Creep crack growth analysis of welded joints for high cr heat resisting steel

M. Tubuchi, H. Hongo, T. Watanabe, A. T. Yokobori

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

    7 Citations (Scopus)

    Abstract

    The creep strength of weldment for high Cr ferritic steels decreases due to Type IV damages in the heat affected zone during long-term services at high temperatures. It is important to predict initiation and growth of creep voids and cracks in weldment. This paper clarified the Type IV crack initiation and growth properties in fine-grained HAZ of weldments for tungsten strengthened high Cr steels. On the basis of experimental results, the computational simulation for Type IV crack growth behavior was conducted. The effect of multiaxial stress condition on vacancy diffusion and crack initiation was discussed.

    Original languageEnglish
    Title of host publicationFatigue and Fracture Mechanics
    Subtitle of host publication35th Volume
    PublisherASTM International
    Pages93-101
    Number of pages9
    ISBN (Print)0803134061, 9780803134065
    Publication statusPublished - 2007 Jan 1
    Event35th ASTM National Symposium on Fatigue and Fracture Mechanics - Reno, NV, United States
    Duration: 2005 May 182005 May 20

    Publication series

    NameASTM Special Technical Publication
    Volume1480 STP
    ISSN (Print)0066-0558

    Other

    Other35th ASTM National Symposium on Fatigue and Fracture Mechanics
    CountryUnited States
    CityReno, NV
    Period05/5/1805/5/20

    Keywords

    • Creep crack growth
    • FEM
    • High Cr heat resisting steel
    • Type IV fracture
    • Welded joint

    ASJC Scopus subject areas

    • Materials Science(all)

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