STP1447

    Effects of Copper Content on the Tensile Properties of Iron-Copper Alloys

    Published: Jan 2004


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    Abstract

    Miniature tensile specimens of high purity iron and iron-copper alloys containing 0.1 and 0.3 weight percent copper were irradiated at 150°C and 290°C in the HFIR to 0.025 and 0.1 dpa. Following irradiation, room temperature tensile tests were performed. The effect of copper content on the yield stress (YS), ultimate tensile strength (UTS), uniform elongation (UE), and total elongation (TE) were examined for both unirradiated and irradiated specimens. For the unirradiated specimens, YS and UTS increased by 10% or less when copper in the amount of 0.1% was added, while UE decreased by about 30% and TE decreased by about 20% when copper in the amount of 0.1% was added to the pure iron. There was almost no further change in tensile properties when the copper content was increased from 0.1% to 0.3%. The effect of irradiation at 290°C to 0.1 dpa was to increase the strength and decrease the ductility of all the materials. Greater percent changes in tensile properties were observed in the Fe-XCu alloys after irradiation suggesting that copper contributes to the formation of extended defects at these temperatures.

    Keywords:

    iron, copper, tensile, flow localization, work softening, channel deformation, irradiation


    Author Information:

    Toloczko, MB
    Post-Doctoral Fellow and Staff Scientist, Pacific Northwest National Laboratory, Richland, WA

    Kumar, AS
    Professor, University of Missouri Rolla, Rolla, MO

    Hamilton, ML
    Post-Doctoral Fellow and Staff Scientist, Pacific Northwest National Laboratory, Richland, WA

    Jumel, S
    Staff Scientist, Electricité de France,

    Van Duysen, JC
    Staff Scientist, Electricité de France,

    Snead, LL
    Staff Scientist, Oak Ridge National Laboratory, Oak Ridge, TN


    Paper ID: STP11239S

    Committee/Subcommittee: E10.02

    DOI: 10.1520/STP11239S


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