Influence of Rare-Earth Substitution for Iron in FeCrMoCB Bulk Metallic Glasses

Abderrezak Bouchareb, Badis Bendjemil, Rafael Piccin, Marcello Baricco
2010 Chinese Physics Letters  
The effects of rare earth addition on the glass forming ability of Fe50− Cr15Mo14C15B6M ( =0, 2 and M=Y, Gd) bulks and ribbons are studied. The thermal and structural properties of the samples are measured by a combination of differential scanning calorimetry (DSC), x-ray diffraction and scanning electron microscopy. Chemical compositions are checked by energy dispersive spectroscopy analysis. The copper mold casting technique leads to a fully amorphous structure up to 2 mm only for
more » ... nly for compositions containing Y or Gd. In the case of ribbons, a fully amorphous phase is observed for all the compositions. The roles of Y and Gd are discussed on the basis of melting behavior analyzed by high-temperature DSC. Such elements act as oxygen scavengers, avoiding heterogeneous nucleation.
doi:10.1088/0256-307x/27/7/076103 fatcat:m7m7gfozcngspcypov3mhrsmse