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Information × Registration Number 0214U007712, 0112U002786 , R & D reports Title Establishment of influence corrosive-electrochemical factors and flood on opirnist' destruction of pipe staley in sulphuretted hydrogen environments at static and cyclic tensions popup.stage_title Head Khoma Myroslav, Registration Date 13-01-2015 Organization Karpenko Physico-Mechanical Institute of the National Academy of Science of Ukraine popup.description2 Object of study - the resistance of steels 20 17Г1СУ, 30ХMA, 12Х21Н5Т, 08Х18Н10Т to corrosion-mechanical destruction of chloride hydrogen sulfide solutions. The aim of the research - investigate regularities and mechanisms of cracks initiation in steels with different structures and ratios between their resistance to stress corrosion cracking and corrosion fatigue, corrosion speed and the degree of hydrogenation in hydrogen sulfide environments in dependence on their aggressiveness. Investigation methods - corrosion-mechanical methods, rrosion-electrochemical methods, micro-electrochemical methods, metallographic methods and methods for evaluation of hydrogen concentration in metals. Concentration of hydrogen in steel 17Г1СУ reaches maximum values ~ 29,9-34,0 ml/100 g Mе in solution saturated by hydrogen sulfide independence on corrosion rate and pH. It is investigated that the tendency of low-carbon and low-alloy steels to stress corrosion cracking in NACE solution mainly is defined by concentration of diffusionaly moved hydrogen in the metal and to corrosion fatigue - by hydrogen with larger binding energy of Me-H. In solution NACE crack initiation in steels 20, 30XMA proceeds with prevailing hydrogen embrittlement and steel 17Г1СУ - simultaneous action of corrosion and hydrogen factors. For static and asymmetric cyclic stresses prevailing factor of corrosion-mechanical fracture of steels and 08Х18Н10Т 12Х21Н5Т is hydrogen embrittlement, for the cyclic symmetric and an effect of local corrosion and dissolution. Product Description popup.authors Івашків Василь Романович Антощак Ігор Миколайович Воробель Володимир Ігорович Головей Світлана Анатоліївна Дацко Богдан Миколайович Дячук Алла Іллівна Чумало Галина Василівна Чучман Мар'ян Романович popup.nrat_date 2020-04-02 Close