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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
发表期刊JOURNAL OF ALLOYS AND COMPOUNDS
ISSN0925-8388
卷号695页码:2016-2022
摘要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.; 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.
部门归属[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
关键词Metallic Glass Shear Band Progressive Propagation Cyclic Softening Free Volume
学科领域Chemistry, Physical ; Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering
资助者National Natural Science Foundation of China (NSFC) [51331007, 51301174, 51501190]
收录类别SCI
语种英语
文献类型期刊论文
条目标识符http://ir.imr.ac.cn/handle/321006/78282
专题中国科学院金属研究所
通讯作者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.
推荐引用方式
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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