Characterisation of creep-fatigue crack growth behaviour for Alloy 617 on circular notched specimen

A. T. Yokobori, Ryuji Sugiura, A. Sakamoto, K. Jinno, Isamu Nonaka, T. Matsuzaki

    Research output: Contribution to journalArticle

    Abstract

    In this study, by conducting the creep-fatigue crack growth tests using circular notched round bar specimens for Alloy 617, the crack growth behaviour was characterized on the basis of crack growth data obtained from the direct current potential drop (DCPD) method, which results in the assurance of the high accuracy of crack length measurement. Furthermore, on the basis of catastrophe theory, an attempt is made to predict theoretically the threshold temperature of creep crack growth related to the diffusion creep mechanism.

    Original languageEnglish
    Pages (from-to)340-346
    Number of pages7
    JournalMaterials at High Temperatures
    Volume32
    Issue number3
    DOIs
    Publication statusPublished - 2015 May 1

    Keywords

    • Alloy 617
    • Catastrophe theory
    • Circular notched specimen
    • Creep fatigue crack growth

    ASJC Scopus subject areas

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

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