Influence of irradiation on creep velocity of polycrystals with bamboo structure

The effect of radiation on the creep rate in polycrystalline materials having the bamboo structure, when proper grain-boundary slip is the process controlling deformation is considered. The grain boundaries of a mixed type are considered in the framework of the theory of grain boundary dislocations. Information on the boundary structures is obtained on the basis of experiments on nickel, copper and aluminium thermal creep; dependence of the creep rate in these materials on neutron radiation intensity is calculated when using it. Conditions, under which a radiation-induced component of creep exceeds the thermal one and determines deformation process, are detected