The crystalline-to-amorphous transformations in the Ti-Fe and Ti(H sub 2 )-Fe systems during ball milling

Elemental equiatomic Ti-Fe as well as similar Ti(H sub 2 )-Fe powder mixtures were mechanically alloyed in ball mill. The structural changes as a function of milling time were investigated by x-ray diffractometry and low temperature Mossbauer spectroscopy. During milling the supersaturated solid solutions beta -Ti(Fe) and alpha -Fe(Ti) in wide range of composition, two intermetallic phases FeTi and Fe sub 2 Ti, formation and transformation up to quasi-amorphous state were observed. Furthermore in Fe-Ti(H2) system the MA process proceeds much slower and the formation of FeTi and FeTiH sub x phases and alpha -Fe(Ti) solid solutions were observed.