STP754

    Texture Control of Zircaloy Tubing During Tube Reduction

    Published: Jan 1982


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    Abstract

    Seven batches of Zircaloy-2 tubing with widely different textures were processed from tube shells of the same size, by different reduction routes using pilger and 3-roll mills. Based on the texture data of these tubes, the texture control of Zircaloy tubing, the texture gradient across the wall, and the texture change during annealing were studied.

    The quantitative relationship between the texture parameter and the newly proposed strain ratio parameter was established using empirical equations in the case of both as-rolled and full-annealed tubing. The deformation texture of Zircaloy-2 tubing was dependent on the tool's curvature and was independent of the dimensions of the mother tubes. The different slopes of texture gradients were observed between the tubing of higher strain ratio and that of lower strain ratio. Also, the different types of the basal pole shift during annealing in the α temperature range were observed in the tested tubes.

    Keywords:

    Zircaloy-2, tube reduction, pilger mill, 3-roll mill, texture, strain ratio, nuclear industry, zirconium


    Author Information:

    Nagai, N
    Chief researcher, senior researcher, and researcher, Central Research Laboratory, Kobe Steel Ltd., Kobe,

    Kakuma, T
    Chief researcher, senior researcher, and researcher, Central Research Laboratory, Kobe Steel Ltd., Kobe,

    Fujita, K
    Chief researcher, senior researcher, and researcher, Central Research Laboratory, Kobe Steel Ltd., Kobe,


    Paper ID: STP37044S

    Committee/Subcommittee: B10.02

    DOI: 10.1520/STP37044S


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