Wavelike fracture pattern in a metallic glass: a Kelvin-Helmholtz flow instability
文献类型：期刊论文
| 作者 | Jiang MQ(蒋敏强) ; Wilde G; Qu CB; Jiang F; Xiao HM; Chen JH; Fu SY; Dai LH(戴兰宏)
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| 刊名 | PHILOSOPHICAL MAGAZINE LETTERS
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| 出版日期 | 2014-10-03 |
| 卷号 | 94期号:10页码:669-677 |
| 通讯作者邮箱 | mqjiang@imech.ac.cn; lhdai@lnm.imech.ac.cn |
| 关键词 | metallic glass Kelvin-Helmholtz instability fracture pattern |
| ISSN号 | 0950-0839 |
| 产权排序 | [Jiang, M. Q.; Chen, J. H.; Dai, L. H.] Chinese Acad Sci, Inst Mech, State Key Lab Nonlinear Mech, Beijing 100190, Peoples R China; [Jiang, M. Q.; Wilde, G.] Univ Munster, Inst Mat Phys, D-48149 Munster, Germany; [Qu, C. B.; Xiao, H. M.; Fu, S. Y.] Chinese Acad Sci, Tech Inst Phys & Chem, Beijing 100190, Peoples R China; [Jiang, F.] Xi An Jiao Tong Univ, State Key Lab Mech Behav Mat, Xian 710049, Peoples R China |
| 通讯作者 | Jiang, MQ (reprint author), Chinese Acad Sci, Inst Mech, State Key Lab Nonlinear Mech, Beijing 100190, Peoples R China. |
| 合作状况 | 国内 |
| 中文摘要 | We report a wavelike fracture pattern in a Zr-based bulk metallic glass that has been deformed under quasi-static uniaxial tensions between room temperature (300K) and liquid nitrogen temperature (77K). We attribute this wavelike pattern to a Kelvin-Helmholtz flow instability that occurs at certain interfaces between local cracking/softening regions. The instability criterion for the pattern formation is achieved via a hydrodynamic perturbation analysis, and furthermore, an instability map is built which demonstrates that the shear velocity difference on both sides of the interface is the main destabilizing factor. Finally, the characteristic instability time (the inverse of the instability growth rate) is explored by seeking the dispersion relation in the dominant (fastest) instability mode. The results increase the understanding of the flow and fracture of metallic glasses as well as the nature of their liquid structures. |
| 学科主题 | Physics |
| 分类号 | Q3 |
| 收录类别 | SCI ; EI |
| 资助信息 | Financial support is from the NSFC [grants number 11372315], [grants number 11132011], [grants number 11023001], [grants number 51171138] and the National Key Research Program of China [grants number 2012CB937500]. |
| 原文出处 | http://dx.doi.org/10.1080/09500839.2014.955549 |
| 语种 | 英语 |
| WOS记录号 | WOS:000348938400007 |
| 公开日期 | 2015-03-11 |
| 源URL | [http://dspace.imech.ac.cn/handle/311007/49563]  |
| 专题 | 力学研究所_非线性力学国家重点实验室 |
| 推荐引用方式 GB/T 7714 | Jiang MQ,Wilde G,Qu CB,et al. Wavelike fracture pattern in a metallic glass: a Kelvin-Helmholtz flow instability[J]. PHILOSOPHICAL MAGAZINE LETTERS,2014,94(10):669-677. |
| APA | 蒋敏强.,Wilde G.,Qu CB.,Jiang F.,Xiao HM.,...&戴兰宏.(2014).Wavelike fracture pattern in a metallic glass: a Kelvin-Helmholtz flow instability.PHILOSOPHICAL MAGAZINE LETTERS,94(10),669-677. |
| MLA | 蒋敏强,et al."Wavelike fracture pattern in a metallic glass: a Kelvin-Helmholtz flow instability".PHILOSOPHICAL MAGAZINE LETTERS 94.10(2014):669-677. |
入库方式： OAI收割
来源：力学研究所
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