| Ductile to brittle transition of fracture of a Zr-based bulk metallic glass: Strain rate effect |
| Li MC; Jiang MQ(蒋敏强) ; Li G; He L; Sun J; Jiang F; Jiang, F (reprint author), Xi An Jiao Tong Univ, State Key Lab Mech Behav Mat, Xian 710049, Peoples R China.
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| 发表期刊 | INTERMETALLICS
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| 2016
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| 卷号 | 77页码:34-40 |
| ISSN | 0966-9795
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| 摘要 | Quasi-static and dynamic tensile experiments were conducted on a Zr-based bulk metallic glass at room temperature. A significant ductile-to-brittle transition was identified with increasing strain rate, based on the changes in the macroscopic fracture mode from shear to normal tension and in the microscopic fracture feature from vein patterns to fine dimples and/or nanoscale periodic corrugations. According to the Mohr-Coulomb criterion, it is revealed that such a transition is due to the competition between the intrinsic critical shear and tensile strengths at different strain rates. Microscopically, the strain-rate induced transition is attributed to the change in the motion of local atomic groups from shear transformation zone to tension transformation zone, in which the characteristic volume of shear transformation zone is a key parameter. (C) 2016 Published by Elsevier Ltd. |
| 关键词 | Metallic Glasses
Fracture
Strain Rate
Ductile-to-brittle Transition
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| DOI | 10.1016/j.intermet.2016.07.004
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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:000384383800005
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| 关键词[WOS] | Metallic glasses
; Fracture
; Strain rate
; Ductile-to-brittle transition
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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 | The financial support from the National Natural Science Foundation of China (NSFC) under Grant Nos. 51171138, 51171137, 11372315, 11522221 and 51321003 are gratefully acknowledged.
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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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| 力学所作者排名 | False
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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/311007/59714
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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 | Jiang, F (reprint author), Xi An Jiao Tong Univ, State Key Lab Mech Behav Mat, Xian 710049, Peoples R China. |
推荐引用方式
GB/T 7714 |
Li MC,Jiang MQ,Li G,et al. Ductile to brittle transition of fracture of a Zr-based bulk metallic glass: Strain rate effect[J]. INTERMETALLICS,2016,77:34-40.
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| APA |
Li MC.,蒋敏强.,Li G.,He L.,Sun J.,...&Jiang, F .(2016).Ductile to brittle transition of fracture of a Zr-based bulk metallic glass: Strain rate effect.INTERMETALLICS,77,34-40.
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| MLA |
Li MC,et al."Ductile to brittle transition of fracture of a Zr-based bulk metallic glass: Strain rate effect".INTERMETALLICS 77(2016):34-40.
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