Cathodic-polarization effects on the long/short corrosion-fatigue crack growth rate of an offshore steel

HU, H. and AKID, R. (2001). Cathodic-polarization effects on the long/short corrosion-fatigue crack growth rate of an offshore steel. Materials science, 37 (6), 902-909.

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Link to published version:: https://doi.org/10.1023/A:1015693124079
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    Abstract

    We study the cyclic crack growth rate of an offshore steel. Compact specimens with long cracks and cylindrical specimens with short surface cracks were tested in air (at frequencies of 5-10 Hz) and in a 3.5% aqueous solution of NaCl (0.2 Hz). In the presence of cathodic polarization (-950mV/SCE), the growth rate of long cracks is higher than under the conditions of free corrosion. The plateau appearing in this case in the da/dN-DeltaK diagrams indicates the presence of hydrogen embrittlement. For DeltaK > 10 MPa, the growth rates of short and long cracks coincide.

    Item Type: Article
    Research Institute, Centre or Group - Does NOT include content added after October 2018: Materials and Engineering Research Institute > Structural Materials and Integrity Research Centre > Centre for Corrosion Technology
    Identification Number: https://doi.org/10.1023/A:1015693124079
    Page Range: 902-909
    Depositing User: Ann Betterton
    Date Deposited: 11 Feb 2010 12:19
    Last Modified: 18 Mar 2021 09:30
    URI: http://shura.shu.ac.uk/id/eprint/1071

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