Dynamic mechanical relaxation behavior of binary metallic glasses
Secondary ß relaxation is a fundamental issue to understand the diffusion, plasticity and glass transition behavior of metallic glasses. Binary metallic glasses provide a simple glassy system to probe the dynamic mechanical processes. In the current research, dynamic mechanical behavior of the typic...
| Autores: | , , , , , , |
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| Tipo de recurso: | artículo |
| Fecha de publicación: | 2021 |
| 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:2117/345968 |
| Acceso en línea: | https://hdl.handle.net/2117/345968 https://dx.doi.org/10.1016/j.intermet.2020.107075 |
| Access Level: | acceso abierto |
| Palabra clave: | Metallic glasses Binary metallic glass Mechanical relaxation Secondary relaxation Structural heterogeneity Vidres metàl·lics Àrees temàtiques de la UPC::Física |
| Sumario: | Secondary ß relaxation is a fundamental issue to understand the diffusion, plasticity and glass transition behavior of metallic glasses. Binary metallic glasses provide a simple glassy system to probe the dynamic mechanical processes. In the current research, dynamic mechanical behavior of the typical binary metallic glasses was investigated by dynamic mechanical analysis (DMA). The dynamic mechanical relaxation behavior of Cu50-xTi50+x (x = 0, 7 and 9) and CuxZr100-x (x = 30, 50, 56, 61.8 and 64) binary metallic glass system was studied. It is found that the ß relaxation becomes pronounced with the increase of copper, which is analyzed in the framework of the principle of mixing enthalpy. However, the ß relaxation of CuZr or CuTi binary metallic glasses is much more modest than that of Y65Co35, Dy65Co35 and Y67Cu33. |
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