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Influence of Phosphorus and Boron on Hydrogen Embrittlement Susceptibility of High Strength Low Alloy Steel

“…There are some similarities and close connection between this impurity induced temper embrittlement (TE) and hydrogen embrittlement (HE). [2][3][4][5][6] The susceptibility to both types of embrittlement is generally enhanced as the strength is raised, and the fracture caused by the embrittlement occurs primarily along prior austenitic grain boundaries. The increase in ductile-brittle transition temperature (DBTT) due to TE is more pronounced in the presence of hydrogen, that is, under the interaction of hydrogen with impurities.…”