IMECH-IR  > 非线性力学国家重点实验室
How does the initial free volume distribution affect shear band formation in metallic glass?
Chen Y(陈艳); Jiang MQ(蒋敏强); Dai LH(戴兰宏); Dai, LH (reprint author), Chinese Acad Sci, Inst Mech, State Key Lab Nonlinear Mech, Beijing 100190, Peoples R China
Source PublicationScience China-Physics Mechanics & Astronomy
2011
Volume54Issue:8Pages:1488-1494
ISSN1674-7348
AbstractIntroducing heterogeneities into the structure is an effective way to enhance the plasticity in metallic glasses (MGs). As natural heterogeneity, the original randomly distributed free volume in MGs has been found to be in favor of plasticity. However, the exact correlation between the free volume distribution and mechanical response is still unclear. In this paper, we investigate the shear banding in MGs with different structural disorders, characterized by both the free volume concentration (FVC) and the free volume dispersion (FVD). It is found that, either high FVC or wide FVD leads to low activation stress of shear band; wide FVD promotes the multiplication of shear bands but high FVC restricts it. It reveals that the yield strength in MGs is dependent on the amount of free volume while the plasticity mainly relies on the distribution. An optimum combination of the two aspects probably helps to design a MG of both good plasticity and high strength.
KeywordMetallic Glass Free Volume Shear Band Yield Strength Inhomogeneous Deformation Mechanical-properties Amorphous-alloys Room-temperature Plasticity Ductility Behavior Flow Bmgs
Subject AreaPhysics
DOI10.1007/s11433-011-4376-z
URL查看原文
Indexed BySCI ; EI
Language英语
WOS IDWOS:000292928900022
WOS KeywordINHOMOGENEOUS DEFORMATION ; MECHANICAL-PROPERTIES ; AMORPHOUS-ALLOYS ; ROOM-TEMPERATURE ; PLASTICITY ; DUCTILITY ; BEHAVIOR ; FLOW ; BMGS
WOS Research AreaPhysics
WOS SubjectPhysics, Multidisciplinary
Funding OrganizationThis work was supported by the National Natural Science Foundation of China (Grants Nos. 10725211, 11002144, 11021262), the National Natural Science Foundation of China-NSAF (Grant No. 10976100), the National Key Basic Research Program of China (Grant No. 2009CB724401) and the Key Project of Chinese Academy of Sciences (Grant No. KJCX2-YW-M04).
DepartmentLNM冲击动力学与新型材料力学性能
Classification二类/Q3
Citation statistics
Cited Times:17[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://dspace.imech.ac.cn/handle/311007/44917
Collection非线性力学国家重点实验室
Corresponding AuthorDai, LH (reprint author), Chinese Acad Sci, Inst Mech, State Key Lab Nonlinear Mech, Beijing 100190, Peoples R China
Recommended Citation
GB/T 7714
Chen Y,Jiang MQ,Dai LH,et al. How does the initial free volume distribution affect shear band formation in metallic glass?[J]. Science China-Physics Mechanics & Astronomy,2011,54(8):1488-1494.
APA 陈艳,蒋敏强,戴兰宏,&Dai, LH .(2011).How does the initial free volume distribution affect shear band formation in metallic glass?.Science China-Physics Mechanics & Astronomy,54(8),1488-1494.
MLA 陈艳,et al."How does the initial free volume distribution affect shear band formation in metallic glass?".Science China-Physics Mechanics & Astronomy 54.8(2011):1488-1494.
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