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    Dissimilar mechanical properties-microstructures microalloyed pipeline steels cracking performance under sour environment

    Dissimilar mechanical properties-microstructures microalloyed pipeline steels cracking performance under sour environment


    The cracking behavior of an API 5L X52 microalloyed pipeline steel at 25 and 50 degree C, under a sour environment, is compared with the cracking behavior of an API 5L X65 microalloyed pipeline steel with different microstructure and mechanical properties. The results show that the microstructure of X65 steel is much more resistant to develop and propagate a crack under proportional stress intensity factors and the same sour environmental conditions at room temperature (25 degree C). The reverse result was obtained at 50 degree C, however, a comparative growth in % criteria shows that X52 steel does not present a much better resistance to propagate a crack than X65 steel. These behaviors at both temperatures are indicative that steels microstructures might play an important role to resist cracking.

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    Titel :

    Dissimilar mechanical properties-microstructures microalloyed pipeline steels cracking performance under sour environment

    Beteiligte:
    Fragiel, A. (Autor:in) / Serna, S. (Autor:in) / Campillo, B. (Autor:in) / Cota, L. (Autor:in)
    Erschienen in:

    Materials Science and Engineering, Part A (Structural Materials: Properties, Microstructure and Processing) ; 467 , 1-2 ; 1-7

    Erscheinungsdatum :

    2007

    Format / Umfang :

    7 Seiten, 18 Quellen

    ISSN :

    0921-5093

    DOI :

    https://doi.org/10.1016/j.msea.2007.05.086

    Medientyp :

    Aufsatz (Zeitschrift)

    Format :

    Print

    Sprache :

    Englisch

    Schlagwörter :

    mechanische Eigenschaft , Metallographie , Mikrolegieren , mikrolegierter Stahl , Mikrostruktur , Pipeline , Rissbildung , Risseinleitung , Rissfortpflanzung , Rohrstahl , saures Medium , Spannungsintensitätsfaktor , Temperatureinfluss , Umgebungsbedingung

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