STP782: Creep and Swelling of Type 348 Stainless Steel at Temperatures up to 700 K and Comparison with Fast Reactor Data

    Beeston, JM
    Scientific Specialist, EG&G Idaho Inc., Idaho Falls, Idaho

    Thomas, LE
    Principal Engineer, Westinghouse Hanford Co., Richland, WA

    Pages: 21    Published: Jan 1982


    Abstract

    In-reactor creep and swelling of Type 348 stainless steel from ATR SN-5 and ETR H-10 in-pile tube measurements were investigated to identify and characterize their mechanistic relationships at temperatures less than 723 K. The principal creep mechanism appears to be irradiation-enhanced-diffusion-accommodated flow along high conductivity paths near the grain boundaries. The irradiation creep is a function of temperature and is presented as an empirical equation. The swelling in the ATR in-pile tubes is also presented as an empirical equation.

    Keywords:

    irradiation creep, swelling, classical creep mechanism, diffusion-accommodated flow, creep models, electron microscopy, grain boundary diffusion, volume diffusion, cavities, faulted dislocation loops, SIPA


    Paper ID: STP34339S

    Committee/Subcommittee: E10.07

    DOI: 10.1520/STP34339S


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