Molecular dynamics study on the nanoscale repeated friction and wear mechanisms of TiC/Ni composites

doi:10.1007/s00339-022-05414-2

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	Molecular dynamics study on the nanoscale repeated friction and wear mechanisms of TiC/Ni composites
	Zheng, Min; Qu, Dingfeng; Wei, Xingchun; Zhang, Zhou; Zhu, Zongxiao; Wang, Linjun; Chen, Weihua
刊名	Applied Physics A: Materials Science and Processing
	2022-04-01
卷号	128 期号:4
关键词	Abrasion Atoms Defects Friction Grinding (machining) Morphology Nickel Nickel compounds Titanium carbide Wear resistance Dynamic studies Friction and wear Friction force Friction mechanism Friction process Grinding balls Nano scale Nickel-based composites Structural defect Workpiece
ISSN号	0947-8396
DOI	10.1007/s00339-022-05414-2
英文摘要	In this study, the molecular dynamics method was used to simulate the process of repeated friction of TiC/Ni composites under a hard diamond grinding ball and the mechanical properties of abrasion depth and morphology, wear rate, atomic displacement, internal defect evolution, and temperature, were systematically investigated during multiple friction processes. It was found that when the action of the grinding ball on the workpiece is transmitted to the TiC phase, extreme value of friction force appears, the depth of the abrasion marks is shallow, the number of atoms in the workpiece that undergo large displacements is low, the atoms exhibit a tendency to bypass the TiC phase for displacement, and the TiC is subjected to external action energy, which leads to an increase in temperature and discontinuity in the workpiece temperature distribution. During repeated friction processes, the friction force reaches a maximum, the friction coefficient fluctuates drastically, the increment in the abrasion depth decreases, the large structural defects generated by initial friction events are decomposed into small structural defects or stable laminar dislocation tetrahedral structures leading to the formation of dislocation entanglement which improves the overall wear resistance of the workpiece, the temperature of the TiC increases rapidly, and the temperature difference compared to the substrate gradually increases. © 2022, The Author(s), under exclusive licence to Springer-Verlag GmbH, DE part of Springer Nature.
WOS研究方向	Materials Science ; Physics
语种	英语
出版者	Springer Science and Business Media Deutschland GmbH
WOS记录号	WOS:000768287800004
内容类型	期刊论文
源URL	[http://ir.lut.edu.cn/handle/2XXMBERH/157971]
专题	机电工程学院
作者单位	School of Mechanical and Electrical Engineering, Lanzhou University of Technology, Lanzhou; 730050, China
推荐引用方式 GB/T 7714	Zheng, Min,Qu, Dingfeng,Wei, Xingchun,et al. Molecular dynamics study on the nanoscale repeated friction and wear mechanisms of TiC/Ni composites[J]. Applied Physics A: Materials Science and Processing,2022,128(4).
APA	Zheng, Min.,Qu, Dingfeng.,Wei, Xingchun.,Zhang, Zhou.,Zhu, Zongxiao.,...&Chen, Weihua.(2022).Molecular dynamics study on the nanoscale repeated friction and wear mechanisms of TiC/Ni composites.Applied Physics A: Materials Science and Processing,128(4).
MLA	Zheng, Min,et al."Molecular dynamics study on the nanoscale repeated friction and wear mechanisms of TiC/Ni composites".Applied Physics A: Materials Science and Processing 128.4(2022).