| The chip-flow behaviors and formation mechanisms in the orthogonal cutting process of Ti6Al4V alloy | |
Ma W(马维) ; Chen XY; Shuang F; Ma, W (reprint author), Chinese Acad Sci, Inst Mech, Beijing 100190, Peoples R China.
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| 发表期刊 | JOURNAL OF THE MECHANICS AND PHYSICS OF SOLIDS
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| 2017 | |
| 卷号 | 98页码:245-270 |
| ISSN | 0022-5096 |
| 摘要 | This work involves experimental and analytical investigations of chip flow stability in metal cutting process. First, in cutting experiments of Ti6Al4V alloy, the transformation of chip morphology from continuous to serrated and later to discontinuous was observed as the cutting speed increased. Scanning electron microscopic (SEM) observation of the shear fracture surface demonstrated shear-localized instability and intergranular failure behaviors. Then we used the improved orthogonal cutting model (OCM) to analyze the plastic flow process of work materials in a plane strain state. A corresponding governing equation system was set up, the dimensionless governing parameters were determined by dimensional analysis, and an instability criterion was established by linear perturbation analysis. Analytical results showed that the plastic instability of chip flow could take place in a continuous chip, which is different from the shear-localized instability in a serrated chip. Finally, in terms of the balance conditions between the kinetic energy and the surface energy, the sawtooth growth behavior in serrated chips and the formation mechanism of discontinuous chips were studied. |
| 关键词 | Metal Orthogonal Cutting Chip Flow Stability Plastic Instability Shear Deformation Localization Instability Criterion |
| DOI | 10.1016/j.jmps.2016.07.023 |
| URL | 查看原文 |
| 收录类别 | SCI ; EI |
| 语种 | 英语 |
| WOS记录号 | WOS:000390972900014 |
| 关键词[WOS] | Metal orthogonal cutting ; Chip flow stability ; Plastic instability ; Shear deformation localization ; Instability criterion |
| WOS研究方向 | Materials Science ; Mechanics ; Physics |
| WOS类目 | Materials Science, Multidisciplinary ; Mechanics ; Physics, Condensed Matter |
| 项目资助者 | Key National Nature Science Foundation of China [11132011] ; National Nature Science Foundation of China [11572337, 51575029] |
| 课题组名称 | LMFS工程地质体力学(LEM) |
| 论文分区 | 一类/力学重要期刊 |
| 力学所作者排名 | 1 |
| 引用统计 | |
| 文献类型 | 期刊论文 |
| 条目标识符 | http://dspace.imech.ac.cn/handle/311007/59968 |
| 专题 | 流固耦合系统力学重点实验室 |
| 通讯作者 | Ma, W (reprint author), Chinese Acad Sci, Inst Mech, Beijing 100190, Peoples R China. |
| 推荐引用方式 GB/T 7714 | Ma W,Chen XY,Shuang F,et al. The chip-flow behaviors and formation mechanisms in the orthogonal cutting process of Ti6Al4V alloy[J]. JOURNAL OF THE MECHANICS AND PHYSICS OF SOLIDS,2017,98:245-270. |
| APA | 马维,Chen XY,Shuang F,&Ma, W .(2017).The chip-flow behaviors and formation mechanisms in the orthogonal cutting process of Ti6Al4V alloy.JOURNAL OF THE MECHANICS AND PHYSICS OF SOLIDS,98,245-270. |
| MLA | 马维,et al."The chip-flow behaviors and formation mechanisms in the orthogonal cutting process of Ti6Al4V alloy".JOURNAL OF THE MECHANICS AND PHYSICS OF SOLIDS 98(2017):245-270. |
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| IMCAS-J2016-344.pdf（3527KB） | 期刊论文 | 作者接受稿 | 开放获取 | CC BY-NC-SA | 浏览 下载 | |
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