Structural Rejuvenation of Metallic Glasses and Its Effect on Mechanical Behaviors

doi:10.11900/0412.1961.2020.00431

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

	Structural Rejuvenation of Metallic Glasses and Its Effect on Mechanical Behaviors
	Jiang MQ(蒋敏强)1,2; Gao Y(高洋)1,2
刊名	ACTA METALLURGICA SINICA
	2021-04-11
卷号	57 期号:4 页码:425-438
关键词	metallic glass structural relaxation rejuvenation shear band mechanical behavior
ISSN号	0412-1961
DOI	10.11900/0412.1961.2020.00431
通讯作者	Jiang Minqiang(mqjiang@imech.ac.cn)
英文摘要	Metallic glasses (MGs) are formed by the deep undercooling of high-temperature melt up to the glass transition temperature, and this process avoids the crystallization of the melt into ordered configurations of atoms. The atomic packing of MGs lacks a long-range periodicity. MGs reside at metastable energy states far away from the equilibrium of thermodynamics, but they are jammed in dynamics. These features provide MGs with remarkable mechanical, physical, and chemical properties, such as very high strength that is close to the ideal limit. However, the plastic deformation of MGs at room temperature is easily localized to form nanoscale shear bands, thereby resulting in limited macroscopic plasticity. More-over, physical ageing spontaneously reduces their energies toward an equilibrium state, thereby further weakening the plastic deformation ability of MGs, which is known as ageing-induced brittleness. Recent studies have shown that MGs can be rejuvenated with external energy injection into more disordered high-energy states in structure. This process, which is the inverse of physical ageing, can effectively improve the global plasticity of MGs and is expected to solve the problems of shear banding and physical ageing that restrict the applications of such materials. Therefore, the relevant aspects of the rejuvenation of MGs have attracted increasing interest. This article first introduces methods for the rejuvenation of MGs starting from the concepts of ageing and rejuvenation of glasses, and then summarizes the influencing factors of rejuvenation and the effects of rejuvenation on plasticity and other mechanical behaviors of MGs. Furthemore, the physical mechanism of rejuvenation is discussed briefly. Finally, several conclusions are drawn in this field, and some important problems that deserve further investigation are proposed.
分类号	Q3
资助项目	National Natural Science Foundation of China (NSFC)[11972345] ; National Natural Science Foundation of China (NSFC)[11790292] ; NSFC Basic Science Center forMultiscale Problems in Nonlinear Mechanics[11988102]
WOS研究方向	Metallurgy & Metallurgical Engineering
语种	英语
WOS记录号	WOS:000636641500006
资助机构	National Natural Science Foundation of China (NSFC) ; NSFC Basic Science Center forMultiscale Problems in Nonlinear Mechanics
其他责任者	Jiang Minqiang
内容类型	期刊论文
源URL	[http://dspace.imech.ac.cn/handle/311007/86449]
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.Chinese Acad Sci, Inst Mech, State Key Lab Nonlinear Mech, Beijing 100190, Peoples R China;
推荐引用方式 GB/T 7714	Jiang MQ,Gao Y. Structural Rejuvenation of Metallic Glasses and Its Effect on Mechanical Behaviors[J]. ACTA METALLURGICA SINICA,2021,57(4):425-438.
APA	蒋敏强,&高洋.(2021).Structural Rejuvenation of Metallic Glasses and Its Effect on Mechanical Behaviors.ACTA METALLURGICA SINICA,57(4),425-438.
MLA	蒋敏强,et al."Structural Rejuvenation of Metallic Glasses and Its Effect on Mechanical Behaviors".ACTA METALLURGICA SINICA 57.4(2021):425-438.