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    Relationship of Microstructure and Tensile Properties for Neutron-Irradiated Vanadium Alloys

    Published: 01 January 1992

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    The microstructures in V-15Cr-5Ti, V-10Cr-5Ti, V-3Ti-lSi, V-15Ti-7.5Cr, and V-20Ti alloys were examined by transmission electron microscopy after neutron irradiation at 600°C to 21 to 84 atom displacements per atom in the Materials Open Test Assembly of the Fast Flux Test Facility. The microstructures in these irradiated alloys were analyzed to determine the radiation-produced dislocation density, precipitate number density and size, and void number density and size. The results of these analyses were used to compute increases in yield stress and swelling of the irradiated alloys. The computed increase in yield stress was compared with the increase in yield stress determined from tension tests on these irradiated alloys. This comparison made it possible to evaluate the influence of alloy composition on the evolution of radiation-damaged microstructures and the resulting tensile properties.


    vanadium alloys, neutron-irradiated, yield stress, microstructure, precipitates, swelling

    Author Information:

    Loomis, BA
    Metallurgist, Argonne National Laboratory, Argonne, IL

    Smith, DL
    Director, Fusion Power Program, Argonne National Laboratory, Argonne, IL

    Committee/Subcommittee: E10.08

    DOI: 10.1520/STP17918S