Structure, mechanical properties and nanocrystallization of (FeCoCrNi)-(B,Si) high-entropy metallic glasses
New high-entropy metallic glasses were produced by adding B and Si to the Fe25Co25Cr25Ni25 high entropy alloy. Extremely hard materials were obtained by inducing structural relaxation and nanocrystallization in the original amorphous metals. In this work we study the effects of the composition and a...
| Autores: | , , , , , |
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| Tipo de recurso: | artículo |
| Fecha de publicación: | 2022 |
| 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:2117/360051 |
| Acceso en línea: | https://hdl.handle.net/2117/360051 https://dx.doi.org/10.1016/j.intermet.2021.107432 |
| Access Level: | acceso abierto |
| Palabra clave: | Metallic glasses High-entropy alloys Synchrotron radiation Nanoindentation Metallic glass Vidres metàl·lics Àrees temàtiques de la UPC::Física |
| Sumario: | New high-entropy metallic glasses were produced by adding B and Si to the Fe25Co25Cr25Ni25 high entropy alloy. Extremely hard materials were obtained by inducing structural relaxation and nanocrystallization in the original amorphous metals. In this work we study the effects of the composition and annealing treatments on the structure and the mechanical properties. The changes in structure during heating treatments were determined by in situ synchrotron X-ray diffraction and the mechanical behavior was studied by nanoindentation. The me- chanical properties of the as-quenched glasses were tuned through the annealing treatments, obtaining amor- phous/nanocrystalline composites appropriate for highly demanding, wear resistance applications. The relative amount of B and Si is shown to determine the main nanocrystalline phase, FCC or BCC, which has a key influence on the mechanical properties. |
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