Cutting characteristics of monocrystalline silicon in elliptical vibration nano-cutting using molecular dynamics method

Su, Zhipeng; Liang, Zhiqiang; Du, Yong; Zhou, Hai; Ma, Yue; Qiu, Tianyang; Zhao, Lei; Zhou, Tianfeng; Wang, Xibin

doi:10.1016/j.commatsci.2022.111589

Cited by 9 publications

(1 citation statement)

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“…The red indicates tensile stress, and the blue presents compressive stress. The results suggest that the compressive stress of the CoCuFeNiPd HEA sample concentrates under and in front of the cutting tool because of the cutting force and pile-up of atoms [38,39]. The cutting tool goes through, leaving residual tensile stress on the machined surface due to the elastic recovery of the sample surface, as shown in figures 3(a2) and (b2).…”

Section: The Cutting Processmentioning

confidence: 94%

Material deformation mechanism of lamellar twined high–entropy alloys during machining

Vu,

Pham,

Fang

2024

Modelling Simul. Mater. Sci. Eng.

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The effects of sample structure and tool geometry are studied under cutting simulation to verify the deformation, removal mechanisms, and subsurface defection of lamellar twined CoCuFeNiPd alloys. These findings suggest that the twin boundary spacing and twin inclination angle (β) are the main determinants of surface wear characteristics and cutting-induced surface harm. The maximum cutting force achieved with TBS = 8a and β =900. The high friction coefficient with the sample has TBS = 8a and β = 900, showing that the tool's moving in the substrate is strongly restricted. Furthermore, the surface topography is not sensitive to the TBS and β. The best-machined surface is achieved with TBS = 3a and 4a under twin inclinations of 0 and 300. The effect of edge radius (R), rake angle (γ), and clearance angle (α) on the deformation behavior is examined. The negative of γ, small α, or larger R results in a higher cutting force, a worse subsurface, and a lower cutting pile-up height. With a positive γ, a large α or small R has a larger average friction coefficient, which implies a higher resistance rate. The tool with a smaller R or positive γ can improve the machined surface's smoothness.

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Section: The Cutting Processmentioning

confidence: 94%