Chin. Phys. Lett.  2010, Vol. 27 Issue (7): 076103    DOI: 10.1088/0256-307X/27/7/076103
CONDENSED MATTER: STRUCTURE, MECHANICAL AND THERMAL PROPERTIES |
Influence of Rare-Earth Substitution for Iron in FeCrMoCB Bulk Metallic Glasses

Abderrezak Bouchareb1,2, Badis Bendjemil1,2,3, Rafael Piccin1, Marcello Baricco1

1Dipartimento di Chimica I.F.M/NIS/CNISM/INSTM, Universitádi Torino, Via Giuria 9, 10125 Torino, Italy 2Laboratoire d'Etude et la Recherche de l'Etat Condensé(LEREC), University of Badji Mokhtar P.O. Box 12, 23000 Annaba, Algeria 3University of Guelma, P.O. Box 12, 24000 Guelma, Algeria
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Abderrezak Bouchareb, Badis Bendjemil, Rafael Piccin et al  2010 Chin. Phys. Lett. 27 076103
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Abstract

The effects of rare earth addition on the glass forming ability of Fe50-xCr15Mo14C15B6Mx (x=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 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.

Keywords: 61.05.Cf      65.50.+m      62.20.F-      61.43.Dq     
Received: 07 January 2010      Published: 28 June 2010
PACS:  61.05.cf (X-ray scattering (including small-angle scattering))  
  65.50.+m  
  62.20.F- (Deformation and plasticity)  
  61.43.Dq (Amorphous semiconductors, metals, and alloys)  
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https://cpl.iphy.ac.cn/10.1088/0256-307X/27/7/076103       OR      https://cpl.iphy.ac.cn/Y2010/V27/I7/076103
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Articles by authors
Abderrezak Bouchareb
Badis Bendjemil
Rafael Piccin
Marcello Baricco
[1] Inoue A 2000 Acta Mater. 48 279
[2] Johnson W L 2002 J. Metals 54 40
[3] Niessen A K et al 1983 Calphad 7 51
[4] Zhang Y et al 2006 Appl. Phys. Lett. 89 131904
[5] Chen J et al 2006 Scripta Mater. 54 1351
[6] Chen Q J et al 2005 Chin. Phys. Lett. 22 1736
[7] Lu Z P et al 2004 Phys. Rev. Lett. 92 245503
[8] Lu Z P et al 2003 Appl. Phys. Lett. 83 2581
[9] Iqbal M et al 2008 J. Non-Cryst. Solids 354 3284
[10] Baser T A and Baricco M 2006 J. Alloy Compd. 190 14569
[11] Ponnambalam V et al 2004 J. Mater. Res. 19 1320
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