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Shear band propagation and plastic softening of metallic glass under cyclic compression
Wang, X. D.; Qu, R. T.; Liu, Z. Q.; Zhang, Z. F.; Qu, RT; Zhang, ZF (reprint author), Chinese Acad Sci, Shenyang Natl Lab Mat Sci, Inst Met Res, 72 Wenhua Rd, Shenyang 110016, Peoples R China.
2017-02-25
Source PublicationJOURNAL OF ALLOYS AND COMPOUNDS
ISSN0925-8388
Volume695Pages:2016-2022
AbstractShear bands play dominant roles in fatigue damage and fracture of metallic glasses (MGs). In order to explore the effect of cyclic loading on the shear banding behavior, interrupted cyclic compression-compression experiments combined with scanning electron microscope observations using a typical Zr-based MG were performed. With increasing the number of loading cycles, shear bands firstly progressively propagate and eventually stop growing. In contrast to the apparent "work-hardening" behavior caused by the progressive propagation of shear band under monotonic loading, plastic softening occurs and then reaches saturation under cyclic compression. Such cyclic softening behavior is suggested to result from the production of excessive free volume in MGs, which decreases the critical stress for shear band initiation. These findings may improve the understanding on fatigue damage mechanisms and provide instructions for future design of MGs with excellent fatigue performance. (C) 2016 Elsevier B.V. All rights reserved.; Shear bands play dominant roles in fatigue damage and fracture of metallic glasses (MGs). In order to explore the effect of cyclic loading on the shear banding behavior, interrupted cyclic compression-compression experiments combined with scanning electron microscope observations using a typical Zr-based MG were performed. With increasing the number of loading cycles, shear bands firstly progressively propagate and eventually stop growing. In contrast to the apparent "work-hardening" behavior caused by the progressive propagation of shear band under monotonic loading, plastic softening occurs and then reaches saturation under cyclic compression. Such cyclic softening behavior is suggested to result from the production of excessive free volume in MGs, which decreases the critical stress for shear band initiation. These findings may improve the understanding on fatigue damage mechanisms and provide instructions for future design of MGs with excellent fatigue performance. (C) 2016 Elsevier B.V. All rights reserved.
description.department[wang, x. d. ; qu, r. t. ; liu, z. q. ; zhang, z. f.] chinese acad sci, shenyang natl lab mat sci, inst met res, 72 wenhua rd, shenyang 110016, peoples r china
KeywordMetallic Glass Shear Band Progressive Propagation Cyclic Softening Free Volume
Subject AreaChemistry, Physical ; Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering
Funding OrganizationNational Natural Science Foundation of China (NSFC) [51331007, 51301174, 51501190]
Indexed BySCI
Language英语
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/78282
Collection中国科学院金属研究所
Corresponding AuthorQu, RT; Zhang, ZF (reprint author), Chinese Acad Sci, Shenyang Natl Lab Mat Sci, Inst Met Res, 72 Wenhua Rd, Shenyang 110016, Peoples R China.
Recommended Citation
GB/T 7714
Wang, X. D.,Qu, R. T.,Liu, Z. Q.,et al. Shear band propagation and plastic softening of metallic glass under cyclic compression[J]. JOURNAL OF ALLOYS AND COMPOUNDS,2017,695:2016-2022.
APA Wang, X. D.,Qu, R. T.,Liu, Z. Q.,Zhang, Z. F.,Qu, RT,&Zhang, ZF .(2017).Shear band propagation and plastic softening of metallic glass under cyclic compression.JOURNAL OF ALLOYS AND COMPOUNDS,695,2016-2022.
MLA Wang, X. D.,et al."Shear band propagation and plastic softening of metallic glass under cyclic compression".JOURNAL OF ALLOYS AND COMPOUNDS 695(2017):2016-2022.
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