STP1046V2

    Influence of Thermomechanical Treatment and Environmental History on Creep, Swelling, and Embrittlement of AISI 316 at 400°Cand 130 dpa

    Published: Jan 1990


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    Abstract

    A comprehensive creep experiment on AISI 316 stainless steel involving irradiation at ∼400°C to 130 dpa has been completed. The influence of material and environmental variables on the creep and swelling of this steel at ∼400°C is shown to have many similarities to the behavior exhibited in an earlier experiment conducted at ∼550°C, but significant differences are also apparent. These arise because the 400°C experiment was clearly conducted in a regime dominated by the kinetics of point defect recombination, whereas the 550°C experiment was conducted in the sink-dominated regime. At 400°C, it is also shown that severe embrittlement arises concurrent with ∼10% swelling, requiring careful handling of test specimens and structural assemblies at room temperature.

    Keywords:

    316 stainless steel, neutron irradiation, irradiation creep, void swelling, embrittlement, high fluence


    Author Information:

    Porter, Douglas L.
    Metallurgist, Argonne National Laboratory, Falls, ID

    Wood, Elon L.
    Scientific associate, Argonne National Laboratory, Falls, ID

    Garner, Frank A.
    Staff scientist, Pacific Northwest Laboratory, Richland, WA


    Paper ID: STP49474S

    Committee/Subcommittee: E10.07

    DOI: 10.1520/STP49474S


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