Ultrasonic plasticity of metallic glass near room temperature

doi:10.1016/j.apmt.2020.100866

CORC > 力学研究所 > 中国科学院力学研究所 > 非线性力学国家重点实验室

	Ultrasonic plasticity of metallic glass near room temperature
	Li, X.7; Wei D(魏丹)6; Zhang, J. Y.5; Liu, X. D.7; Li, Z.7; Wang, T. Y.5; He, Q. F.5; Wang, Y. J.1,6; Ma, J.7; Wang, W. H.3,4
刊名	APPLIED MATERIALS TODAY
	2020-12-01
卷号	21 页码:8
关键词	Metallic glass Ultrasound agitated super-plasticity Room temperature deformation Atomic-scale dilations Dynamic heterogeneity
ISSN号	2352-9407
DOI	10.1016/j.apmt.2020.100866
通讯作者	Wang, Y. J.(yjwang@imech.ac.cn) ; Ma, J.(majiang@szu.edu.cn) ; Yang, Y.(yonyang@cityu.edu.hk)
英文摘要	Bulk metallic glasses (BMGs) are well-known for their superb strength (1-4 GPa) (Ashby and Greer, 2006) [1] but poor/localized plasticity when deformed at low temperatures or high strain rates (Inoue and Takeuchi, 2011; Kumar et al., 2009) [2,3]. Therefore, processing of BMGs, such as forming and shaping for various important applications, is usually performed above their glass transition temperatures (T-g) - also known as "thermo-plastic" forming (Geer, 1995) - for which the selection of alloy composition and the protocol for thermal treatment is demanding in order to promote extensive homogeneous plastic flows while avoiding crystallization (Geer, 1995). In stark contrast, here we demonstrate that homogeneous super-plasticity can occur rapidly in different BMGs below their Tg when subjected to ultrasonic agitations. Through atomistic simulations and nanomechanical characterization, we provide the compelling evidence to show that this super-plasticity is attributed to dynamic heterogeneity and cyclic induced atomic-scale dilations in BMGs, which leads to significant rejuvenation and final collapse of the solid-like amorphous structure, thereby leading to an overall fluid-like behavior. Our finding uncovers that BMGs can undergo substantial plastic flows through unusual liquefaction near room temperature and, more importantly, it leads to the development of a facile and cost-effective "ultrasonic-plastic" forming method to process a wide range of BMGs at low temperatures. (C) 2020 Elsevier Ltd. All rights reserved.
分类号	一类
资助项目	Key Basic and Applied Research Program of Guangdong Province, China[20198030302010] ; NSF of China[51871157] ; Science and Technology Innovation Commission Shenzhen[JCYJ20170112111216258] ; National Key Research and Development Program of China[2018YFA0703604] ; NSFC[11672299] ; Youth Innovation Promotion Association of Chinese Academy of Sciences[2017025] ; Research Grant Council (RGC), Hong Kong Government, through General Research Fund (RGC)[CityU11213118] ; Research Grant Council (RGC), Hong Kong Government, through General Research Fund (RGC)[CityU11200719] ; Research Grant Council (RGC), Hong Kong Government, through General Research Fund (RGC)[CityU11209317]
WOS关键词	MECHANICAL-BEHAVIOR ; DYNAMICS ; RELAXATION ; NANOINDENTATION ; DEFORMATION ; TRANSITION ; EVOLUTION ; MODULUS ; ALLOYS
WOS研究方向	Materials Science
语种	英语
WOS记录号	WOS:000599825600001
资助机构	Key Basic and Applied Research Program of Guangdong Province, China ; NSF of China ; Science and Technology Innovation Commission Shenzhen ; National Key Research and Development Program of China ; NSFC ; Youth Innovation Promotion Association of Chinese Academy of Sciences ; Research Grant Council (RGC), Hong Kong Government, through General Research Fund (RGC)
其他责任者	Wang, Y. J. ; Ma, J. ; Yang, Y.
内容类型	期刊论文
源URL	[http://dspace.imech.ac.cn/handle/311007/85882]
专题	力学研究所_非线性力学国家重点实验室
作者单位	1.Univ Chinese Acad Sci, Sch Engn Sci, Beijing 100049, Peoples R China; 2.City Univ Hong Kong, Dept Mat Sci & Engn, Coll Engn, Kowloon Tong,Kowloon, Hong Kong, Peoples R China 3.Songshan Lake Mat Lab, Dongguan 523808, Peoples R China; 4.Chinese Acad Sci, Inst Phys, Beijing 100190, Peoples R China; 5.City Univ Hong Kong, Dept Mech Engn, Coll Engn, Kowloon Tong,Kowloon, Hong Kong, Peoples R China; 6.Chinese Acad Sci, Inst Mech, State Key Lab Nonlinear Mech, Beijing 100190, Peoples R China; 7.Shenzhen Univ, Coll Mechatron & Control Engn, Shenzhen 518060, Peoples R China;
推荐引用方式 GB/T 7714	Li, X.,Wei D,Zhang, J. Y.,et al. Ultrasonic plasticity of metallic glass near room temperature[J]. APPLIED MATERIALS TODAY,2020,21:8.
APA	Li, X..,魏丹.,Zhang, J. Y..,Liu, X. D..,Li, Z..,...&Yang, Y..(2020).Ultrasonic plasticity of metallic glass near room temperature.APPLIED MATERIALS TODAY,21,8.
MLA	Li, X.,et al."Ultrasonic plasticity of metallic glass near room temperature".APPLIED MATERIALS TODAY 21(2020):8.