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Chip formation dependence of machining velocities in nano-scale by molecular dynamics simulations
Su H; Tang QH(汤奇恒); Tang, QH (reprint author), Chinese Acad Sci, Inst Mech, State Key Lab Nonlinear Mech, Beijing 100190, Peoples R China.
Source PublicationSCIENCE CHINA-TECHNOLOGICAL SCIENCES
2014-12
Volume57Issue:12Pages:2426-2433
ISSN1674-7321
AbstractIn this study, molecular dynamics simulations were carried out to study the effect of machining velocities on the mechanism of chip formation in nano-metric copper. A wide range of cutting velocities was performed from 10 to 2000 m/s, and the microstructure's evolution from a crystalline state to an amorphous state was studied. At the low machining velocity, dislocations were generated from the surface in front of the tool, and the immobile dislocation deduced by the cross slip of dislocation was observed. At the high machining velocity, no crystal dislocation nucleated, but instead disorder atoms were found near the tool. Temperature near the tool region increased with the increasing machining velocities, and the temperature had an important effect on the phase transition of the crystal structure.
KeywordMolecular Dynamics Chip Formation Machining Velocities Phase Transition
Subject AreaEngineering ; Materials Science
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Indexed BySCI ; EI
Language英语
WOS IDWOS:000346239500013
Funding OrganizationThe research was supported by the National Natural Science Foundation of China (Grant Nos. 11132011, 11021262 and 11172303), and the National Basic Research Program of China ("973" Project) (Grant No. 2012CB937500).
DepartmentLNM固体物理力学
Classification二类/Q2
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Cited Times:2[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://dspace.imech.ac.cn/handle/311007/49480
Collection非线性力学国家重点实验室
Corresponding AuthorTang, QH (reprint author), Chinese Acad Sci, Inst Mech, State Key Lab Nonlinear Mech, Beijing 100190, Peoples R China.
Recommended Citation
GB/T 7714
Su H,Tang QH,Tang, QH . Chip formation dependence of machining velocities in nano-scale by molecular dynamics simulations[J]. SCIENCE CHINA-TECHNOLOGICAL SCIENCES,2014,57(12):2426-2433
APA Su H,汤奇恒,&Tang, QH .(2014).Chip formation dependence of machining velocities in nano-scale by molecular dynamics simulations.SCIENCE CHINA-TECHNOLOGICAL SCIENCES,57(12),2426-2433.
MLA Su H,et al."Chip formation dependence of machining velocities in nano-scale by molecular dynamics simulations".SCIENCE CHINA-TECHNOLOGICAL SCIENCES 57.12(2014):2426-2433.
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