Shear band propagation and plastic softening of metallic glass under cyclic compression

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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.
刊名	JOURNAL OF ALLOYS AND COMPOUNDS
	2017-02-25
卷号	695 页码:2016-2022
关键词	Metallic glass Shear band Progressive propagation Cyclic softening Free volume
ISSN号	0925-8388
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.
中文摘要	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.
学科主题	Chemistry, Physical ; Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering
收录类别	SCI
资助信息	National Natural Science Foundation of China (NSFC) [51331007, 51301174, 51501190]
语种	英语
公开日期	2017-08-17
内容类型	期刊论文
源URL	[http://ir.imr.ac.cn/handle/321006/78282]
专题	金属研究所_中国科学院金属研究所
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..(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.