Structural investigation of the high-energy milled Fe-Si system

The binary Fe-Si powdered system (3 : 1 in atomic proportion) has been milled for different times in a planetary bah mill. The changes in microstructure of mechanochemical prepared samples were performed using XRD and Mossbauer spectroscopy. The alloying process was divided into three stages. The first region is associated with the crystalline-to-amorphous phase transition of Si as well as with the introduction of defects into the more easily disturbed Fe particles. Tn the second region the large structural changes in BCC-Fe-lattice were observed, which indicated the partial formation of the solid solution. In the third region the mechanically induced ordering of Fe3Si takes place. (C) 1999 Elsevier Science B.V. All rights reserved.