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Information × Registration Number 0216U010241, 0116U006345 , R & D reports Title Development of the methodological basis for technical state assessment and secure lifetime justification of structural elements of the increased danger objects in hydrogen-contained environments popup.stage_title Head Dmytrakh Ihor, Доктор технічних наук Registration Date 27-12-2016 Organization Karpenko Physico-Mechanical Institute of the National Academy of Science of Ukraine popup.description2 Based on the experimental results of steels testing under quasi static uniaxial loading, the existence of some characteristic value of the hydrogen concentration at which the mechanism of hydrogen influence changes, namely: below this value the enhanced plasticity takes places and above - the hydrogen embrittlement occurs, was shown. The ambiguous relationship between fatigue crack growth rate and hydrogen concentration CH in the bulk of metal under cyclic loading of the low-alloyed steel in hydrogen-contained environments has been found. It was shown that there is a certain CH value at which the crack growth resistance of steel increases and the diagrams of fatigue crack growth rate are shifted to higher values of stress intensity factor. This value correlates with established characteristic value of the hydrogen concentration at which the mechanism of hydrogen effect on steel deformation under static loading changes. Product Description popup.authors Барна Роман Андрійович Вовк Роман Іванович Лещак Ростислав Любомирович Лутицький Олександр Лукич Сиротюк Андрій Михайлович popup.nrat_date 2020-04-02 Close