Abstract
A new theory of creep rate enhancement under energetic particle irradiation is developed in this paper. The theory is applicable only to substitutional solid solution alloys in which a diffusion controlled dislocation drag mechanism (a microcreep mechanism) determines the creep rate. If the dislocation lines are the dominant sinks for point defects, the predicted enhanced creep rate is proportional to the first power of the applied stress. If voids are the dominant point defect sinks then the predicted enhanced creep rate is proportional to the third power of the stress. In both cases the predicted enhanced creep rate is only very weakly dependent upon the temperature.
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