Abstract
Analytic expressions based on a self-consistent deformation model are derived to relate irradiation deformation of a polycrystal to that of a single crystal, in terms of the specimen crystallographic texture, for both the low and high neutron-fluence regimes. By interpolating between these two extreme regimes, an approximation for intermediate fluences is also derived. From this calculation we conclude that irradiation creep and growth are additive, but that the steady-state growth rate depends on the creep compliance. Furthermore, the steady-state growth rate and creep compliance cannot be obtained by simply averaging over grain orientations.
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