Effect of hydrogen on internal friction and young's modulus of Fe-Cr-Mn austenitic stainless steel

摘要

The internal friction technique has so far been applied to studies on hydrogen behavior in iron and steel. The hydrogen cold-work peak is well known for pure iron (1.2) and has also been observed in BCC iron alloys such as ferritic stainless steel (3) and maraging steel (4), It provides important information about the hydrogen- dislocation interaction in the BCC iron lattice. Meanwhile, for FCC iron alloys such as aus- lenitic stainless steel, another characteristic Indrogen internal friction peak has been found by authors' group (5-9) and confirmed by several other investigators (10-15). This hydrogen peak may arise from the Snoek-type relaxation of hydrogen atoms in the FCC iron lattice but its mechanism is not clarified in de tail, although the problem has recently been discussed systematically by Zielinski and Lunarska (12) and by Gavriljuk et al. (14).