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Vortex Evolution Behavior in Self-Assembly of Flow Units in Metallic Glasses

文献类型：期刊论文

作者Lian J(廉杰); Song RY(宋如月); Chen Y(陈艳); Dai LH(戴兰宏)
刊名ACTA MECHANICA SOLIDA SINICA
出版日期2023-07-11
关键词Vortex Free volume Self-assembly Flow units Metallic glasses
ISSN号0894-9166
DOI10.1007/s10338-023-00409-9
英文摘要Shear banding in amorphous metals originates from the activation and percolation of flow units. To uncover the self-assembly dynamics of flow units in metallic glasses, a rectangular sample with two flow units embedded in the matrix undergoing simple shearing was analyzed using finite element simulations. The vortex evolution behavior, including activation, growth, and collapse during the self-assembly of flow units, was revealed. It was found that the formation of a mature vortex indicates the onset of yielding, and the collapse of the vortex represents the percolation of flow units or shear localization. The effects of initial free volume distribution and the distance between flow units on vortex behavior were also studied. Increasing the initial free volume concentration within flow units or the matrix leads to a gentler vortex evolution process and better homogeneous plasticity. The shape of vortex tends to be flatter with the increase in flow units' spacing, and the optimal spacing was found to maximize the strength of the material.
分类号Q3
WOS研究方向Materials Science ; Mechanics
语种英语
WOS记录号WOS:001026345000002
资助机构NSFC [11972346, 11790292] ; NSFC Basic Science Center Program [11988102]
其他责任者Chen, Y (corresponding author), Chinese Acad Sci, Inst Mech, State Key Lab Nonlinear Mech, Beijing 100190, Peoples R China. ; Chen, Y (corresponding author), Univ Chinese Acad Sci, Sch Engn Sci, Beijing 100049, Peoples R China.
源URL[http://dspace.imech.ac.cn/handle/311007/92578]  
专题力学研究所_非线性力学国家重点实验室
作者单位1.{Lian, Jie, Song, Ruyue, Chen, Yan, Dai, Lanhong} Chinese Acad Sci, Inst Mech, State Key Lab Nonlinear Mech, Beijing 100190, Peoples R China
2.{Lian, Jie, Song, Ruyue, Chen, Yan, Dai, Lanhong} Univ Chinese Acad Sci, Sch Engn Sci, Beijing 100049, Peoples R China
推荐引用方式
GB/T 7714		 Lian J,Song RY,Chen Y,et al. Vortex Evolution Behavior in Self-Assembly of Flow Units in Metallic Glasses[J]. ACTA MECHANICA SOLIDA SINICA,2023.
APA 廉杰,宋如月,陈艳,&戴兰宏.(2023).Vortex Evolution Behavior in Self-Assembly of Flow Units in Metallic Glasses.ACTA MECHANICA SOLIDA SINICA.
MLA 廉杰,et al."Vortex Evolution Behavior in Self-Assembly of Flow Units in Metallic Glasses".ACTA MECHANICA SOLIDA SINICA (2023).

入库方式： OAI收割

来源：力学研究所

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