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Deformation behavior of Al-rich metallic glasses under nanoindentation
Guo, Hui; Jiang, Chuanbin; Yang, Baijun; Wang, Jianqiang; Wang, JQ (reprint author), Chinese Acad Sci, Shenyang Natl Lab Mat Sci, Inst Met Res, Shenyang 110016, Liaoning, Peoples R China.
2017-11-01
Source PublicationJOURNAL MATER SCI TECHNOL
ISSN1005-0302
Volume33Issue:11Pages:1272-1277
AbstractTo clarify the deformation behavior of Al-rich metallic glasses (MGs), two kinds of Al-rich MGs (i.e. bulk and ribbon samples) with different frozen-in excess volume have been analyzed under nanoindentation. It was found that, with the decrease of frozen-in excess volume, the serration behavior becomes inconspicuous together with the increase of hardness. Further, shear transformation zones (STZs), related to the occurrence of shear banding, have been evaluated by different methods: the cooperative shearing model (CSM), the rate-jump method (RJM) and the dynamic-mechanical response (DMR). In contrast, the STZ volumes, calculated by the RJM, increase from 2.77 nm(3) in the bulk to 3.59 nm(3) in the ribbon, which are in good agreement with 2.60 nm(3) obtained from the icosahedral supercluster medium-range order structure model in Al-rich MGs. This result reflects that an intrinsic correlation exists between the formation of STZs and the medium-range orders (MROs). Moreover, the variation trend of the STZ volume was analyzed in terms of the frozen-in excess volume content. (C) 2017 Published by Elsevier Ltd on behalf of The editorial office of Journal of Materials Science & Technology.; To clarify the deformation behavior of Al-rich metallic glasses (MGs), two kinds of Al-rich MGs (i.e. bulk and ribbon samples) with different frozen-in excess volume have been analyzed under nanoindentation. It was found that, with the decrease of frozen-in excess volume, the serration behavior becomes inconspicuous together with the increase of hardness. Further, shear transformation zones (STZs), related to the occurrence of shear banding, have been evaluated by different methods: the cooperative shearing model (CSM), the rate-jump method (RJM) and the dynamic-mechanical response (DMR). In contrast, the STZ volumes, calculated by the RJM, increase from 2.77 nm(3) in the bulk to 3.59 nm(3) in the ribbon, which are in good agreement with 2.60 nm(3) obtained from the icosahedral supercluster medium-range order structure model in Al-rich MGs. This result reflects that an intrinsic correlation exists between the formation of STZs and the medium-range orders (MROs). Moreover, the variation trend of the STZ volume was analyzed in terms of the frozen-in excess volume content. (C) 2017 Published by Elsevier Ltd on behalf of The editorial office of Journal of Materials Science & Technology.
description.department[guo, hui ; jiang, chuanbin ; yang, baijun ; wang, jianqiang] chinese acad sci, shenyang natl lab mat sci, inst met res, shenyang 110016, liaoning, peoples r china
KeywordMetallic Glasses Inhomogeneous Deformation Free Volume Nanoindentation
Subject AreaMaterials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering
Funding OrganizationNational Natural Science Foundation of China [51131006, 51471166]; National Key Research and Development Program of China [2016YFB1100204]
Indexed BySCI
Language英语
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/78996
Collection中国科学院金属研究所
Corresponding AuthorWang, JQ (reprint author), Chinese Acad Sci, Shenyang Natl Lab Mat Sci, Inst Met Res, Shenyang 110016, Liaoning, Peoples R China.
Recommended Citation
GB/T 7714
Guo, Hui,Jiang, Chuanbin,Yang, Baijun,et al. Deformation behavior of Al-rich metallic glasses under nanoindentation[J]. JOURNAL MATER SCI TECHNOL,2017,33(11):1272-1277.
APA Guo, Hui,Jiang, Chuanbin,Yang, Baijun,Wang, Jianqiang,&Wang, JQ .(2017).Deformation behavior of Al-rich metallic glasses under nanoindentation.JOURNAL MATER SCI TECHNOL,33(11),1272-1277.
MLA Guo, Hui,et al."Deformation behavior of Al-rich metallic glasses under nanoindentation".JOURNAL MATER SCI TECHNOL 33.11(2017):1272-1277.
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