An assessment of Fe-Nb-B melts using the two-state liquid model
| Autor: | Walter José Botta, A. Costa e Silva, Ebert D. M. Alvares, John Ågren |
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| Rok vydání: | 2020 |
| Předmět: |
010302 applied physics
Work (thermodynamics) Materials science Chemical substance Ternary numeral system Amorphous metal General Chemical Engineering 0211 other engineering and technologies Complex system Thermodynamics 02 engineering and technology General Chemistry 01 natural sciences Computer Science Applications 0103 physical sciences Supercooling Science technology and society CALPHAD 021102 mining & metallurgy |
| Zdroj: | Calphad. 68:101692 |
| ISSN: | 0364-5916 |
| Popis: | Amorphous alloys of the (Fe-Co-Ni)-(Cr-Mo-Nb)-B system are promising materials to supply the demands for higher wear resistance components in the petrochemical industry. Since the development of the CALPHAD method, the development of new metallic alloys has been accompanied by thermodynamic modelling and calculations. The prediction of the formation of amorphous alloys requires special care with the modeling of the liquid and or an amorphous phase. As a initial stage in the more complex system, the basic Fe-Nb-B ternary system was selected. In order to predict the stability and tendencies of transformations of these amorphous alloys, the Fe-Nb-B system was reassessed using Agren's two-state model to describe the liquid phase. The results of the present assessment show very good agreement with the recently reported stable phase diagram. Furthermore, the use of the two-state model for the liquid is more accurate and physically consistent when evaluating transformations from supercooled liquid, as shown it the present work. |
| Databáze: | OpenAIRE |
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