Volume 3, Issue 5 (May 2006)

    Creep Crack Growth Analysis of Welded Joints for High Cr Heat Resisting Steel

    (Received 12 April 2005; accepted 30 January 2006)

    CODEN: JAIOAD

      Format Pages Price  
    PDF Version 9 $25   ADD TO CART


    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.


    Author Information:

    Tabuchi, M
    Group Leader and Senior Researchers, National Institute for Materials Science, High Temperature Materials Group, Tsukuba,

    Hongo, H
    Group Leader and Senior Researchers, National Institute for Materials Science, High Temperature Materials Group, Tsukuba,

    Watanabe, T
    Group Leader and Senior Researchers, National Institute for Materials Science, High Temperature Materials Group, Tsukuba,

    Yokobori, AT
    Professor, Tohoku University, Sendai,


    Stock #: JAI13226

    ISSN: 1546-962X

    DOI: 10.1520/JAI13226

    ASTM International is a member of CrossRef.

    Author
    Title Creep Crack Growth Analysis of Welded Joints for High Cr Heat Resisting Steel
    Symposium Fatigue and Fracture Mechanics: 35th Volume, 2005-05-20
    Committee E08