STP1046: The Slowing Down of Dislocation Climb by Voids at Later Stages of Material Irradiation

    Borodin, VA
    Scientist and laboratory head, I. V. Kurchatov Atomic Energy Institute, Moscow,

    Ryazanov, AI
    Scientist and laboratory head, I. V. Kurchatov Atomic Energy Institute, Moscow,

    Pages: 4    Published: Jan 1990


    Abstract

    One of the most interesting recent results in the realm of irradiation creep studies is the experimental demonstration of creep cessation in stainless steel 316 at high neutron exposures. Different mechanisms have been proposed to explain this phenomenon. Here we discuss in some detail one such mechanism that is related to the diffusional interaction of climbing dislocations with voids. It is shown that the pipe diffusion of point defects along dislocations can result in “capturing” of dislocations by voids. On the other hand, the kinetics of growth of dislocation-associated voids differ from that of voids in the material volume.

    Keywords:

    irradiation creep, dislocations, voids


    Paper ID: STP24667S

    Committee/Subcommittee: E10.08

    DOI: 10.1520/STP24667S


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