Strong-Superstrong Transition in Glass Transition of Metallic Glass
| Autor: | Chen Bao-Ling, XU Xiao-Yu, Peng Hong-Yan, Wang Dan, Sun Min-hua, WU Chun-Lei |
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| Rok vydání: | 2010 |
| Předmět: |
Materials science
Amorphous metal Condensed matter physics Phase separation process Scattering Alloy General Physics and Astronomy engineering.material Condensed Matter::Disordered Systems and Neural Networks Condensed Matter::Soft Condensed Matter Fragility engineering Supercooling Glass transition |
| Zdroj: | Chinese Physics Letters. 27:036401 |
| ISSN: | 1741-3540 0256-307X |
| Popis: | Dynamic fragility of bulk metallic glass (BMG) of Zr64Cu16Ni10Al10 alloy is studied by three-point beam bending methods. The fragility parameter mfor Zr64Cu16Ni10Al10 BMG is calculated to be 24.5 at high temperature, which means that the liquid is a "strong" liquid, while to be 13.4 at low temperature which means that the liquid is a "super-strong" liquid. The dynamical behavior of Zr64Cu16Ni10Al10 BMG in the supercooled region undergoes a strong to super-strong transition. To our knowledge, it is the first time that a strong-to-superstrong transition is found in the metallic glass. Using small angle x-ray scattering experiments, we find that this transition is assumed to be related to a phase separation process in supercooled liquid. |
| Databáze: | OpenAIRE |
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