MAGNETOSTRICTION IN LAVES PHASE-COMPOUNDS CE1-XPRXFE2, SM1-XPRXFE2,Y1-XPRXFE2 AND THEIR EASY AXES OF MAGNETIZATION

The pseudo-binary Laves phase compounds RE1−xPrxFe2 (RE = Ce, Sm and Y) were successfully synthesized applying the high pressure technique. We have measured magnetostriction in the compounds at 77 and 293 K and discuss the results in relation with the magnetic anisotropy determined by Mössbauer spectroscopy

DAMAGE RECOVERY IN ELECTRON-IRRADIATED FE-NI-CR ALLOYS

Two martensitic steels (Fe-8.5 Cr-0.9 MoVNb and Fe-9.0 Cr-1.8 MoVNb), one ferritic steel (Fe-17 Cr-1.5 MoVNb), 316 stainless steel and Ni3Fe were irradiated with 2 MeV electrons to . The damage recovery was studied by positron annihilation and differential scanning calorimetry (DSC). Results suggest that vacancies migrate and disappear below 330 K in the martensitic phase. Vacancies in the ferritic and austenitic phases disappear around 420 K, enhancing the precipitation. Ordered Ni3Fe has three DSC annealing stages between 400 and 600 K