STP1046V2: Effects of Neutron Irradiation to 98 dpa on the Swelling of Various Copper Alloys

    Brager, Howard R.
    Fellow engineer, Westinghouse Hanford, Richland, WA

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

    Pages: 6    Published: Jan 1990


    Abstract

    An irradiation series on copper alloys in the Fast Flux Test Facility (FFTF-MOTA) at about 450°C has been completed. Four exposure levels were reached, with the maximum at 98 dpa. Immersion density measurements of various copper alloys show swelling values ranging from 1 to 64% at 98 dpa. Minor solute additions have a pronounced influence on the irradiation resistance of the high-conductivity copper alloys. Copper dispersion-hardened with 0.25% Al2O3 (designated Al25) and precipitation-strengthened alloys MZC and CuBe are the most swelling resistant of the materials investigated. A second-generation experimental series of copper alloys to further explore the results of the current series is being irradiated in FFTF-MOTA.

    Keywords:

    neutron irradiation, swelling, copper alloys, dislocation density


    Paper ID: STP49477S

    Committee/Subcommittee: E10.08

    DOI: 10.1520/STP49477S


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