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. | |
发表期刊 | SCIENCE CHINA-TECHNOLOGICAL SCIENCES |
2014-12 | |
卷号 | 57期号:12页码:2426-2433 |
ISSN | 1674-7321 |
摘要 | In 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. |
关键词 | Molecular Dynamics Chip Formation Machining Velocities Phase Transition |
学科领域 | Engineering ; Materials Science |
URL | 查看原文 |
收录类别 | SCI ; EI |
语种 | 英语 |
WOS记录号 | WOS:000346239500013 |
项目资助者 | The 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). |
课题组名称 | LNM固体物理力学 |
论文分区 | 二类/Q2 |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://dspace.imech.ac.cn/handle/311007/49479 |
专题 | 非线性力学国家重点实验室 |
通讯作者 | Tang, QH (reprint author), Chinese Acad Sci, Inst Mech, State Key Lab Nonlinear Mech, Beijing 100190, Peoples R China. |
推荐引用方式 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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