Search academic texts

Information × Registration Number 0212U000528, 0109U002651 , R & D reports Title Investigation of hydrogenation processes of advanced gas pipeline steels and criteria development of their strength and fracture in hydrogenous environments popup.stage_title Head Dmytrakh Ihor Mykolayovych, Доктор технічних наук Registration Date 21-02-2012 Organization Karpenko Physico-Mechanical Institute of the National Academy of Science of Ukraine popup.description2 The peculiarities and comparative assessment of hydrogenation processes of advanced pipeline steels have been done. It was shown that the ability of steel to absorb hydrogen decreases under transition from the pearlitic-ferritic structure to the structure of polygonal ferrite, and then to the ferritic-bainitic structure. For the first time an experimental relationship between fatigue crack growth rate and local hydrogen concentration at the crack tip was established under different values of hydrogen concentrations in bulk of pipeline steel. The effect of hydrogen concentration in bulk of metal of pipeline with crack-like defects on its strength and crack growth resistance was established. The safe sizes of defects depending on their shape and bulk hydrogen concentration in metal of pipeline were calculated. The version of expert software for technical diagnostics of serviceability of structural elements of piping systems for hydrogen transmission was developed. Product Description popup.authors Білий Орест Левкович Барна Роман Андрійович Вовк Роман Іванович Дорош Мар'ян Іванович Лещак Ростислав Любомирович Лутицький Олександр Лукич Сиротюк Андрій Михайлович Стащук Микола Григорович popup.nrat_date 2020-04-02 Close