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Strain-hardening under uniaxial tension in a rejuvenated bulk metallic glass
Zhou, W. H.1,2; Panagiotopoulos, N. T.3; Greer, A. L.3; Li, Y.1
Corresponding AuthorGreer, A. L.(alg13@cam.ac.uk) ; Li, Y.(liyi@imr.ac.cn)
2022-04-15
Source PublicationSCRIPTA MATERIALIA
ISSN1359-6462
Volume212Pages:5
AbstractA rejuvenated Zr-based bulk metallic glass is tested in tension: it shows strain-hardening and reaches 0.9% plastic strain at failure. The initial rate of increase of flow stress with strain is 73 GPa, much higher than normal for polycrystalline metals and alloys. This hardening rate and its decay with increasing strain are compared with published data on a representative range of conventional and novel alloys. Taking the onset of necking as failure, and using Considere's analysis, we conclude that the metallic glass, however much rejuvenated, is limited to tensile plastic strains of approximately 1%, because of the rapid decay of hardening rate with strain. Rejuvenation of the metallic glass blocks early catastrophic failure in a predominant shear orientation. In comparison with as-cast samples, the fracture surface of the rejuvenated sample is more rugged and the characteristic vein pattern is denser. The effects of rejuvenation on abrasive-wear behavior are also examined. (c) 2022 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
KeywordMetallic glass Work-hardening Ductility Fracture Tensile testing
Funding OrganizationEuropean Research Council ; Shenyang National Laboratory for Materials Science
DOI10.1016/j.scriptamat.2022.114572
Indexed BySCI
Language英语
Funding ProjectEuropean Research Council[ERC-2015-AdG-695487] ; Shenyang National Laboratory for Materials Science
WOS Research AreaScience & Technology - Other Topics ; Materials Science ; Metallurgy & Metallurgical Engineering
WOS SubjectNanoscience & Nanotechnology ; Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering
WOS IDWOS:000790970200008
PublisherPERGAMON-ELSEVIER SCIENCE LTD
Citation statistics
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/173912
Collection中国科学院金属研究所
Corresponding AuthorGreer, A. L.; Li, Y.
Affiliation1.Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Shenyang 110016, Peoples R China
2.Univ Sci & Technol China, Sch Mat Sci & Engn, Hefei 230026, Peoples R China
3.Univ Cambridge, Dept Mat Sci & Met, Cambridge CB3 0FS, England
Recommended Citation
GB/T 7714
Zhou, W. H.,Panagiotopoulos, N. T.,Greer, A. L.,et al. Strain-hardening under uniaxial tension in a rejuvenated bulk metallic glass[J]. SCRIPTA MATERIALIA,2022,212:5.
APA Zhou, W. H.,Panagiotopoulos, N. T.,Greer, A. L.,&Li, Y..(2022).Strain-hardening under uniaxial tension in a rejuvenated bulk metallic glass.SCRIPTA MATERIALIA,212,5.
MLA Zhou, W. H.,et al."Strain-hardening under uniaxial tension in a rejuvenated bulk metallic glass".SCRIPTA MATERIALIA 212(2022):5.
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