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Information × Registration Number 0212U002476, 0111U006666 , R & D reports Title Development of basic research on the nature and regularities of formation of hydrogen-induced cracks in welded joints of structural steel, for storage and transportation of hydrogen. popup.stage_title Head Pokhodnya Igor Konstantinovich, Registration Date 01-03-2012 Organization E.O. Paton Electric Welding Institute of the National Academy of Sciences of Ukraine popup.description2 The paper considers in detail the mechanism of hydrogen embrittlement (HE) at the micro level. The theoretical conclusions are based on the dislocation model of HE in the metal confirmed experimentally by the example of steel VSt3sp. It is shown that with increasing degree of preliminary deformation of the metal with hydrogen stress fracture is reduced, while for the metal without hydrogen, it increases. The experimental evidence of enhanced hydrogen initiation / growth of microcracks in plastic at the beginning of metal. The calculation results in increase of the degree of hydrogen embrittlement with decreasing grain size (reduced rate) correlated with experimental results in increase of the degree of hydrogen embrittlement with increasing prior strain hydrogen charged metal. Thus, the theoretical conclusions based on the dislocation model of HE in the metal, are confirmed by experimental data. Product Description popup.authors Ігнатенко Олексій Вікторович Пальцевич Андрій Петрович Синюк Володимир Сергійович popup.nrat_date 2020-04-02 Close