You are being redirected because this document is part of your ASTM Compass® subscription.
    This document is part of your ASTM Compass® subscription.

    If you are an ASTM Compass Subscriber and this document is part of your subscription, you can access it for free at ASTM Compass

    Ductility and Hardening of Neutron-Irradiated Fe-Cr and Fe-Cr-Ni Steels

    Published: 01 January 1992

      Format Pages Price  
    PDF (228K) 13 $25   ADD TO CART
    Complete Source PDF (28M) 1299 $264   ADD TO CART

    Cite this document

    X Add email address send
      .RIS For RefWorks, EndNote, ProCite, Reference Manager, Zoteo, and many others.   .DOCX For Microsoft Word


    Fe-Cr and Fe-Ni-Cr steels are candidate alloys for fusion reactor materials. For future design it is important to clarify the general rules of mechanical properties for those alloys irradiated at higher fluence and at higher temperatures. In this investigation, to find general rules for irradiation effects, twelve kinds of commercial Fe-Cr and Fe-Ni-Cr steels were irradiated in JMTR. The total flux was 6 × 1025n/m2, and the irradiation temperature was 743 to 848 K. Yield strength, tensile strength, and uniform ductility at room temperature were observed for all specimens before and after irradiation, and work-hardening exponents were obtained from stress-strain curves of those specimens. In all cases, uniform ductility was equal to the work-hardening exponent, there was a close relationship between strength and uniform ductility, and there was no anomalous behavior in these alloy series. Further study was made of Fe-9Cr-2Mo steel, which was irradiated to 3 × 1026 n/m2 at 673 to 923 K in EBR-II. Electron micrographs for controlled or irradiated specimens were used for the analysis of the change of strength by irradiation. The strength and uniform ductility was interpreted from microstructural aspects.


    Fe-Cr, Fe-Ni-Cr, JMTR, neutron irradiation, uniform ductility, yield strength, tensile strength, work-hardening coefficient, EBR-II, electron micrograph, analysis

    Author Information:

    Igata, N
    Professor, Science University of Tokyo, Noda Chiba Pret.,

    Kayano, H
    Professor, Tohoku University, Ibaragi Pref.,

    Committee/Subcommittee: E10.08

    DOI: 10.1520/STP17943S