Abstract
The state of stress in ion-bombarded specimens is analysed. The magnitude of the lateral compressive stresses is shown to depend on the ratio of the swelling rate to the creep rate compliance. The latter is given for three different mechanisms of irradiation creep in face-centered cubic crystals. Due to the dependence of the creep compliance on the crystal orientation, the lateral stresses in a given grain depend on its orientation with respect to the specimen surface. Detailed results are presented of the state of stress as a function of the grain orientation for all three irradiation creep mechanisms. These results are discussed in the context of blistering and step-height measurements.
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