IMECH-IR  > 非线性力学国家重点实验室
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
Source PublicationIntermetallics
2011
Volume19Issue:12Pages:1775-1779
ISSN0966-9795
AbstractWe 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.
KeywordBrittleness And Ductility Fracture Mode Glasses Metallic Energy-dissipation Deformation Transition Alloys Size
Subject AreaChemistry ; Materials Science ; Metallurgy & Metallurgical Engineering
DOI10.1016/j.intermet.2011.07.026
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Indexed BySCI ; EI
Language英语
WOS IDWOS:000296548500002
WOS KeywordENERGY-DISSIPATION ; DEFORMATION ; TRANSITION ; ALLOYS ; SIZE
WOS Research AreaChemistry ; Materials Science ; Metallurgy & Metallurgical Engineering
WOS SubjectChemistry, Physical ; Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering
Funding OrganizationFinancial 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).
DepartmentLNM冲击动力学与新型材料力学性能
Classification一类
Citation statistics
Document Type期刊论文
Identifierhttp://dspace.imech.ac.cn/handle/311007/44891
Collection非线性力学国家重点实验室
Corresponding AuthorDai, LH (reprint author), Chinese Acad Sci, State Key Lab Nonlinear Mech, Inst Mech, Beijing 100190, Peoples R China
Recommended Citation
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.
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.
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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