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Hydrogen degradation of steels and its related parameters, a review

Many steel structures can absorb varying amounts of hydrogen during manufacturing, processing such as electroplating or acid pickling and during service life by corrosion reactions or cathodic protection. Hydrogen is known to have a devastating effect on strength and ductility of iron and steel components. Many studies have been done on the detrimental effects of hydrogen on iron and different steel structures but there is a need for comprehensive research to cover all related parameters which can control the extent of hydrogen interaction and degradation in steels. In this review, at first hydrogen uptake and different damages associated with absorbed hydrogen in steels are discussed. Then, the effective parameters in the extent of hydrogen interaction and degradation, especially hydrogen embrittlement which is more common in steel components are reviewed.