Structural origin of deformation and dynamical heterogeneity in metallic glasses
文献类型：期刊论文
| 作者 | Yang, Zeng-Yu2,3,4 ; Dai, Lan -Hong1,3,4
|
| 刊名 | PHYSICAL REVIEW MATERIALS
 |
| 出版日期 | 2023-11-03 |
| 卷号 | 7期号:11页码:8 |
| ISSN号 | 2475-9953 |
| DOI | 10.1103/PhysRevMaterials.7.113601 |
| 通讯作者 | Dai, Lan -Hong(lhdai@lnm.imech.ac.cn) |
| 英文摘要 | 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. |
| WOS关键词 | MEDIUM-RANGE ORDER ; INHOMOGENEOUS FLOW ; LOCAL ORDER ; REJUVENATION ; RELAXATION ; SIMULATIONS |
| 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] |
| WOS研究方向 | Materials Science |
| 语种 | 英语 |
| WOS记录号 | WOS:001098231700003 |
| 资助机构 | 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) |
| 源URL | [http://dspace.imech.ac.cn/handle/311007/93399]  |
| 专题 | 力学研究所_非线性力学国家重点实验室 |
| 通讯作者 | Dai, Lan -Hong |
| 作者单位 | 1.Univ Chinese Acad Sci, Sch Future Technol, Beijing 100049, Peoples R China 2.China Acad Engn Phys, Inst Fluid Phys, Mianyang 621900, Sichuan, Peoples R China 3.Univ Chinese Acad Sci, Sch Engn Sci, Beijing 100049, Peoples R China 4.Chinese Acad Sci, Inst Mech, State Key Lab Nonlinear Mech, Beijing 100190, 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. |
入库方式： OAI收割
来源：力学研究所
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