2. Hydrogen embrittlement mechanisms
Numerous mechanisms have been proposed to interpret the different forms of hydrogen damage in iron and steel. They can be classified into three main families of mechanisms based on phase transformations, decohesion processes or hydrogen-strain interactions.
2.1 Fragilization induced by hydride precipitation
Hydride precipitation associated with hydrogen supersaturation under given temperature and pressure conditions and/or assisted by a stress field can induce high brittleness in certain materials
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Hydrogen embrittlement mechanisms
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