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    STP1125

    Postirradiation Strength and Deformation of Ferritic Fe-Cr Binary Alloys

    Published: 01 January 1992


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    Abstract

    Six binary Fe-Cr alloys with chromium levels ranging from 3 to 18% were tensile tested at room temperature following irradiation at 365, 403, and 574°C to doses of 7.4, 37.7, and 34.3 dpa, respectively. Irradiation at 365 and 403°C produced significant strengthening at all chromium levels, with concurrent reductions in ductility. Strength levels were insensitive to composition, irradiation temperature, or neutron exposure. Irradiation at 574°C produced strength increases at only the two highest chromium levels. The results are attributed to dislocation loop and void development at 365 and 403°C, and phase instability at 574°C. No evidence for channel fracture was found.

    Keywords:

    deformation, mechanical properties, neutron irradiation, tensile behavior


    Author Information:

    Hamilton, ML
    Senior scientist and staff scientist, Pacific Northwest Laboratory, Richland, WA

    Gelles, DS
    Senior scientist and staff scientist, Pacific Northwest Laboratory, Richland, WA


    Committee/Subcommittee: E10.08

    DOI: 10.1520/STP17942S