Crack growth characteristics and damage in 12Cr steel under high temperature creep and creep-fatigue conditions

O. Yokota, R. Sugiura, M. Yoda, A. T. Yokobori, T. Yokobori

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

    1 Citation (Scopus)

    Abstract

    The combined effects of temperature and frequency on the crack growth rate and failure life were investigated using the compact tension specimens of 12Cr steel under creep and creep-fatigue conditions. The creep-fatigue tests were performed by introducing the hold time at the maximum load. At higher frequency where the crack growth rate near the initial stress intensity factor or reciprocal of failure life is proportional to the frequency, the cycle-dependent fatigue process is dominant. The Vickers hardness around the path of crack growth was obtained as a measure of damage during creep and creep-fatigue. Complex fracture surface or branched crack is attributed to the decrease in hardness for creep-fatigue interaction and is characterized by fractal analysis.

    Original languageEnglish
    Title of host publication11th International Conference on Fracture 2005, ICF11
    Pages3203-3208
    Number of pages6
    Publication statusPublished - 2005 Dec 1
    Event11th International Conference on Fracture 2005, ICF11 - Turin, Italy
    Duration: 2005 Mar 202005 Mar 25

    Publication series

    Name11th International Conference on Fracture 2005, ICF11
    Volume5

    Other

    Other11th International Conference on Fracture 2005, ICF11
    CountryItaly
    CityTurin
    Period05/3/2005/3/25

    ASJC Scopus subject areas

    • Geotechnical Engineering and Engineering Geology

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  • Cite this

    Yokota, O., Sugiura, R., Yoda, M., Yokobori, A. T., & Yokobori, T. (2005). Crack growth characteristics and damage in 12Cr steel under high temperature creep and creep-fatigue conditions. In 11th International Conference on Fracture 2005, ICF11 (pp. 3203-3208). (11th International Conference on Fracture 2005, ICF11; Vol. 5).