Molecular dynamics simulation of the nano-cutting mechanism of a high-phosphorus NiP coating

Li, Huang; Peng, Xiaoqiang; Guan, Chaoliang; Hu, Hao

doi:10.1016/j.jmrt.2023.04.257

Cited by 7 publications

(1 citation statement)

References 43 publications

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“…It is a method that can analyze the properties and structures of microscopic materials and materials-important simulation methods for evaluation and prediction [15][16][17]. Through advanced MD simulations, Li et al [18] investigated the genesis mechanisms of crystallographic defects in monocrystalline silicon during the elastic vibration cutting (EVC) process. The findings revealed a conspicuous preferential slip motion during the formation of subsurface damage, particularly evident within the EVC cutting, extrusion, and shear stages.…”

Section: Introductionmentioning

confidence: 99%

Molecular dynamic simulation of the influence of vibration effects on scratching processes in Varied crystal orientations

Qiu-Yang,

Zhen-Yu,

et al. 2023

Modelling Simul. Mater. Sci. Eng.

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The research delves into the uncharted terrain of crystal orientation’s effect on high-frequency vibration-assisted processing of single-crystal copper, employing molecular dynamics to devise non-vibration, one-dimensional (1D), and two-dimensional (2D) vibration-assisted scratching models. The innovative discovery is the ‘peak-shaving’ effect, invoked by high-frequency vibration, which significantly mitigates surface irregularities on single-crystal copper, enhancing surface quality and material plasticity, thereby facilitating machinability. A key revelation is the superior efficacy of 2D vibration in material fortification relative to 1D vibration. Another novel finding is the amplified plasticity of single-crystal copper with a (111) crystal orientation under vibration-assisted excitation, linked to the varying directions of dislocation slip contingent upon crystal orientations. The pioneering observation that the induction of vibration during scratching dynamically propels dislocation defect structures, leading to the generation of a significant volume of vacant and interstitial atomic sites, underscores the pronounced influence of 2D vibration. This research contributes invaluable microscopic perspectives into the operative mechanism of crystal orientation’s impact on high-frequency vibration-assisted processing.

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