Glass-forming ability and microstructural evolution of [(Fe0.6Co0.4)0.75Si0.05B0.20]96-xNb4Mx metallic glasses studied by Mossbauer spectroscopy

JOURNAL OF ALLOYS AND COMPOUNDS

卷:704

Article

Torrens-Serra, J.¹  Bruna, P.²  Stoica, M.^3,6  Eckert, J.^4,5 

[1] Univ IIles Balears, Dept Fis, Cra Valldemossa km 7 5, E-07122 Palma de Mallorca, Spain

[2] Univ Politecn Cataluna, Dept Fis, Barcelona Tech, Esteve Terradas 5, E-08860 Castelldefels, Spain

[3] IFW Dresden, Inst Komplexe Mat, Helmholtzstr 20, D-01069 Dresden, Germany

[4] Austrian Acad Sci, Erich Schmid Inst Mat Sci, Jahnstr 12, A-8700 Leoben, Austria

[5] Univ Leoben, Dept Mat Phys, Jahnstr 12, A-8700 Leoben, Austria

[6] Swiss Fed Inst Technol, Dept Mat, Lab Met Phys & Technol, CH-8093 Zurich, Switzerland

关键词: Bulk metallic glasses;    Mossbauer spectroscopy;    Glass-forming ability;    Crystallization;   

DOI  :  10.1016/j.jallcom.2017.02.098

来源: Elsevier

【 摘 要 】

The effect of minor transition metals and rare earths on glass-forming ability, thermal stability and crystallization of [(Fe0.6Co0.4)(0.75)Si0.05B0.20](96-x)Nb4Mx alloys was investigated. The thermodynamic parameters traditionally used to predict the glass-forming ability have been calculated from calorimetric data and tested against mold casting. Only the addition of Zr and Mo allowed to cast 2 mm diameter rods, which does not correlate with predicted results. The microstructural evolution of the different alloys along the crystallization process has been studied by means of transmission Mossbauer spectroscopy showing for all studied compositions (FeCo)(23)B-6 as primary phase that remains stable in the fully crystallized samples. Moreover, the Mossbauer spectra allowed the identification of some paramagnetic phases not identified by conventional x-ray diffraction. (C) 2017 Elsevier B.V. All rights reserved.

【 授权许可】

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