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Fatigue behavior of a Ti-based metallic glass: Effect of sampling location in association with free volume
Wang, X. D.1; Song, S. L.1; Zhu, Z. W.2; Zhang, H. F.2; Ren, X. C.1
Corresponding AuthorRen, X. C.(xcren@ustb.edu.cn)
2021-04-25
Source PublicationJOURNAL OF ALLOYS AND COMPOUNDS
ISSN0925-8388
Volume861Pages:10
AbstractThe large scatter of fatigue property severely hinders the application of metallic glasses (MGs). The sampling location may be one important reason for the fatigue scatter, however the related studies are few. Here we confirmed that, the fatigue property and mechanism of a Ti-based MG were influenced by the sampling location from casting MG plate. The differential scanning calorimetry (DSC) result indicates that the free volume contents decrease from outside to inside along the thickness direction of casting plate, which is probably due to varying cooling rates in this direction during solidification. It is found that the shear-band features after fatigue fracture depend on the sampling location, that is, for the specimens containing smaller near-surface volume, the small amount of the initial free volume contents and increased free volume contents induced by cyclic loading suppress the formation of shear band. The fatigue endurance limit, fatigue ratio and fatigue life of the specimens containing smaller near-surface volume are obviously higher. The superior fatigue property can be well explained by the shear band-mediated fatigue cracking mechanism. These results enhance the understanding on the relation between the free volume, shear band and fatigue property under cyclic loading and provide the instruction how to regulate the fatigue resistance of MG by controlling where the specimens are cut from casting MG plates based on the microstructural state. (C) 2020 Published by Elsevier B.V.
KeywordMetallic glass Shear band Sampling location Free volume Fatigue endurance limit Fatigue crack
Funding OrganizationChina Postdoctoral Science Foundation ; Fundamental Research Funds for the Central Universities
DOI10.1016/j.jallcom.2020.158432
Indexed BySCI
Language英语
Funding ProjectChina Postdoctoral Science Foundation[2019M660455] ; Fundamental Research Funds for the Central Universities[FRF-TP-19-011A1]
WOS Research AreaChemistry ; Materials Science ; Metallurgy & Metallurgical Engineering
WOS SubjectChemistry, Physical ; Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering
WOS IDWOS:000619199300070
PublisherELSEVIER SCIENCE SA
Citation statistics
Cited Times:1[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/160836
Collection中国科学院金属研究所
Corresponding AuthorRen, X. C.
Affiliation1.Univ Sci & Technol Beijing, Natl Ctr Mat Serv Safety, Beijing 100083, Peoples R China
2.Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, 72 Wenhua Rd, Shenyang 110016, Peoples R China
Recommended Citation
GB/T 7714
Wang, X. D.,Song, S. L.,Zhu, Z. W.,et al. Fatigue behavior of a Ti-based metallic glass: Effect of sampling location in association with free volume[J]. JOURNAL OF ALLOYS AND COMPOUNDS,2021,861:10.
APA Wang, X. D.,Song, S. L.,Zhu, Z. W.,Zhang, H. F.,&Ren, X. C..(2021).Fatigue behavior of a Ti-based metallic glass: Effect of sampling location in association with free volume.JOURNAL OF ALLOYS AND COMPOUNDS,861,10.
MLA Wang, X. D.,et al."Fatigue behavior of a Ti-based metallic glass: Effect of sampling location in association with free volume".JOURNAL OF ALLOYS AND COMPOUNDS 861(2021):10.
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