Research Progress in Shear Banding Deformation and Fracture Mechanisms of Metallic Glasses

doi:10.11900/0412.1961.2020.00428

IMR OpenIR

	Research Progress in Shear Banding Deformation and Fracture Mechanisms of Metallic Glasses
	Qu Ruitao 1,2; Wang Xiaodi 1; Wu Shaojie 1; Zhang Zhefeng 1
通讯作者	Qu Ruitao(rtqu@nwpu.edu.cn)
	2021-04-11
发表期刊	ACTA METALLURGICA SINICA
ISSN	0412-1961
卷号	57 期号:4 页码:453-472
摘要	Plastic deformation of metallic glasses (MGs) at room temperature usually localizes into shear bands. The shear banding behavior dominates the deformation and fracture mechanisms of MGs and affects their mechanical properties (e. g., strength, plasticity, fracture toughness, fatigue properties, etc.). The shear banding behavior is of vital importance for understanding and improving mechanical properties of MGs; therefore, studies on shear bands have been long-standing hot topics in the MG field. In this paper, based on the previous studies of shear banding behaviors in various MGs, the mechanisms of shear band propagation, cracking, and unstable fracture under monotonic and cyclic loadings are elucidated. The experimental evidence of progressive shear band propagation under uniaxial loading is provided and the mechanisms of shear band cracking under compression are revealed. It is found that the "cold"fracture of shear band can occur when reducing sample size, adding external confinement, or decreasing the testing temperature to stabilize the shear band propagation. Under cyclic loading, the shear-band-mediated fatigue crack initiation and cracking mechanisms are confirmed. Furthermore, the fragmentation in brittle MGs under compression should be caused by split cracking from defects. The effect of sample size on competition between shearing and splitting for brittle MGs is also discussed. Finally, the significant role of external defects (e.g., notches) on shear banding behavior is described and a "defect engineering"strategy for tailoring the mechanical properties of MGs is proposed.
关键词	metallic glass shear band crack notch size effect
资助者	National Natural Science Foundation of China ; Natural Science Foundation of Liaoning Province ; Liaoning Revitalization Talents Program
DOI	10.11900/0412.1961.2020.00428
收录类别	SCI
语种	英语
资助项目	National Natural Science Foundation of China[51771205] ; Natural Science Foundation of Liaoning Province[2020-MS-011] ; Liaoning Revitalization Talents Program[XLYC1808027]
WOS研究方向	Metallurgy & Metallurgical Engineering
WOS类目	Metallurgy & Metallurgical Engineering
WOS记录号	WOS:000636641500008
出版者	SCIENCE PRESS
引用统计	被引频次：3[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/162411
专题	中国科学院金属研究所
通讯作者	Qu Ruitao
作者单位	1.Chinese Acad Sci, Inst Met Res, Shenyang 110016, Peoples R China 2.Northwestern Polytech Univ, Sch Mat Sci & Engn, Xian 710072, Peoples R China
推荐引用方式 GB/T 7714	Qu Ruitao,Wang Xiaodi,Wu Shaojie,et al. Research Progress in Shear Banding Deformation and Fracture Mechanisms of Metallic Glasses[J]. ACTA METALLURGICA SINICA,2021,57(4):453-472.
APA	Qu Ruitao,Wang Xiaodi,Wu Shaojie,&Zhang Zhefeng.(2021).Research Progress in Shear Banding Deformation and Fracture Mechanisms of Metallic Glasses.ACTA METALLURGICA SINICA,57(4),453-472.
MLA	Qu Ruitao,et al."Research Progress in Shear Banding Deformation and Fracture Mechanisms of Metallic Glasses".ACTA METALLURGICA SINICA 57.4(2021):453-472.