Ploughing friction and nanohardness dependent on the tip tilt in nano-scratch test for single crystal gold

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	Ploughing friction and nanohardness dependent on the tip tilt in nano-scratch test for single crystal gold
	Liu XM; Liu XM(刘小明); Liu ZL; Wei YG(魏悦广); Liu XM(刘小明); Wei YG(魏悦广)
刊名	COMPUTATIONAL MATERIALS SCIENCE
	2015-12
通讯作者邮箱	Xiaomingliu@lnm.imech.ac.cn ; liuzhanli@mail.tsinghua.edu.cn ; ywei@lnm.imech.ac.cn
卷号	110 页码:54-61
关键词	Nano-friction Tilt effect Pile-up Local plasticity
ISSN号	0927-0256
通讯作者	Liu, XM (reprint author), Chinese Acad Sci, Inst Mech, LNM, Beijing 100190, Peoples R China.
产权排序	[Liu, Xiaoming; Wei, Yueguang] Chinese Acad Sci, Inst Mech, LNM, Beijing 100190, Peoples R China; [Liu, Zhanli] Tsinghua Univ, AML, Sch Aerosp, Beijing 100084, Peoples R China
中文摘要	Different from macro-scale scratch, in nano-scale scratch test, the scratching tip is easily tilted, which may display a considerable change of the friction behavior. The ploughing friction and nanohardness dependent on the tip tilt in nano-scratch test for single crystal gold is studied in this paper by using molecular dynamics simulations. The results show that tilting forward (backward) to the scratch direction has a larger effect on the friction coefficient than the case of tilting laterally to the scratch direction. Scratch hardness is also sensitive to the tip tilting forward (backward), while it is insensitive to the tip tilting laterally. Moreover, the local plastic behaviors near tip (pile-up, plastic area, and dislocation evolution) are also dependent on the tip tilt, which may be a major contribution to the mechanism of the nano-scale wear. (C) 2015 Elsevier B.V. All rights reserved.
分类号	二类/Q2
类目[WOS]	Materials Science, Multidisciplinary
研究领域[WOS]	Materials Science
关键词[WOS]	MOLECULAR-DYNAMICS ; MD SIMULATION ; SAMPLE TILT ; NANOINDENTATION ; NANOSCALE ; BEHAVIOR ; SCALE
收录类别	SCI ; EI
原文出处	http://dx.doi.org/10.1016/j.commatsci.2015.07.051
语种	英语
WOS记录号	WOS:000362010800007
内容类型	期刊论文
源URL	[http://dspace.imech.ac.cn/handle/311007/58405]
专题	力学研究所_非线性力学国家重点实验室
推荐引用方式 GB/T 7714	Liu XM,Liu XM,Liu ZL,et al. Ploughing friction and nanohardness dependent on the tip tilt in nano-scratch test for single crystal gold[J]. COMPUTATIONAL MATERIALS SCIENCE,2015,110:54-61.
APA	Liu XM,刘小明,Liu ZL,魏悦广,Liu XM,&Wei YG.(2015).Ploughing friction and nanohardness dependent on the tip tilt in nano-scratch test for single crystal gold.COMPUTATIONAL MATERIALS SCIENCE,110,54-61.
MLA	Liu XM,et al."Ploughing friction and nanohardness dependent on the tip tilt in nano-scratch test for single crystal gold".COMPUTATIONAL MATERIALS SCIENCE 110(2015):54-61.