STP1046V2: An Evaluation of Linde 80 Submerged-Arc Weld Metal Charpy Data Irradiated in the HSST Program

    Lowe, Arthur L.
    Advisory engineer (materials), Babcock & Wilcox, A. McDermott Company, Lynchburg, VA

    Pages: 13    Published: Jan 1990


    Abstract

    This report describes an evaluation of Charpy test data from high-copper, low Charpy upper-shelf energy, Linde 80 submerged-arc weld metals furnished by the Babcock & Wilcox (B&W) Owners Group for irradiation and testing as a part of the Second and Third Irradiation Series of the Heavy Section Steel Technology (HSST) Program at Oak Ridge National Laboratory for a timely study of the effects of neutron radiation. The HSST data was evaluated to provide a large data base from which to evaluate the effects of neutron radiation on the Charpy impact test results. The specimens were irradiated over a range of temperatures and fluence values. These specimens were grouped by the irradiation temperature and fluence so as to minimize the standard deviation value for both properties. The upper-shelf energy, the 30-ft-lb (40.7-J) transition temperature, and the 50-ft-lb (67.8-J) transition temperature were reevaluated. These Charpy transition temperature and upper-shelf energy values are significantly different from the comparable values previously reported by the HSST Program. The upper-shelf energy values and 30-ft-lb (40.7-J) transition temperatures for each data subset are summarized. From these data, one author was able to determine the effect of irradiation temperature on the change in Charpy impact properties.

    Keywords:

    Charpy impact data, neutron fluence, submerged-arc weld metal, Linde 80 weld metal, irradiation temperature, reactor vessel weld metals, neutron radiation


    Paper ID: STP49451S

    Committee/Subcommittee: E10.07

    DOI: 10.1520/STP49451S


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