Probing the role of Johari-Goldstein relaxation in the plasticity of metallic glasses

doi:10.1080/21663831.2019.1620360

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	Probing the role of Johari-Goldstein relaxation in the plasticity of metallic glasses
	Zhang M(张猛); Chen Y(陈艳); He RG; Guo SF; Ma J; Dai LH(戴兰宏)
刊名	MATERIALS RESEARCH LETTERS
	2019
卷号	7 期号:9 页码:383-391
关键词	Metallic glasses Johari-Goldstein relaxation plasticity nanoindentation
ISSN号	2166-3831
DOI	10.1080/21663831.2019.1620360
通讯作者	Zhang, M.(m.zhangiwrm@jnu.edu.cn) ; Chen, Y.(chenyan@lnm.imech.ac.cn) ; Dai, L. H.(lhdai@lnm.imech.ac.cn)
英文摘要	Johari-Goldstein (JG) relaxation closely relates to the shear transformation zones (STZs) in the flow of metallic glasses (MGs). However, the actual role played by JG relaxation in the STZ-evoked plastic deformation of MGs remains unknown. In this work, by substituting the transition metal (TM) element in La(TM)Al MGs (TM = Ni, Co, Cu, CuNi) to tune the feature of JG relaxation, how JG relaxation alters the deformation behaviors of MGs is tentatively examined with nanoindentation. The results demonstrate that JG relaxation modulates the anelastic to plastic transition rate in the plastic deformation accommodation of MGs via a characteristic relaxation time. [GRAPHICS]
分类号	一类
资助项目	NationalNature and Science Foundation of China[51701082] ; Fundamental Research Funds for the Central Universities ; Guangdong Province Science and Technology Plan[2017B090903005] ; Opening Fund of State Key Laboratory of Non-linear Mechanics[LNM201812]
WOS关键词	RATE DEPENDENCE ; SERRATED FLOW ; TRANSITION
WOS研究方向	Materials Science
语种	英语
WOS记录号	WOS:000471551600006
资助机构	NationalNature and Science Foundation of China ; Fundamental Research Funds for the Central Universities ; Guangdong Province Science and Technology Plan ; Opening Fund of State Key Laboratory of Non-linear Mechanics
其他责任者	Zhang, M. ; Chen, Y. ; Dai, L. H.
内容类型	期刊论文
源URL	[http://dspace.imech.ac.cn/handle/311007/79397]
专题	力学研究所_非线性力学国家重点实验室
推荐引用方式 GB/T 7714	Zhang M,Chen Y,He RG,et al. Probing the role of Johari-Goldstein relaxation in the plasticity of metallic glasses[J]. MATERIALS RESEARCH LETTERS,2019,7(9):383-391.
APA	张猛,陈艳,He RG,Guo SF,Ma J,&戴兰宏.(2019).Probing the role of Johari-Goldstein relaxation in the plasticity of metallic glasses.MATERIALS RESEARCH LETTERS,7(9),383-391.
MLA	张猛,et al."Probing the role of Johari-Goldstein relaxation in the plasticity of metallic glasses".MATERIALS RESEARCH LETTERS 7.9(2019):383-391.