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Open AccessArticle

Atomistic Simulation Study of Nanoparticle Effect on Nano-Cutting Mechanisms of Single-Crystalline Materials

1
School of Mechatronics Engineering, Harbin Institute of Technology, No. 92, Xidazhi Street, Nangang District, Harbin 150001, China
2
Qian Xuesen Laboratory of Space Technology, No. 104, Youyi Road, Haidian District, Beijing 100094, China
*
Authors to whom correspondence should be addressed.
Micromachines 2020, 11(3), 265; https://doi.org/10.3390/mi11030265
Received: 14 February 2020 / Revised: 25 February 2020 / Accepted: 1 March 2020 / Published: 4 March 2020
Nanoparticle (NP), as a kind of hard-to-machine component in nanofabrication processes, dramatically affects the machined surface quality in nano-cutting. However, the surface/subsurface generation and the plastic deformation mechanisms of the workpiece still remain elusive. Here, the nano-cutting of a single-crystalline copper workpiece with a single spherical embedded nanoparticle is explored using molecular dynamics (MD) simulations. Four kinds of surface/subsurface cases of nanoparticle configuration are revealed, including being removed from the workpiece surface, moving as a part of the cutting tool, being pressed into the workpiece surface, and not interacting with the cutting tool, corresponding to four kinds of relative depth ranges between the center of the nanoparticle and the cutting tool. Significantly different plastic deformation mechanisms and machined surface qualities of the machined workpiece are also observed, suggesting that the machined surface quality could be improved by adjusting the cutting depth, which results in a change of the relative depth. In addition, the nanoparticle also significantly affects the processing forces in nano-cutting, especially when the cutting tool strongly interacts with the nanoparticle edge. View Full-Text
Keywords: nanoparticle; nano-cutting; plastic deformation; surface quality; molecular dynamics nanoparticle; nano-cutting; plastic deformation; surface quality; molecular dynamics
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MDPI and ACS Style

Zhao, P.; Zhang, Q.; Guo, Y.; Liu, H.; Deng, Z. Atomistic Simulation Study of Nanoparticle Effect on Nano-Cutting Mechanisms of Single-Crystalline Materials. Micromachines 2020, 11, 265.

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