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. | |
发表期刊 | COMPUTATIONAL MATERIALS SCIENCE |
2015-12 | |
卷号 | 110页码:54-61 |
ISSN | 0927-0256 |
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. |
关键词 | Nano-friction Tilt Effect Pile-up Local Plasticity |
DOI | 10.1016/j.commatsci.2015.07.051 |
URL | 查看原文 |
收录类别 | SCI ; EI |
语种 | 英语 |
WOS记录号 | WOS:000362010800007 |
关键词[WOS] | MOLECULAR-DYNAMICS ; MD SIMULATION ; SAMPLE TILT ; NANOINDENTATION ; NANOSCALE ; BEHAVIOR ; SCALE |
WOS研究方向 | Materials Science |
WOS类目 | Materials Science, Multidisciplinary |
项目资助者 | We 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. |
课题组名称 | LNM新型材料及结构的多尺度力学 |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://dspace.imech.ac.cn/handle/311007/58405 |
专题 | 非线性力学国家重点实验室 |
推荐引用方式 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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