Molecular dynamics simulation of the plastic behavior anisotropy of shock-compressed monocrystal nickel

Ya-Zhou Chen (), Liu-Cheng Zhou, Wei-Feng He, Yu Sun, Ying-Hong Li, Yang Jiao and Si-Hai Luo
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Ya-Zhou Chen: Key Laboratory of Plasma, Air Force Engineering University
Liu-Cheng Zhou: Key Laboratory of Plasma, Air Force Engineering University
Wei-Feng He: Key Laboratory of Plasma, Air Force Engineering University
Yu Sun: State Key Laboratory for Manufacturing Systems Engineering, School of Mechanical Engineering, X’ian Jiaotong University
Ying-Hong Li: Key Laboratory of Plasma, Air Force Engineering University
Yang Jiao: Key Laboratory of Plasma, Air Force Engineering University
Si-Hai Luo: Key Laboratory of Plasma, Air Force Engineering University

The European Physical Journal B: Condensed Matter and Complex Systems, 2017, vol. 90, issue 1, 1-7

Abstract: Abstract Molecular dynamics simulations were used to study the plastic behavior of monocrystalline nickel under shock compression along the [100] and [110] orientations. The shock Hugoniot relation, local stress curve, and process of microstructure development were determined. Results showed the apparent anisotropic behavior of monocrystalline nickel under shock compression. The separation of elastic and plastic waves was also obvious. Plastic deformation was more severely altered along the [110] direction than the [100] direction. The main microstructure phase transformed from face-centered cubic to body-centered cubic and generated a large-scale and low-density stacking fault along the family of { 111 } crystal planes under shock compression along the [100] direction. By contrast, the main mechanism of plastic deformation in the [110] direction was the nucleation of the hexagonal, close-packed phase, which generated a high density of stacking faults along the [110] and [1̅10] directions.

Keywords: Solid; State; and; Materials (search for similar items in EconPapers)
Date: 2017
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DOI: 10.1140/epjb/e2016-70388-7

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