Synthesis and structural characterization of nanocrystalline Fe-Ni-Zr-B alloy prepared by powder metallurgy
Written by sctunisie no commentsThe present study reports on the formation of nanocrystalline Fe-Ni-Zr-B alloy using the mechanical alloying technique. Morphological, microstructural, structural and thermal characterizations of the powders milled several times were investigated by scanning electron microscopy, X-ray diffraction and differential scanning calorimetry. The patterns obtained were analyzed using the Rietveld refinement. The final products of the mechanically alloying process were a duplex nanostructure of Fe(Ni,Zr,B) and Fe2B type boride nanocrystals. The increase of mechanical milling induced a continuous decrease in the crystallite sizes and an increase in the lattice strains. Recovery, recrystallization and ferro-paramagnetic transition at Curie temperature are revealed in the thermal analysis in the temperature range 35-700°C.
A. Sekri, M. Mhadhbi, L. Escoda, J. J. Suñol, M. Khitouni, T. Makhlouf
Fe-Ni-Zr-B alloy, X-ray methods, Nanostructures, High energy ball milling
Pages 49-56
