Instability Of Crack Propagation In Brittle Bulk Metallic Glass
文献类型：期刊论文
| 作者 | Wang G ; Chan KC; Xu XH(许向红); Wang WH
|
| 刊名 | Acta Materialia
 |
| 出版日期 | 2008 |
| 页码 | 5845-5860 |
| 通讯作者邮箱 | mfkcchan@polyu.edu.hk |
| 关键词 | Metallic Glasses Fracture Scanning Electron Microscopy Atomic Force Microscopy Dynamic Fracture Flow Hyperelasticity Distributions Deformation Plasticity Mechanism Cleavage Behavior Liquid |
| ISSN号 | 1359-6454 |
| 通讯作者 | Chan, KC (reprint author), Hong Kong Polytech Univ, Dept Ind & Syst Engn, Yuk Choi Rd, Kowloon, Hong Kong, Peoples R China. |
| 中文摘要 | The instability of the crack tip in brittle Mg-based bulk metallic glass (BMG) is studied. The formation of various fractographic surfaces of the BMG is associated with the instability of the fluid meniscus, which is due to viscous fluid matter being present on the fracture process zone. Depending on the values of the wavelength of the initial perturbation of the fluid meniscus and the local stress intensity factor, different fracture surface profiles, i.e. a dimple-like structure, a periodic corrugation pattern and a pure mirror zone are formed. The fractographic evolution is significantly affected by the applied stress. A decreased fracture Surface roughness is observed under a low applied stress. An increased fracture surface roughness, which has frequently been reported by other researchers, is also observed in the present studies under a high applied stress. Unique fractographic features are attributed to the non-linear hyperelastic stiffening for less softening) mechanism. (C) 2008 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved. |
| 类目[WOS] | Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering |
| 研究领域[WOS] | Materials Science ; Metallurgy & Metallurgical Engineering |
| 关键词[WOS] | DYNAMIC FRACTURE ; FLOW ; HYPERELASTICITY ; DISTRIBUTIONS ; DEFORMATION ; PLASTICITY ; MECHANISM ; CLEAVAGE ; BEHAVIOR ; LIQUID |
| 收录类别 | SCI ; EI |
| 语种 | 英语 |
| WOS记录号 | WOS:000261347500047 |
| 公开日期 | 2009-08-03 ; 2009-09-14 |
| 源URL | [http://dspace.imech.ac.cn/handle/311007/25820]  |
| 专题 | 力学研究所_力学所知识产出(1956-2008) |
| 推荐引用方式 GB/T 7714 | Wang G,Chan KC,Xu XH,et al. Instability Of Crack Propagation In Brittle Bulk Metallic Glass[J]. Acta Materialia,2008:5845-5860. |
| APA | Wang G,Chan KC,许向红,&Wang WH.(2008).Instability Of Crack Propagation In Brittle Bulk Metallic Glass.Acta Materialia,5845-5860. |
| MLA | Wang G,et al."Instability Of Crack Propagation In Brittle Bulk Metallic Glass".Acta Materialia (2008):5845-5860. |
入库方式： OAI收割
来源：力学研究所
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