Enhanced tensile plasticity of Zr based bulk metallic glasses by a stress induced large scale flow | |
Dong J; Gao M; Huan Y(郇勇); Feng YH(冯义辉); Liu, W.; Wang, W. H.; Huan, Y (reprint author), Chinese Acad Sci, Inst Mech, State Key Lab Nonlinear Mech LNM, Beijing 100190, Peoples R China. | |
发表期刊 | JOURNAL OF ALLOYS AND COMPOUNDS |
2017-12-15 | |
卷号 | 727页码:297-303 |
ISSN | 0925-8388 |
摘要 | Tensile plasticity in a Zr-based bulk metallic glasses is achieved through a stress induced large-scale flow. The large-scale flow is activated in a complex stress field which is produced by introducing micro-pits array on specimen surfaces using a laser engraving technique. A flame-like fracture morphology with bigger size (about 10 mu m in height) is observed on the fracture surface of specimen, indicating that the size of flow here is far beyond the size of that induced by shear bands. Theoretical analysis accompanied with finite elements modeling (FEM) reveal that the form of high shear zones agrees well with that of the large-scale flow, suggesting that the flow form is changed by the complex stress field. After a comprehensive analyze, the intense shear and suppressing shear bands are concluded to be the two necessary conditions for the stress induced large scale flow. (C) 2017 Elsevier B.V. All rights reserved. |
关键词 | Bulk Metallic Glasses Large Scale Flow Tensile Plasticity Laser-engraving Finite Element Modeling |
DOI | 10.1016/j.jallcom.2017.08.046 |
URL | 查看原文 |
收录类别 | SCI ; EI |
语种 | 英语 |
WOS记录号 | WOS:000412712900037 |
关键词[WOS] | SHEAR BANDS ; DUCTILITY ; ALLOYS |
WOS研究方向 | Chemistry ; Materials Science ; Metallurgy & Metallurgical Engineering |
WOS类目 | Chemistry, Physical ; Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering |
项目资助者 | National Natural Science Foundation of China(11372323 ; MOST 973 of China(2015CB856800) ; CAS ; 11302231) |
课题组名称 | LNM实验平台 |
论文分区 | 一类 |
力学所作者排名 | 1 |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://dspace.imech.ac.cn/handle/311007/70080 |
专题 | 非线性力学国家重点实验室 |
通讯作者 | Huan, Y (reprint author), Chinese Acad Sci, Inst Mech, State Key Lab Nonlinear Mech LNM, Beijing 100190, Peoples R China. |
推荐引用方式 GB/T 7714 | Dong J,Gao M,Huan Y,et al. Enhanced tensile plasticity of Zr based bulk metallic glasses by a stress induced large scale flow[J]. JOURNAL OF ALLOYS AND COMPOUNDS,2017,727:297-303. |
APA | Dong J.,Gao M.,Huan Y.,Feng YH.,Liu, W..,...&Huan, Y .(2017).Enhanced tensile plasticity of Zr based bulk metallic glasses by a stress induced large scale flow.JOURNAL OF ALLOYS AND COMPOUNDS,727,297-303. |
MLA | Dong J,et al."Enhanced tensile plasticity of Zr based bulk metallic glasses by a stress induced large scale flow".JOURNAL OF ALLOYS AND COMPOUNDS 727(2017):297-303. |
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