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    Volume 44, Issue 4 (July 2016)

    Fracture-Toughness Evaluation of Solution Heat-Treated Zr-2.5Nb Alloys as per ASTM and ISO Standards

    (Received 26 August 2014; accepted 24 June 2015)

    Published Online: 12 July 2016

    CODEN: JTEVAB

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    Abstract

    In the present work, fracture-toughness parameters of Zr-2.5Nb alloy were evaluated as per ASTM E1820 and ISO 12135 standards at 25°C and 300°C. To investigate the influence of the material's microstructure on deviation in fracture-toughness values, Zr-2.5Nb alloy plates were individually water quenched from three soaking temperatures; 850°C, 870°C, and 890°C with 15- and 30-min soaking durations. Under these six conditions, fracture resistance, J-R curves derived from these standards exhibited marginal deviations. However, slope of valid J-R curve region (dJ/da) obtained by two methods had appreciable differences, especially at 300°C.


    Author Information:

    Khandelwal, H. K.
    Mechanical Metallurgy Division, Bhabha Atomic Research Centre, Trombay, Mumbai,

    Homi Bhabha National Institute, Mumbai,

    Singh, R. N.
    Mechanical Metallurgy Division, Bhabha Atomic Research Centre, Trombay, Mumbai,

    Homi Bhabha National Institute, Mumbai,

    Chakravartty, J. K.
    Mechanical Metallurgy Division, Bhabha Atomic Research Centre, Trombay, Mumbai,


    Stock #: JTE20140329

    ISSN:0090-3973

    DOI: 10.1520/JTE20140329

    Author
    Title Fracture-Toughness Evaluation of Solution Heat-Treated Zr-2.5Nb Alloys as per ASTM and ISO Standards
    Symposium ,
    Committee B10