Reactor Pressure Vessel Steel Smart Behavior as Cause of Instability in Kinetics of Radiation Embrittlement

Fast neutron intensity influence on reactor materials radiation damage is a critically important question in theproblem of the correct use of the accelerated irradiation tests data for substantiation of the materials workability inreal irradiation conditions that is low neutron intensity. Investigations of the fast neutron intensity (flux) influence onradiation damage and experimental data scattering reveal the existence of non-monotonous sections in kinetics ofthe reactor pressure vessels (RPV) steel damage. Discovery of the oscillations as indicator of the self-organizationprocesses presence give reasons for new ways searching on reactor pressure vessel (RPV) steel radiation stabilityincreasing and attempt of the self-restoring metal elaboration. Revealing of the wavelike process in the form of nonmonotonous parts of the kinetics of radiation embrittlement testifies that periodic transformation of the structuretake place. This fact actualizes the problem of more precise definition of the RPV materials radiation embrittlementmechanisms and gives reasons for search of the ways to manage the radiation stability (nanostructuring and so on tostimulate the radiation defects annihilation), development of the means for creating of more stableness self recoveringsmart materials.