STP870

    Swelling of Microstructure of Neutron-Irradiated Titanium-Modified Type 316 Stainless Steel

    Published: Jan 1985


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    Abstract

    The analysis of the behavior of fuel pins irradiated in the same Rapsodie subassembly, shows that titanium has a marked beneficial effect on the swelling resistance of cold-worked Type 316 stainless steel in a wide temperature range. This effect is particularly visible at high temperature since cold-worked Type 316 titanium does not swell above 550°C up to a dose of 100 French displacements per atom (dpaF)(∼74 dpa NRT).

    The results obtained on samples irradiated in a Rapsodie experimental rig give us confirmation of the good behavior of cold-worked Type 316 titanium stainless steel that swells less and at lower temperature than other steels of the Type 316 series such as solution-annealed Type 316 titanium or aged solution-annealed Type 316 titanium.

    The swelling differences between some of these materials can be associated with different microstructures that are also very different from the ones obtained on the unirradiated steels aged for the same time and temperature conditions.

    Keywords:

    radiation, neutron irradiation, void swelling, microstructure, Type 316 stainless steels, titanium stabilization, cladding, phase stability


    Author Information:

    Seran, JL
    Scientist, scientist, technician, technician, scientist, and scientist, Département de Technologie, Service de Recherches Métallurgiques Appliquées, Section de Métallurgie Physique Appliquées, Centre d'Etudes Nucléaires de Sacley, Gif-sur-Yvette, Cedex,

    Naour, LL
    Scientist, scientist, technician, technician, scientist, and scientist, Département de Technologie, Service de Recherches Métallurgiques Appliquées, Section de Métallurgie Physique Appliquées, Centre d'Etudes Nucléaires de Sacley, Gif-sur-Yvette, Cedex,

    Grosjean, P
    Scientist, scientist, technician, technician, scientist, and scientist, Département de Technologie, Service de Recherches Métallurgiques Appliquées, Section de Métallurgie Physique Appliquées, Centre d'Etudes Nucléaires de Sacley, Gif-sur-Yvette, Cedex,

    Hugon, MP
    Scientist, scientist, technician, technician, scientist, and scientist, Département de Technologie, Service de Recherches Métallurgiques Appliquées, Section de Métallurgie Physique Appliquées, Centre d'Etudes Nucléaires de Sacley, Gif-sur-Yvette, Cedex,

    Carteret, Y
    Scientist, scientist, technician, technician, scientist, and scientist, Département de Technologie, Service de Recherches Métallurgiques Appliquées, Section de Métallurgie Physique Appliquées, Centre d'Etudes Nucléaires de Sacley, Gif-sur-Yvette, Cedex,

    Maillard, A
    Scientist, scientist, technician, technician, scientist, and scientist, Département de Technologie, Service de Recherches Métallurgiques Appliquées, Section de Métallurgie Physique Appliquées, Centre d'Etudes Nucléaires de Sacley, Gif-sur-Yvette, Cedex,


    Paper ID: STP37365S

    Committee/Subcommittee: E10.08

    DOI: 10.1520/STP37365S


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