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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.
Source PublicationJOURNAL OF ALLOYS AND COMPOUNDS
2017-12-15
Volume727Pages:297-303
ISSN0925-8388
Abstract

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.

KeywordBulk Metallic Glasses Large Scale Flow Tensile Plasticity Laser-engraving Finite Element Modeling
DOI10.1016/j.jallcom.2017.08.046
URL查看原文
Indexed BySCI ; EI
Language英语
WOS IDWOS:000412712900037
WOS KeywordSHEAR BANDS ; DUCTILITY ; ALLOYS
WOS Research AreaChemistry ; Materials Science ; Metallurgy & Metallurgical Engineering
WOS SubjectChemistry, Physical ; Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering
Funding OrganizationNational Natural Science Foundation of China(11372323 ; MOST 973 of China(2015CB856800) ; CAS ; 11302231)
DepartmentLNM实验平台
Classification一类
Ranking1
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Document Type期刊论文
Identifierhttp://dspace.imech.ac.cn/handle/311007/70080
Collection非线性力学国家重点实验室
Corresponding AuthorHuan, Y (reprint author), Chinese Acad Sci, Inst Mech, State Key Lab Nonlinear Mech LNM, Beijing 100190, Peoples R China.
Recommended Citation
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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