The deuterium-impurity interaction and the grain boundary embrittlement in nickel

Abstract

Sulphur and carbon grain boundary segregations are studied by Auger spectroscopy. Differently heat‐treated samples are electrolytically deuterium doped and fractured by tension in the chamber of a special Auger spectrometer. The deuterium content is calculated on grain boundaries in the frame of Guttmann's formal approach taking into account the interatomic interaction in 2HSC complex segregation. The effective energy of deuterium segregation and its grain boundary concentration increase with growing S and C segregation level.