Effect of hydrogen on fatigue-crack growth of a ferritic-pearlitic low carbon steel

Akihide Nagao, Mohsen Dadfarnia, Shuai Wang, Petros Sofronis, Kelly E. Nygren, Ian M. Robertson

    Research output: Chapter in Book/Report/Conference proceedingConference contribution

    1 Citation (Scopus)

    Abstract

    The effect of external high-pressure H2 gas on fatigue-crack growth behavior has been examined using a ferritic-pearlitic low carbon steel. The presence of hydrogen accelerates the crack growth rate by ∼13 times compared to the uncharged state and shifts the fracture surface morphology from ductile striations to a mixture of "flat" and "quasi-cleavage" features. The common feature found in the microstructure immediately beneath the hydrogen-induced fracture surface is enhanced plasticity in terms of refined dislocation cell structures and dense dislocation bands.

    Original languageEnglish
    Title of host publicationMaterials and Fabrication
    PublisherAmerican Society of Mechanical Engineers (ASME)
    ISBN (Electronic)9780791858004
    DOIs
    Publication statusPublished - 2017
    EventASME 2017 Pressure Vessels and Piping Conference, PVP 2017 - Waikoloa, United States
    Duration: Jul 16 2017Jul 20 2017

    Publication series

    NameAmerican Society of Mechanical Engineers, Pressure Vessels and Piping Division (Publication) PVP
    Volume6B-2017
    ISSN (Print)0277-027X

    Other

    OtherASME 2017 Pressure Vessels and Piping Conference, PVP 2017
    Country/TerritoryUnited States
    CityWaikoloa
    Period7/16/177/20/17

    All Science Journal Classification (ASJC) codes

    • Mechanical Engineering

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