STP1046V2

    Residual Tensile Properties at Low and High Strain Rates of AISI 316H Predamaged by Creep, Low Cycle Fatigue, and Irradiation to 2 dpa

    Published: Jan 1990


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    Abstract

    Residual mechanical properties have been determined in tension at low (∼0.0035 s−1), medium (∼10 s−1), and high strain rates (∼1000 s−1), at 550°C, of American Iron and Steel Institute (AISI) 316H having previously been subjected to increasing degrees of damage by creep, low cycle fatigue, low cycle fatigue, and irradiation to 2 dpa. Strength increase and ductility reduction with respect to the as-received material have been observed. Strain rate hardening characterizes the response to dynamic loading in case of single damaging processes, while the superposition of low cycle fatigue and irradiation caused strain rate softening. Instabilities of the deformation process, shown by the flow curves, govern the phenomena.

    Keywords:

    AISI 316, creep, low cycle fatigue, irradiation, residual mechanical properties, high strain rate


    Author Information:

    Albertini, Carlo
    Engineers, Ispra Establishment, Ispra, Va

    Iida, Kunihiro
    Professor emeritus, University of Tokyo, Tokyo,

    Grande, Angelo Del
    Engineers, Ispra Establishment, Ispra, Va

    Forlani, Mario
    Engineers, Ispra Establishment, Ispra, Va

    Pachera, Alberto
    Engineers, Ispra Establishment, Ispra, Va

    Montagnani, Mario
    Engineers, Ispra Establishment, Ispra, Va


    Paper ID: STP49462S

    Committee/Subcommittee: E10.07

    DOI: 10.1520/STP49462S


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