Fracture behavior and deformation-induced structure changes of a Ti-based metallic glass using micro-sized cantilevers

doi:10.1016/j.msea.2021.142519

CORC > 金属研究所 > 中国科学院金属研究所

	Fracture behavior and deformation-induced structure changes of a Ti-based metallic glass using micro-sized cantilevers
	Chu, Qiaoling 1,6,7; Cao, Qilu 1; Zhu, Xiaofei 2,6; Zhang, Min 1; Zhu, Zhengwang 3; Zhang, Haifeng 3; Bai, Ruixiang 4; Lei, Zhenkun 4; Cheng, Peng 5; Yan, Cheng 6
刊名	MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
	2022-01-26
卷号	833 页码:9
关键词	Metallic glass Nanocrystallization Shear bands Fracture toughness Notch
ISSN号	0921-5093
DOI	10.1016/j.msea.2021.142519
通讯作者	Chu, Qiaoling(chuqiaoling@xaut.edu.cn) ; Zhu, Xiaofei(xfzhu@sut.edu.cn) ; Yan, Cheng(c2.yan@qut.edu.au)
英文摘要	Micro-cantilever bending tests are performed to quantify the fracture toughness and reveal the deformation mechanism of a Ti-based metallic glass. Plastic deformation is localized in shear bands initiating from the roots of the notches of the cantilevers. Although the load-displacement curves show considerable ductile failure characteristics, the notch fracture toughness values that obtained from the bending tests are extremely low (similar to 4.7 MPa root m). Size dependent fracture is thought to be observed, where the fracture toughness increases with decreasing the uncracked ligament size of the cantilevers. TEM bright field images show that the shear bands with the width of 4-7 nm present brighter contrast. The regions in vicinity of the shear bands show dark zones (ranging from 3 to 5 nm in size) surrounded by continues bright zones. Cu nanocrystals are found not only inside the shear bands, but also around them. The free volume theory together with the simulation results is applied to explain the formation of shear bands in this Ti-based metallic glass during the bending deformation. The observed Cu nanocrystals are thought to be formed as a consequence of plastic-deformation-assisted crystallization. It is suggested that local atomic rearrangements lead to shifting of Cu nanocrystals towards more stable positions and cause the formation of Cu nanocrystals in regions subjected to high shear stress field.
资助项目	Australian Research Council[DP180101955] ; National Natural Science Foundation of China[51904243] ; National Natural Science Foundation of China[51974243] ; Postdoctoral Science Foundation of China[2019M653704] ; Young Talents Support Plan of Shaanxi Provincial College Association for Science and Technology[20200416]
WOS研究方向	Science & Technology - Other Topics ; Materials Science ; Metallurgy & Metallurgical Engineering
语种	英语
出版者	ELSEVIER SCIENCE SA
WOS记录号	WOS:000761614500001
资助机构	Australian Research Council ; National Natural Science Foundation of China ; Postdoctoral Science Foundation of China ; Young Talents Support Plan of Shaanxi Provincial College Association for Science and Technology
内容类型	期刊论文
源URL	[http://ir.imr.ac.cn/handle/321006/173168]
专题	金属研究所_中国科学院金属研究所
通讯作者	Chu, Qiaoling; Zhu, Xiaofei; Yan, Cheng
作者单位	1.Xian Univ Technol, Sch Mat & Engn, Xian 710048, Peoples R China 2.Shenyang Univ Technol, Sch Mat & Engn, Shenyang 110870, Peoples R China 3.Chinese Acad Sci, Shi Changxu Innovat Ctr Adv Mat, Inst Met Res, Shenyang 110016, Peoples R China 4.Dalian Univ Technol, State Key Lab Struct Anal Ind Equipment, Dalian 116024, Peoples R China 5.CGN Adv Mat Technol Suzhou Co Ltd, Suzhou, Peoples R China 6.Queensland Univ Technol QUT, Sci & Engn Fac, Sch Chem Phys & Mech Engn, Brisbane, Qld 4001, Australia 7.CGN Delta Jiangsu Plast & Chem Co Ltd, Taicang, Peoples R China
推荐引用方式 GB/T 7714	Chu, Qiaoling,Cao, Qilu,Zhu, Xiaofei,et al. Fracture behavior and deformation-induced structure changes of a Ti-based metallic glass using micro-sized cantilevers[J]. MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING,2022,833:9.
APA	Chu, Qiaoling.,Cao, Qilu.,Zhu, Xiaofei.,Zhang, Min.,Zhu, Zhengwang.,...&Yan, Cheng.(2022).Fracture behavior and deformation-induced structure changes of a Ti-based metallic glass using micro-sized cantilevers.MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING,833,9.
MLA	Chu, Qiaoling,et al."Fracture behavior and deformation-induced structure changes of a Ti-based metallic glass using micro-sized cantilevers".MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING 833(2022):9.