At present,the global low-carbon and green development is urgent,and the voice of hy-drogen energy as a zero-carbon energy is rising.Hydrogen storage and transportation is an extremely im-portant part of the hydrogen industrial chain,whilst,among others the pipeline transportation is the most economical and efficient way.However,the pipeline steel is in direct contact with hydrogen,and thus the issue of hydrogen induced damage has become a hot topic again.This review focused on the advance-ments of how are hydrogen molecules adsorbed and converted into hydrogen atoms on the steel surface and then permeated inwards,as well as the microscopic mechanism of hydrogen embrittlement.The rela-tionships between the hydrogen embrittlement susceptibility with the properties of pipeline steel,such as strength,microstructure,hydrogen traps,and the external environmental factors,such as hydrogen par-tial pressure,temperature,and load,are summarized.The methods for preventing and inhibiting the hy-drogen embrittlement of pipeline steel are further summarized.Finally,specific suggestions are proposed for the current difficulties in the study of hydrogen damage related with pipeline steel.
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