| A hierarchically correlated flow defect model for metallic glass: Universal understanding of stress relaxation and creep | |
| Hao Q1; Lyu GJ2; Pineda E3; Pelletier JM.4; Yang Y6,7; Qiao JC1 | |
| Corresponding Author | Qiao, J. C.([email protected]) |
| Source Publication | INTERNATIONAL JOURNAL OF PLASTICITY
 |
| 2022-07-01 | |
| Volume | 154Pages:19 |
| ISSN | 0749-6419 |
| Abstract | Due to the structurally disordered arrangement of atoms and deviation from thermodynamic equilibrium, the physical and mechanical properties of metallic glasses can vary with time, temperature and magnitude of strain or stress. The current work provides a theoretical framework based on the hierarchically correlated atomic theory, which allows a quantitative description of the non-elastic deformation in metallic glasses. The defect concentration is adopted as an order parameter, which can evolve with temperature and non-elastic strain owing to correlated atomic movements. Through our hierarchically correlated atomic theory, we derive the characteristic times for local shear events in metallic glasses that entail activation, growth and/or annihilation of flow defects, which however are not accounted for in the previous mean field theories. Finally, we demonstrate that the current theoretical framework can be validated by the stress relaxation and creep experiments on typical La-based metallic glasses, which in turn provides quantitative insights into the non-elastic deformation mechanisms in metallic glasses. |
| Keyword | Metallic glass Stress relaxation Creep Non-elastic deformation |
| DOI | 10.1016/j.ijplas.2022.103288 |
| Indexed By | SCI ; EI |
| Language | 英语 |
| WOS ID | WOS:000789626900001 |
| WOS Keyword | PLASTIC-DEFORMATION ; BETA-RELAXATION ; FREE-VOLUME ; VISCOPLASTIC DEFORMATION ; INELASTIC DEFORMATION ; STRUCTURAL RELAXATION ; MECHANICAL-BEHAVIOR ; SHEAR ; TRANSFORMATION ; DYNAMICS |
| WOS Research Area | Engineering ; Materials Science ; Mechanics |
| WOS Subject | Engineering, Mechanical ; Materials Science, Multidisciplinary ; Mechanics |
| Funding Project | NSFC[12072344] ; Natural Science Basic Research Plan for Distinguished Young Scholars in Shaanxi Province[2021JC-12] ; MICINN[PID2020-112975GB-I00] ; Generalitat de Catalunya[2017SGR0042] ; Hong Kong government through the General Research Fund (GRF)[CityU11200719] ; Hong Kong government through the General Research Fund (GRF)[CityU11213118] ; Research Grant Council (RGC) ; Youth Innovation Promotion Association of the Chinese Academy of Sciences |
| Funding Organization | NSFC ; Natural Science Basic Research Plan for Distinguished Young Scholars in Shaanxi Province ; MICINN ; Generalitat de Catalunya ; Hong Kong government through the General Research Fund (GRF) ; Research Grant Council (RGC) ; Youth Innovation Promotion Association of the Chinese Academy of Sciences |
| Classification | 一类 |
| Ranking | 3+ |
| Contributor | Qiao, J. C. |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://dspace.imech.ac.cn/handle/311007/89073 |
| Collection | 非线性力学国家重点实验室 |
| Affiliation | 1.Northwestern Polytech Univ, Sch Mech Civil Engn & Architecture, Xian 710072, Peoples R China; 2.Chinese Acad Sci, Inst Mech, State Key Lab Nonlinear Mech, Beijing 100190, Peoples R China; 3.Univ Politecn Catalunya BarcelonaTech, Inst Energy Technol, Dept Phys, Barcelona 08019, Spain; 4.Univ Lyon, MATEIS, INSA Lyon, UMR CNRS5510, Bat B Pascal, F-69621 Villeurbanne, France; 5.Univ Chinese Acad Sci, Sch Engn Sci, Beijing 100049, Peoples R China; 6.City Univ Hong Kong, Coll Engn, Dept Mech Engn, Kowloon Tong,Kowloon, Tat Chee Ave, Hong Kong, Peoples R China; 7.City Univ Hong Kong, Coll Engn, Dept Mat Sci & Engn, Kowloon Tong,Kowloon, Tat Chee Ave, Hong Kong, Peoples R China |
| Recommended Citation GB/T 7714 | Hao Q,Lyu GJ,Pineda E,et al. A hierarchically correlated flow defect model for metallic glass: Universal understanding of stress relaxation and creep[J]. INTERNATIONAL JOURNAL OF PLASTICITY,2022,154:19.Rp_Au:Qiao, J. C. |
| APA | Hao Q,Lyu GJ,Pineda E,Pelletier JM.,Yang Y,&Qiao JC.(2022).A hierarchically correlated flow defect model for metallic glass: Universal understanding of stress relaxation and creep.INTERNATIONAL JOURNAL OF PLASTICITY,154,19. |
| MLA | Hao Q,et al."A hierarchically correlated flow defect model for metallic glass: Universal understanding of stress relaxation and creep".INTERNATIONAL JOURNAL OF PLASTICITY 154(2022):19. |
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| Jp2022FA284_2022_A h（7826KB） | 期刊论文 | 出版稿 | 开放获取 | CC BY-NC-SA | View Download | |
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