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    The Complex Action of Major Solutes on Radiation-Induced Swelling of Fe-Cr-Ni Austenitic Alloys


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    The radiation-induced swelling of simple Fe-Cr-Ni austenitic alloys is known to be very sensitive to solute additions. It is shown in this paper that three of the most common solute elements (P,Si,Mo) exert a very complex and often non-monotonic influence on swelling with increasing solute level. The complexity of this influence and its dependence on other variables appears to be the result of a closely balanced competition between two or more roles played by each solute in its interaction with both vacancies and interstitials. This competition yields a variety of different swelling behaviors in response to changes in solute or solvent composition, displacement rate, and irradiation temperature.


    Fe-Cr-Ni alloys, void swelling, atomic size difference, silicon, molybdenum, phosphorus, neutron irradiation, ion irradiation

    Author Information:

    Garner, FA
    Staff Scientist, Pacific Northwest Laboratory, Richland, WA

    Lauritzen, T
    Senior Engineer, General Electric Corporation, Sunnyvale, CA

    Mitchell, MA
    Graduate Student, University of Illinois, Urbana, IL

    Committee/Subcommittee: E10.08

    DOI: 10.1520/STP23972S