| Crack branching instability and directional stability in dynamic fracture of a tough bulk metallic glass |
| Jiang MQ(蒋敏强) ; Meng JX(孟积兴); Keryvin V; Dai LH(戴兰宏); Dai, LH (reprint author), Chinese Acad Sci, State Key Lab Nonlinear Mech, Inst Mech, Beijing 100190, Peoples R China
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| 发表期刊 | Intermetallics
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| 2011
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| 卷号 | 19期号:12页码:1775-1779 |
| ISSN | 0966-9795
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| 摘要 | We report the ductile fracture behavior of a tough Zr-based bulk metallic glass (BMG) in the dynamic regime, where a rapid moving crack initiates by a Mode II shearing and then advances through plastic voids growth and linking. A clear fractographic evolution from river-like vein pattern to chevron-like zone where microscopic dimples and voids coexist, followed by crack microbranching pattern, was observed on the dynamic fracture surfaces. A terminal crack velocity of about 0.5 of the Rayleigh wave velocity was determined for the onset of such microbranching instability. Furthermore, the dynamic branched daughter cracks are favored to continue in their original mother crack plane, having "directional stability". Our findings may increase the understanding of the dynamic fracture of BMGs with both glassy nature and metallic bonding character. (C) 2011 Elsevier Ltd. All rights reserved. |
| 关键词 | Brittleness And Ductility
Fracture Mode
Glasses
Metallic
Energy-dissipation
Deformation
Transition
Alloys
Size
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| 学科领域 | Chemistry
; Materials Science
; Metallurgy & Metallurgical Engineering
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| DOI | 10.1016/j.intermet.2011.07.026
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| URL | 查看原文
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| 收录类别 | SCI
; EI
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| 语种 | 英语
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| WOS记录号 | WOS:000296548500002
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| 关键词[WOS] | ENERGY-DISSIPATION
; DEFORMATION
; TRANSITION
; ALLOYS
; SIZE
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| WOS研究方向 | Chemistry
; Materials Science
; Metallurgy & Metallurgical Engineering
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| WOS类目 | Chemistry, Physical
; Materials Science, Multidisciplinary
; Metallurgy & Metallurgical Engineering
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| 项目资助者 | Financial support is from the NSFC (Grants Nos. 10725211, 11002144, 11023001 and 11021262), the National Natural Science Foundation of China-NSAF. Grant No: 10976100, and the National Key Basic Research Program of China (Grant No. 2009CB724401).
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| 课题组名称 | LNM冲击动力学与新型材料力学性能
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| 论文分区 | 一类
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| 引用统计 |
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| 文献类型 | 期刊论文
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| 条目标识符 | http://dspace.imech.ac.cn/handle/311007/44891
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| 专题 | 非线性力学国家重点实验室
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| 通讯作者 | Dai, LH (reprint author), Chinese Acad Sci, State Key Lab Nonlinear Mech, Inst Mech, Beijing 100190, Peoples R China |
推荐引用方式
GB/T 7714 |
Jiang MQ,Meng JX,Keryvin V,et al. Crack branching instability and directional stability in dynamic fracture of a tough bulk metallic glass[J]. Intermetallics,2011,19,12,:1775-1779.
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| APA |
蒋敏强,孟积兴,Keryvin V,戴兰宏,&Dai, LH .(2011).Crack branching instability and directional stability in dynamic fracture of a tough bulk metallic glass.Intermetallics,19(12),1775-1779.
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| MLA |
蒋敏强,et al."Crack branching instability and directional stability in dynamic fracture of a tough bulk metallic glass".Intermetallics 19.12(2011):1775-1779.
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