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

    STP1418

    In-Beam Fatigue Response of a Low Activation Ferritic Steel at 60°C

    Published: 0


      Format Pages Price  
    PDF (192K) 10 $25   ADD TO CART
    Complete Source PDF (9.2M) 493 $152   ADD TO CART

    Cite this document

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


    Abstract

    Fatigue response was investigated for a low activation ferritic steel, F82H, under in-beam (dynamic), post-irradiation (static) and unirradiation conditions with 17 MeV protons at 60°C. Miniaturized specimens with a side notch in gauge were tested in a stress-control mode with triangular wave at two different loading ratios; R (σmaxmin) = 0.44 (375 MPa ↔ 165 MPa) and R = 0.2 (375 MPa ↔ 75 MPa). Fracture surfaces were examined by a scanning electron microscope (SEM) for all specimens. Some evidence of the dynamic irradiation effect on fatigue response was observed in both fatigue tests and the SEM evaluations. The dynamic effect was more influential than the static effect at R = 0.44, while it was suppressed at R = 0.2 where the larger loading amplitude was imposed on the specimen. Balance between defect flux and fatigue damage development would control the dynamic irradiation effect.

    Keywords:

    radiation effects, proton Irradiation, mechanical properties, fatigue response, crack propagation, SEM observation, low-activation ferritic/martensitic alloy


    Author Information:

    Murase, Y
    Researcher of 2nd subgroup, 2nd subgroup leader and 3rd subgroup leader, National Research Institute for Metals, Ibaraki,

    Nagakawa, J
    Researcher of 2nd subgroup, 2nd subgroup leader and 3rd subgroup leader, National Research Institute for Metals, Ibaraki,

    Professor, Interdisciplinary Graduate School of Engineering Sciences, Kyushu University, Fukuoka,

    Yamamoto, N
    Researcher of 2nd subgroup, 2nd subgroup leader and 3rd subgroup leader, National Research Institute for Metals, Ibaraki,


    Committee/Subcommittee: E10.02

    DOI: 10.1520/STP10822S