The proposal of Q* parameter and derivation of the law of creep crack growth life for a round bar specimen with a circular notch for Cr-Mo-V steel

T. Adachi, A. T. Yokobori, M. Tabuchi, A. Fuji, T. Yokobori, K. Nikbin

    Research output: Contribution to journalArticlepeer-review

    16 Citations (Scopus)

    Abstract

    Using a round bar circular notched specimen for Cr-Mo-V steel and the proposed equation predicting crack length on the basis of electric potential drop method, the creep crack growth tests were previously conducted to investigate the effect of multi-axial stress on creep crack growth rate(CCGR). In this paper, more detailed experiments and analyses on the creep crack growth were conducted and the Q* parameter which characterizes CCGR for this circular notched specimen was derived. Furthermore, using the Q* parameter, the prediction law of creep crack growth life was also derived.

    Original languageEnglish
    Pages (from-to)95-100
    Number of pages6
    JournalMaterials at High Temperatures
    Volume21
    Issue number2
    DOIs
    Publication statusPublished - 2004 Jan 1

    Keywords

    • Circular notch
    • Creep crack growth life
    • Creep crack growth rate
    • Electric potential drop method
    • Multi-axial stress
    • Q* parameter
    • Round bar specimen

    ASJC Scopus subject areas

    • Ceramics and Composites
    • Condensed Matter Physics
    • Mechanics of Materials
    • Mechanical Engineering
    • Metals and Alloys
    • Materials Chemistry

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