STP1125: Tensile Behavior of Cu-5Ni and Various Precipitation-Strengthened Copper Alloys after High-Fluence Irradiation

    Shikama, T
    The Oarai Branch, IMR, Tohoku University, Oarai, Ibarakiken,

    Garner, FA
    Battelle Pacific Northwest Laboratory, Richland, WA

    Hamilton, ML
    Battelle Pacific Northwest Laboratory, Richland, WA

    Anderson, KR
    University of Illinois, Urbana, IL

    Pages: 8    Published: Jan 1992


    Abstract

    Tension tests and fractography were used to examine the radiation-induced evolution of Cu-5Ni and three commercially prepared precipitation-strengthened alloys after irradiation in the Fast Flux Test Facility (FFTF) at 684 and 800 K. The addition of nickel to copper resulted in increased ductility prior to irradiation but decreased ductility after irradiation. The postirradiation difference appears to arise from the influence of nickel on void swelling.

    The precipitation-strengthened alloys in general exhibited drops in yield strength after irradiation and increased ductility. The major effect appeared to be related primarily to overaging of the precipitates (radiation-enhanced recrystallization).

    Keywords:

    copper alloys, precipitation strengthened, heavy irradiation, radiation-enhanced recrystallization, tension test


    Paper ID: STP17915S

    Committee/Subcommittee: E10.08

    DOI: 10.1520/STP17915S


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