Disappearance of plastic anisotropy in decagonal quasicrystals at small scales and room temperature
| Autor: | Ralph Spolenak, Walter Steurer, Pawel Kuczera, Yu Zou |
|---|---|
| Rok vydání: | 2016 |
| Předmět: |
010302 applied physics
Materials science Condensed matter physics Mechanical Engineering Quasicrystal Bioengineering 02 engineering and technology Plasticity 021001 nanoscience & nanotechnology 01 natural sciences Condensed Matter::Materials Science Crystallography Deformation mechanism Mechanics of Materials 0103 physical sciences Chemical Engineering (miscellaneous) Dislocation 0210 nano-technology Anisotropy Engineering (miscellaneous) |
| Zdroj: | Extreme Mechanics Letters. 8:229-234 |
| ISSN: | 2352-4316 |
| DOI: | 10.1016/j.eml.2016.02.005 |
| Popis: | Decagonal quasicrystals (DQCs), as a class of two-dimensional quasicrystals, are known to be highly anisotropic in most of their physical properties. Here we show that their plastic anisotropy can be considerably reduced, and even eliminated, when they are scaled down to the sub-micrometer regime and deformed at room temperature. The reduced plastic anisotropy might be attributed to both size and temperature dependence of dislocation activities. This finding may shed light on the exploration of new deformation mechanisms for quasicrystal plasticity in an unknown size and temperature regime. |
| Databáze: | OpenAIRE |
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