STP551

    Plastic Instability in Irradiated Zr-Sn and Zr-Nb Alloys

    Published: Jan 1974


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    Abstract

    Factors affecting the plastic instability of irradiated zirconium alloys in tensile deformation have been studied. The materials used were pure zirconium, commercial Zircaloy-2 and Zr-2.5Nb, and a series of alloys based on pure zirconium containing either niobium or tin. The materials were rolled into thick sheet which enabled different crystallographic textures and deformation modes to be studied. Niobium alloy additions delay the onset of plastic instability and in some circumstances reverse the textural effects found in commercial Zircaloy-2 and Zr-2.5Nb. The merits of Zr-Nb alloys for use as fuel sheathing are outlined.

    Keywords:

    zirconium, zirconium alloys, irradiation, deformation, plasticity, plastic deformation, microstructure, texture


    Author Information:

    Cheadle, BA
    Research officers and research technologist, Atomic Energy of Canada Limited, Fuels and Materials Div., Chalk River Nuclear Labs., Chalk River, Ontario

    Ellis, CE
    Research officers and research technologist, Atomic Energy of Canada Limited, Fuels and Materials Div., Chalk River Nuclear Labs., Chalk River, Ontario

    van der Kuur, J
    Research officers and research technologist, Atomic Energy of Canada Limited, Fuels and Materials Div., Chalk River Nuclear Labs., Chalk River, Ontario


    Paper ID: STP32126S

    Committee/Subcommittee: B10.02

    DOI: 10.1520/STP32126S


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