrite. The pearlitic cementite was Mn rich. There was no Mn segregation at the IBs between pearlitic ferrite and perlitic cementite. The pattern of Mn segregation could be explained in terms of diffusion in the process zone ahead of the pearlite during the austenite to perlite transformation and diffusion in the IBs between the proeutectoid ferrite and pearlite.


    Zugriff

    Zugriff über TIB

    Verfügbarkeit in meiner Bibliothek prüfen

    Bestellung bei Subito €


    Exportieren, teilen und zitieren



    Titel :

    Measurement of grain boundary composition for X52 pipeline steel


    Weitere Titelangaben:

    Messung der Korngrenzenzusammensetzung am X52-Pipelinestahl


    Beteiligte:
    Wang, J.Q. (Autor:in) / Atrens, A. (Autor:in) / Cousens, D.R. (Autor:in) / Kelly, P.M. (Autor:in) / Nockolds, C. (Autor:in) / Bulcock, S. (Autor:in)

    Erschienen in:

    Acta Materialia ; 46 , 16 ; 5677-5687


    Erscheinungsdatum :

    1998


    Format / Umfang :

    11 Seiten, 13 Bilder, 2 Tabellen, 40 Quellen




    Medientyp :

    Aufsatz (Zeitschrift)


    Format :

    Print


    Sprache :

    Englisch





    Effect of electrolyte composition on crack growth rate in pipeline steel

    Marshakov, A.I. / Ignatenko, V.E. / Bogdanov, R.I. et al. | Tema Archiv | 2014


    Requirements on pipeline steel

    Shabalov, I.P. / Shafigin, E.K. / Odesskiy, P.D. | Tema Archiv | 2010


    Measurement and modelling of the crack tip opening angle in a pipeline steel

    Andrews, R. / Chterenlikht, A. / Howard, I. et al. | Tema Archiv | 2002


    Maglev Pipeline to Improve Grain Shipments from America to Asia

    Knolle, E. G. | British Library Conference Proceedings | 1998