| CONDENSED MATTER: STRUCTURE, MECHANICAL AND THERMAL PROPERTIES |
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Strain Avalanches in Microsized Single Crystals: Avalanche Size Predicted by a Continuum Crystal Plasticity Model |
| Xu Zhang1,2**, Xiang-Cheng Zhang1, Qian Li1, Fu-Lin Shang2 |
1National Center for International Joint Research of Micro-nano Moulding Technology, School of Mechanics and Engineering Science, Zhengzhou University, Zhengzhou 450001
2State Key Laboratory for Strength and Vibration of Mechanical Structures, School of Aerospace, Xi'an Jiaotong University, Xi'an 710049
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| Cite this article: |
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Xu Zhang, Xiang-Cheng Zhang, Qian Li et al 2016 Chin. Phys. Lett. 33 106401 |
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Abstract Plastic deformation of small crystals occurs by power-law distributed strain avalanches whose universality is still debated. In this work we introduce a continuum crystal plasticity model for the deformation of microsized single crystals, which is able to reproduce the main experimental observations such as flow intermittency and statistics of strain avalanches. We report exact predictions for scaling exponents and scaling functions associated with random distribution of avalanche sizes. In this way, the developed model provides a routine for a quantitative characterization of the statistical aspects of strain avalanches in microsized single crystals.
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Received: 04 July 2016
Published: 27 October 2016
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| PACS: |
64.60.av
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(Cracks, sandpiles, avalanches, and earthquakes)
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62.20.fq
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(Plasticity and superplasticity)
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62.20.F-
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(Deformation and plasticity)
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| Fund: Supported by the China Postdoctoral Science Foundation under Grant No 2015M572118, the Outstanding Young Talent Research Fund of Zhengzhou University under Grant No 1521327001, and the National Natural Science Foundation of China under Grant No 51405452. |
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