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Ploughing friction and nanohardness dependent on the tip tilt in nano-scratch test for single crystal gold
Liu XM(刘小明); Liu ZL; Wei YG(魏悦广); Liu, XM (reprint author), Chinese Acad Sci, Inst Mech, LNM, Beijing 100190, Peoples R China.
Source PublicationCOMPUTATIONAL MATERIALS SCIENCE
2015-12
Volume110Pages:54-61
ISSN0927-0256
Abstract

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.

KeywordNano-friction Tilt Effect Pile-up Local Plasticity
DOI10.1016/j.commatsci.2015.07.051
URL查看原文
Indexed BySCI ; EI
Language英语
WOS IDWOS:000362010800007
WOS KeywordMOLECULAR-DYNAMICS ; MD SIMULATION ; SAMPLE TILT ; NANOINDENTATION ; NANOSCALE ; BEHAVIOR ; SCALE
WOS Research AreaMaterials Science
WOS SubjectMaterials Science, Multidisciplinary
Funding OrganizationWe acknowledge the financial support from the National Natural Science Foundation of China (Nos. 11202214, 91216108, 11302115), the National Basic Research Programs of China (No. 2012CB937500), from the State Key Laboratory of Mechanics and Control of Mechanical Structures (NUAA No. MCMS-0114G01), and the CAS/SAFEA International Partnership Program for Creative Research Teams. We thank the insightful discussions with Prof. Erik Van der Giessen from Groningen University, the Netherlands. We thank the useful comments from Prof. Zhuping Huang from Peiking University, China.
DepartmentLNM新型材料及结构的多尺度力学
Citation statistics
Cited Times:5[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://dspace.imech.ac.cn/handle/311007/58405
Collection非线性力学国家重点实验室
Recommended Citation
GB/T 7714
Liu XM,Liu ZL,Wei YG,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,Liu ZL,Wei YG,&Liu, XM .(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.
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