Volume 5, Issue 7 (July 2008)

    Investigation of Structural and Chemical Uniformity of Zr2.5% Nb and E635 Alloy by Radioactive Indicators

    (Received 10 March 2007; accepted 21 April 2008)

    Published Online: 2008

    CODEN: JAIOAD

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    Abstract

    The performance and structure of final nuclear zirconium alloy components is formed at all processing steps, from ingot melting and subsequent forging, quenching, pilgering, and heat treatment. The subject of this investigation was the structure of zirconium alloy ingots made by double melting in a vacuum arc furnace, and investigated by the use of radioactive indicators (RAIs). The isotopes that were used were W185 and C14, which were added in very small quantities to the charge before melting the ingot. The RAI isotopes decorate the ingot structure, and provide an opportunity to investigate the behavior of impurity levels during solidification of the molten pool, and the structure in the various types of solidification zones within the ingot. The forged material and other products were investigated using the C14 isotope. Carbon distribution data were obtained for both Zr2.5Nb and for E635 structures on both macroscopic and microscopic levels. The structures and phases in which the carbon isotope was concentrated were discovered.


    Author Information:

    Arzhakova, Valentine
    All-Russia Scientific Research Institute of Inorganic Materials, Moscow,

    Shikov, Alexander
    All-Russia Scientific Research Institute of Inorganic Materials, Moscow,

    Kabanov, Alexander
    All-Russia Scientific Research Institute of Inorganic Materials, Moscow,

    Belov, Vladimir
    Technology Division, Chepetskiy Mechanical Plant, Glazov, Udmurtiya

    Shtutsa, Mikhail
    Technology Division, Chepetskiy Mechanical Plant, Glazov, Udmurtiya

    Ziganshin, Alexander
    Technology Division, Chepetskiy Mechanical Plant, Glazov, Udmurtiya

    Kurapov, Valeriy
    “Titan-Isotope” Company, Volgograd,

    Kurapova, Liya
    “Titan-Isotope” Company, Volgograd,


    Stock #: JAI101134

    ISSN: 1546-962X

    DOI: 10.1520/JAI101134

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    Author
    Title Investigation of Structural and Chemical Uniformity of Zr2.5% Nb and E635 Alloy by Radioactive Indicators
    Symposium 15th International Symposium on Zirconium in the Nuclear Industry, 2007-06-28
    Committee B10