Molecular Dynamics Simulation of Chip Morphology in Nanogrinding of Monocrystalline Nickel

doi:10.3390/coatings12050647

CORC > 兰州理工大学 > 兰州理工大学 > 机电工程学院

	Molecular Dynamics Simulation of Chip Morphology in Nanogrinding of Monocrystalline Nickel
	Wei, Xingchun; Wang, Xiaowen; Qu, Dingfeng; Zhu, Zongxiao; Chen, Weihua; Chen, Wenbang; Shi, Tianzuo; Peng, Bin
刊名	COATINGS
	2022-05-01
卷号	12 期号:5
关键词	monocrystalline nickel molecular dynamics chip morphology spherical chip strip chip atomic kinetic energy
DOI	10.3390/coatings12050647
英文摘要	In this study, the nanogrinding process for single-crystal nickel was investigated using a molecular dynamics simulation. A series of simulations were conducted with different tool radii and grinding methods to explore the effects of chip morphology, friction forces, subsurface damage, and defect evolution on the nanogrinding process. The results demonstrate that the workpiece atoms at the back of the tool were affected by the forward stretching and upward elastic recovery when no chips were produced. Although the machining depth was the smallest, the normal force was the largest, and dislocation entanglement was formed. The small number of defect atoms indicates that the extent of subsurface damage was minimal. Moreover, when spherical chips were produced, a typical columnar defect was generated. The displacement vector of the chip atoms aligned with the machining direction and as the chips were removed by extrusion, the crystal structure of the chip atoms disintegrated, resulting in severe subsurface damage. By contrast, when strip chips were produced, the displacement vector of the chip atoms deviated from the substrate, dislocation blocks were formed at the initial stage of machining, and the rebound-to-depth ratio of the machined surface was the smallest.
WOS研究方向	Materials Science ; Physics
语种	英语
出版者	MDPI
WOS记录号	WOS:000801264600001
内容类型	期刊论文
源URL	[http://ir.lut.edu.cn/handle/2XXMBERH/158655]
专题	机电工程学院
作者单位	Lanzhou Univ Technol, Sch Mech & Elect Engn, Lanzhou 730050, Peoples R China
推荐引用方式 GB/T 7714	Wei, Xingchun,Wang, Xiaowen,Qu, Dingfeng,et al. Molecular Dynamics Simulation of Chip Morphology in Nanogrinding of Monocrystalline Nickel[J]. COATINGS,2022,12(5).
APA	Wei, Xingchun.,Wang, Xiaowen.,Qu, Dingfeng.,Zhu, Zongxiao.,Chen, Weihua.,...&Peng, Bin.(2022).Molecular Dynamics Simulation of Chip Morphology in Nanogrinding of Monocrystalline Nickel.COATINGS,12(5).
MLA	Wei, Xingchun,et al."Molecular Dynamics Simulation of Chip Morphology in Nanogrinding of Monocrystalline Nickel".COATINGS 12.5(2022).