Influence of Hydrogen on the Mechanical Properties of Charpy V - Notch Specimens of Low Carbon Steel

摘要

Hydrogen embrittlement has been studied in steels containing 0.16% and 0.006% carbon which were subjected to an electrolytical charging. Charpy V - notch specimens of these materials were tested in three point slow bend loading. No embrittling effect of hydrogen appears below the ductility transition temperature of either alloy. Above this temperature, hydrogen embrittlement results from the formation of a high density of voids and the sharpening of the notch tip by coalescence with these voids. In contrast to the case of Iron -3% silicon, there is no evidence of hydrogen induced cleavage cracks. (Author)