PREFERENTIAL PRECIPITATION SEQUENCE OF METASTABLE PHASE DURING CRYSTALLIZATION OF (FE0.99MO0.01)(78)SI9B13 METALLIC-GLASS

A preferential precipitation sequence of metastable phase formation du ring crystallization of an amorphous alloy (Fe0.99Mo0.01)(78)Si9B13 wa s revealed as following: alpha-Fe(Si, Mo) (bcc) --> (Fe,Mo)(3)B (BCT), (Fe,Mo)(3.0)B (BCT), and (Fe,Mo)(23)B-6 (fcc) --> Fe2B. An ordering p rocess of atom cluster occurs prior to the crystallization. Above expe rimental sequence of crystallization of (Fe0.99Mo0.01)(78)Si9B13 metal lic glass could be understood in terms of the Gaskell model, There is a high strain (0.33%) in the alpha-Fe(Si, Mo) (bcc) grain with 37 nm, and the strain relaxation leads to the distortion in the lattice param eter of nanocrystallite. (C) 1996 American Institute of Physics.