Mössbauer effect on mechanically alloyed Fe-Zr glasses

Abstract
Amorphous Fe-Zr powders have been prepared by mechanical alloying in a powder mill and studied by means of Mössbauer spectroscopy. It is shown, that, within the glass-forming range from about 30 to 78 at. % Fe, the local structure of the mechanically alloyed samples, detected by the Mössbauer effect, is the same as in the corresponding melt-spun or sputtered samples. The existence of a two-phase region above 78 at. % Fe between an amorphous phase and crystalline Fe confirms that amorphization by mechanical alloying is a metastable equilibrium process. There is evidence that mechanical alloying enhances the Zr solubility in Fe up to 5 at. %.