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DOI | 10.1038/s41467-019-10390-y |
Velocity correlated crack front and surface marks in single crystalline silicon | |
Zhao, Lv1; Bardel, Didier1; Maynadier, Anne1,2; Nelias, Daniel1 | |
2019-06-07 | |
发表期刊 | NATURE COMMUNICATIONS
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ISSN | 2041-1723 |
出版年 | 2018 |
卷号 | 9 |
文章类型 | Article |
语种 | 英语 |
国家 | France |
英文摘要 | Single crystalline silicon fractures on low-energy cleavage planes such as (111) and (110). The crack propagation cannot accurately be predicted by linear elastic fracture mechanics since it does not account for small scale and inelastic phenomena such as atomic lattice trapping. Here we show that, under pure bending load, (110) cleavage in silicon single crystal rapidly accelerates to 3700 m/s without crack path deviation or crack branching, contrasting previous observations. We highlight that the crack front shape involves strong velocity dependence and presents a curvature jump during very high-speed crack growth. In addition, we observe special marks-a kind of periodic surface undulation-that exclusively arise on the rapid fracture surfaces, and we suggest that they are front wave traces resulting from an intrinsic local velocity fluctuation. This finding gives insight to the wavy nature of the crack front in the absence of material asperity. |
领域 | 资源环境 |
收录类别 | SCI-E |
WOS记录号 | WOS:000429003900001 |
WOS关键词 | DYNAMIC FRACTURE ; CLEAVAGE FRACTURE ; BRITTLE-FRACTURE ; INSTABILITIES ; ANISOTROPY ; WAVES ; DEFLECTION ; GROWTH ; ENERGY ; GLASS |
WOS类目 | Multidisciplinary Sciences |
WOS研究方向 | Science & Technology - Other Topics |
URL | 查看原文 |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/204399 |
专题 | 资源环境科学 |
作者单位 | 1.Univ Lyon, INSA Lyon, CNRS UMR5259, LaMCoS, F-69621 Lyon, France; 2.Univ Bourgogne Franche Comte, Dept Appl Mech, FEMTO ST Inst, CNRS UFC ENSMM UTBM, F-25000 Besancon, France |
推荐引用方式 GB/T 7714 | Zhao, Lv,Bardel, Didier,Maynadier, Anne,et al. Velocity correlated crack front and surface marks in single crystalline silicon[J]. NATURE COMMUNICATIONS,2019,9. |
APA | Zhao, Lv,Bardel, Didier,Maynadier, Anne,&Nelias, Daniel.(2019).Velocity correlated crack front and surface marks in single crystalline silicon.NATURE COMMUNICATIONS,9. |
MLA | Zhao, Lv,et al."Velocity correlated crack front and surface marks in single crystalline silicon".NATURE COMMUNICATIONS 9(2019). |
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