The results of Mossbauer and X-ray diffraction investigations of neutron irradiated FeaAl alloy are presented. The behaviour of the irradiated samples during heat treatment shows significant differences as compared with the nonirradiated ones in the Mossbauer spectra and diffraction patterns. The results are attributed to the presence of submicroparticles of new phases in the irradiated samples which are stable during heat treatment.

No 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.

No abstract

No abstract