STP782

    Influence of Dose and Dose Rate Ont the Microstructure of Solution Annealed 316 Steel Irradiated Around 600 °C

    Published: Jan 1982


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    Abstract

    Samples of Phenix fuel pin cladding material irradiated at 600°C have been examined by transmission electron microscopy and X-ray dispersive analysis. The effect of dose and dose rate has been investigated in a dose range of 11 to 55 dpaF and for dose rates of 6 and 20 10−6 dpaFs−1. The results reveal that the general features of the dose dependence of the irradiation induced microstructural changes in SA 316 steel are not fundamentally different from those observed in dilute alloys. They emphasize the important role of preexisting dislocations on void and precipitate nucleation and reveal an important segregation of nickel at voids which can be responsible of the acceleration of swelling rate in this temperature range.

    Keywords:

    316, neutron irradiation, TEM, microstructure, voids, dislocations, segregation, swelling, precipitation


    Author Information:

    Le Naour, L
    Research Scientist, Department of Technology, Centre d'Erudes Nucliaires de Saclay, Gif Sur Yvette, Cedex,

    Vouillon, N
    Research Scientist, Department of Technology, Centre d'Erudes Nucliaires de Saclay, Gif Sur Yvette, Cedex,

    Levy, V
    Research Scientist, Department of Technology, Centre d'Erudes Nucliaires de Saclay, Gif Sur Yvette, Cedex,


    Paper ID: STP34353S

    Committee/Subcommittee: E10.07

    DOI: 10.1520/STP34353S


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