Glass-forming ability and microstructural evolution of [(Fe0.6Co0.4)0.75Si0.05B0.20]96-xNb4Mx metallic glasses studied by Mössbauer spectroscopy
The effect of minor transition metals and rare earths on glass-forming ability, thermal stability and crystallization of [(Fe0.6Co0.4)0.75Si0.05B0.20]96-xNb4Mx alloys was investigated. The thermodynamic parameters traditionally used to predict the glass-forming ability have been calculated from calo...
| Autores: | , , , |
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| Tipo de recurso: | artículo |
| Fecha de publicación: | 2017 |
| País: | España |
| Institución: | Universitat Politècnica de Catalunya (UPC) |
| Repositorio: | UPCommons. Portal del coneixement obert de la UPC |
| Idioma: | inglés |
| OAI Identifier: | oai:upcommons.upc.edu:2117/104202 |
| Acceso en línea: | https://hdl.handle.net/2117/104202 https://dx.doi.org/10.1016/j.jallcom.2017.02.098 |
| Access Level: | acceso abierto |
| Palabra clave: | Mössbauer spectroscopy Bulk solids Cristallization Metallic glasses Bulk metallic glasses Mössbauer spectroscopy Glass-forming ability Crystallization Espectroscòpia Mössbauer Vidres metàl·lics Àrees temàtiques de la UPC::Enginyeria dels materials |
| Sumario: | The effect of minor transition metals and rare earths on glass-forming ability, thermal stability and crystallization of [(Fe0.6Co0.4)0.75Si0.05B0.20]96-xNb4Mx 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 Mössbauer spectroscopy showing for all studied compositions (FeCo)23B6 as primary phase that remains stable in the fully crystallized samples. Moreover, the Mössbauer spectra allowed the identification of some paramagnetic phases not identified by conventional x-ray diffraction. |
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