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    In-situ micro-cantilever bending test in environmental scanning electron microscope: Real time observation of hydrogen enhanced cracking

    Access Status
    Fulltext not available
    Authors
    Deng, Y.
    Hajilou, T.
    Wan, D.
    Kheradmand, N.
    Barnoush, Afrooz
    Date
    2017
    Type
    Journal Article
    
    Metadata
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    Citation
    Deng, Y. and Hajilou, T. and Wan, D. and Kheradmand, N. and Barnoush, A. 2017. In-situ micro-cantilever bending test in environmental scanning electron microscope: Real time observation of hydrogen enhanced cracking. Scripta Materialia. 127: pp. 19-23.
    Source Title
    Scripta Materialia
    DOI
    10.1016/j.scriptamat.2016.08.026
    ISSN
    1359-6462
    School
    WASM: Minerals, Energy and Chemical Engineering (WASM-MECE)
    URI
    http://hdl.handle.net/20.500.11937/72949
    Collection
    • Curtin Research Publications
    Abstract

    © 2016 Acta Materialia Inc. A novel approach of in-situ micro-cantilever bending tests is introduced, integrating nanoindentation and environmental scanning electron microscopy (ESEM) to elucidate hydrogen embrittlement (HE) in FeAl. Bending tests were performed in vacuum (~ 5 × 10- 4 Pa) and in ESEM with water vapor (180 Pa, 450 Pa) conditions, which introduce H in-situ into the cantilevers during the test. Micro-scale In-situ SEM testing provides a full control of all the parameters involved in HE as well as avoids the proximity effect from the free surface, which is always criticized in nano-scale in-situ TEM experiments. Both hydrogen induced cracking and hydrogen reduced flow stress were observed.

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