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    Texture Changes Produced During Zircaloy-4 Tubing Fabrication: From Forged Billet to Finished Tubing

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    Certain fabrication procedures yield tubing with large variations in texture around the circumference. Such variations lead to non-uniform mechanical properties and to difficulties in design specifications. The purpose of this work was to follow the texture changes that occur during fabrication from forged billet through extrusion, rocking, and straightening to finished tubing and to determine the effects various fabrication schedules have on the textures of the tubing.

    We observed the development of texture inhomogeneities at each step of tubing fabrication.

    The significance of this work is that, for the first time, a detailed texture study has been made through an entire set of tubing-fabrication runs under controlled conditions of starting stock, tubing reductions, and heat treatment. Such an examination yields valuable insight into the causes of varying texture quality in tubing.


    Zircaloy, fabrication, texture changes, effect of fabrication on texture, anisotropy, tubing

    Author Information:

    Hobson, D. O.
    Metallurgist, Metals and Ceramics Division, Oak Ridge National Laboratory, Oak Ridge, Tenn.

    Committee/Subcommittee: B10.02

    DOI: 10.1520/STP43819S