Thermo-mechanical study of rapidly solidified NiNbZrTiAl amorphous metallic alloys
| Autor: | Lyudmil Drenchev, Tomasz Czeppe, Georgi Stefanov, Stoyko Gyurov, Krassimir Russew |
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| Rok vydání: | 2017 |
| Předmět: |
010302 applied physics
Materials science Mechanical Engineering Metallurgy Alloy 02 engineering and technology engineering.material 021001 nanoscience & nanotechnology Condensed Matter Physics 01 natural sciences Amorphous solid Metallic alloy Viscosity Volume (thermodynamics) Flexural strength Mechanics of Materials 0103 physical sciences engineering General Materials Science Thermal stability Composite material 0210 nano-technology Glass transition |
| Zdroj: | Materials Science and Engineering: A. 684:222-228 |
| ISSN: | 0921-5093 |
| DOI: | 10.1016/j.msea.2016.11.093 |
| Popis: | The thermal stability and viscous flow behaviour of fourrapidly solidified NiNbZrTiAl amorphous metallic alloys under constant heating rate conditions are studied using thermomechanical analyzer (TMA). The viscous flow results are discussed and interpreted in the framework of the Free Volume Model (FVM). The obtained values of FVM parameters are used for estimation of the glass forming ability (GFA) on the basis of the parameter of Angell. The lowest value of Angell's parameter m A (highest GFA) possesses the alloy Ni 58 Nb 10 Zr 13 Ti 12 Al 7 . The fracture strength of the alloys studied was estimated on the basis of their correlation with the alloys glass transition temperature T g according to the equation of Yang. It was determined that the maximum fracture strength possesses the alloy Ni 58 Nb 25 Zr 8 Ti 6 Al 3 . |
| Databáze: | OpenAIRE |
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