Abstract
Interdiffusion studies have been carried out in the bcc phase of the Zr-Ti alloy system using diffusion couples of zirconium and Zr-Ti alloys. Geoscan electron microprobe was employed to establish the concentration-penetration profiles in the diffusion zones, and the interdiffusion coefficients were evaluated by Boltzmann-Matano analysis. The concentration and temperature dependence of the diffusivity have also been examined. Present studies further showed that the diffusivity in the Zr-Ti system in theβ-phase could be expressed by an equation similar to that given by Vignes and Birchenall for vacancy-controlled interdiffusion in fee solid solutions.
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