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Structural evolution of the mechanically alloyed Fe62Nb8B30powder mixtures

Auteurs : A.HAMOUDA, S. Alleg1, S. Azzaza1, R. Bensalem1 and J. J. Sunõl2
Année : 2008
Domaine : Sciences des matériaux
Type : Communication
Conférence: the fifth international congress on materials science and engineering CISGM-5
Résumé en PDF : (résumé en pdf)
Fulltext en PDF : (.pdf)
Mots clés : nanostructures, powder metallurgy

Résumé :

Fe62Nb8B30 amorphous alloy was prepared by mechanical alloying in a planetary ball mill from pure elemental powders. Structural properties of the milled powders were investigated by X-ray diffraction. The mixing of Nb and B leads to the formation of a bcc Nb(B) solid solution after 1 h of milling. A highly disordered Fe(Nb, B) structure in addition to a small amount of the un-reacted α-Fe and the bcc Nb(B) solid solution are obtained after 25 h of milling. The amorphous state is reached onfurther milling (up to 125 h).