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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.
2017-12-15
发表期刊JOURNAL OF ALLOYS AND COMPOUNDS
卷号727页码:297-303
ISSN0925-8388
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
DOI10.1016/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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