Structural origin of deformation and dynamical heterogeneity in metallic glasses

doi:10.1103/PhysRevMaterials.7.113601

IMECH-IR > 非线性力学国家重点实验室

	Structural origin of deformation and dynamical heterogeneity in metallic glasses
	Yang, Zeng-Yu1,2,3 ; Dai, Lan -Hong1,2,4
通讯作者	Dai, Lan -Hong(lhdai@lnm.imech.ac.cn)
发表期刊	PHYSICAL REVIEW MATERIALS
	2023-11-03
卷号	7 期号:11 页码:8
ISSN	2475-9953
摘要	Heterogeneity in the deformation field, especially in the form of shear bands, is a universal feature in disordered solids. The current paradigm presents the deformation heterogeneity as the result of structural inhomogeneity which is controlled by the concentration of atomic ordering clusters or flow defects. Here, we show that, in contrast to the population of atomic clusters, their topology, i.e., spatial distribution, is the root cause of the strain localization. This conclusion is reached via a decoupling tactic which completely eliminates the effect of concentration. Under loading stimuli, model glasses with identical concentration but various topological connectivity of atomic ordering clusters show remarkably distinct mechanical behaviors. Deformation heterogeneity and shear banding emergence are linked to glasses with strong topological connectivity. Topological connectivity can be not only characterized as the structural origin of strain localization, but is also transferable to detect the dynamical heterogeneity. These results are instrumental to rationalize the emergence of shear bands in disordered solids in terms of the pure structural information.
DOI	10.1103/PhysRevMaterials.7.113601
收录类别	SCI
语种	英语
WOS记录号	WOS:001098231700003
关键词[WOS]	MEDIUM-RANGE ORDER ; INHOMOGENEOUS FLOW ; LOCAL ORDER ; REJUVENATION ; RELAXATION ; SIMULATIONS
WOS研究方向	Materials Science
WOS类目	Materials Science, Multidisciplinary
资助项目	NSFC Basic Science Center Program[11988102] ; Strategic Priority Research Program[XDB22040302] ; Strategic Priority Research Program[XDB22040303] ; Key Research Program of Frontier Sciences[QYZDJSSWJSC011] ; Qisun Science Foundation of National Natural Science Foundation of China[U2141204] ; Opening Project of State Key Laboratory of Explosion Science and Technology (Beijing Institute of Technology)[KFJJ23-03M]
项目资助者	NSFC Basic Science Center Program ; Strategic Priority Research Program ; Key Research Program of Frontier Sciences ; Qisun Science Foundation of National Natural Science Foundation of China ; Opening Project of State Key Laboratory of Explosion Science and Technology (Beijing Institute of Technology)
引用统计	被引频次：1[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://dspace.imech.ac.cn/handle/311007/93400
专题	非线性力学国家重点实验室
通讯作者	Dai, Lan -Hong
作者单位	1.Chinese Acad Sci, Inst Mech, State Key Lab Nonlinear Mech, Beijing 100190, Peoples R China 2.Univ Chinese Acad Sci, Sch Engn Sci, Beijing 100049, Peoples R China 3.China Acad Engn Phys, Inst Fluid Phys, Mianyang 621900, Sichuan, Peoples R China 4.Univ Chinese Acad Sci, Sch Future Technol, Beijing 100049, Peoples R China
推荐引用方式 GB/T 7714	Yang, Zeng-Yu,Dai, Lan -Hong. Structural origin of deformation and dynamical heterogeneity in metallic glasses[J]. PHYSICAL REVIEW MATERIALS,2023,7,11,:8.
APA	Yang, Zeng-Yu,&Dai, Lan -Hong.(2023).Structural origin of deformation and dynamical heterogeneity in metallic glasses.PHYSICAL REVIEW MATERIALS,7(11),8.
MLA	Yang, Zeng-Yu,et al."Structural origin of deformation and dynamical heterogeneity in metallic glasses".PHYSICAL REVIEW MATERIALS 7.11(2023):8.

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