STRUCTURAL CHARACTERISTICS OF THE CONSTRUCTION MATERIAL AS THE CONSEQUENCE OF THE IMPACT OF INTEGRATED FACTORS

Abstract

The paper presents the results of a study of the radiation damage of stainless steel 10Х18Н10Т-ВД, which has the symbol EP-502. Radiation properties of steel were studied by the method of positron spectroscopy. The main structurally sensitive parameter was the probability of redistribution of positron annihilation between conduction electrons and bound electrons of matrix atoms. The object of the study was subjected to a complex effect of various factors. The main ones are melt processing of liquid metal lithium at 600 °C for 1000 hours from annealed, unstressed and stressed states. The next stage of the study was to study the structural characteristics of steel after saturation with hydrogen from these earthquakes. Lastly, metal was exposed to electrons and neutrons at fluences 10¹⁸ and 10¹⁹ cm^-2 at a temperature of no higher than 70 °С. The results of the investigations made it possible to establish the ambiguity of the influence of molten lithium on the radiation damage of stainless steel and its moderate aggressiveness on the corrosion processes of steel.