STP955

    Neutron-Induced Swelling of Fe-Mn and Fe-Cr-Mn Austenitic Alloys

    Published: Jan 1987


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    Abstract

    An effort is underway to explore the potential of Fe-Cr-Mn austenitic alloys as substitutes for Fe-Cr-Ni alloys in fusion reactors. This substitution is desired to achieve a reduced level of long-term radioactivity and thereby reduce the cost and safety hazards associated with disposal of reactor components at their end of life. Neutron-induced swelling data to 50 dpa are now available at 520°C for three reduced activation alloy series and for lower exposures at 420 and 600°C. These three series cover simple binary and ternary alloys, solute-modified ternaries, and a variety of commercially available Fe-Cr-Mn alloys. The swelling of these alloys is initially similar to that of Fe-Cr-Ni alloys but then changes in response to phase instabilities that develop in the Fe-Cr-Mn system.

    Keywords:

    Fe-Mn alloys, Fe-Cr-Mn alloys, austenitic alloys, voids, swelling, neutron irradiation, reduced activation, phase instabilities, ferrite


    Author Information:

    Garner, FA
    Fellow scientist and fellow scientist, Westinghouse Hanford Co., Richland, WA

    Brager, HR
    Fellow scientist and fellow scientist, Westinghouse Hanford Co., Richland, WA


    Paper ID: STP33817S

    Committee/Subcommittee: E10.07

    DOI: 10.1520/STP33817S


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