STP870: Solute Segregation and Void Formation on Grain Boundaries in Electron-Irradiated Type 316 Stainless Steel

    Ohnuki, S
    Instructor, associate professor, and professor, Faculty of Engineering, Hokkaido University, Sapporo,

    Takahashi, H
    Instructor, associate professor, and professor, Faculty of Engineering, Hokkaido University, Sapporo,

    Takeyama, T
    Instructor, associate professor, and professor, Faculty of Engineering, Hokkaido University, Sapporo,

    Pages: 11    Published: Jan 1985


    Abstract

    Radiation-induced segregation and void formation on grain boundaries in titanium-modified Type 316 stainless steel were investigated by electron irradiation and X-ray microanalysis (EDX). Strong enrichment and depletion of solutes were observed on grain boundaries during irradiation. Moreover, preferential void formation on grain boundaries occurred and grain boundary migration was induced by the irradiation. These facts indicate that grain boundaries act as preferential sinks for radiation-induced point defects, and the sink behavior may be changed by the development of the segregation under irradiation.

    Keywords:

    fusion reactor material, titanium-modified Type 316 stainless steel, void formation, radiation-induced segregation, electron irradiation, grain boundary migration


    Paper ID: STP37377S

    Committee/Subcommittee: E10.07

    DOI: 10.1520/STP37377S


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