Radiation-Induced Structural Effects Observing in VVER-1000 RPV Steels under Operation, Recovery Annealing and Accelerated ReIrradiation.

UDC: 
621.039.531

Issue of journal:

Abstract: 

In this paper evolution of radiation-induced structure elements and level of grain-boundary segregationinVVER-1000 welds during operation, recovery annealing and accelerated re-irradiation
were studied using high-resolution methods of transmission and scanning electron microscopy and Auger electron spectroscopy.
The level of grain-boundary segregations in various states was established as well as the fast neutron fluence and flux dependence of the density of radiation defects and radiation-induced precipitates. It is shown that the radiation-induced structure effects correlate with the results of mechanical tests.

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