| Atomic insights into the ductile-brittle competition of cracks under dissolution | |
Liu L(刘龙); Yuan QZ(袁泉子)
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| Source Publication | EXTREME MECHANICS LETTERS
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| 2024-12 | |
| Volume | 73Pages:102256 |
| ISSN | 2352-4316 |
| Abstract | Environmental effects can determine the ductile-brittle behavior of cracks at the atomic scale, but the underlying processes remain poorly understood and contentious. Here, we report the competition between ductile and brittle behaviors at crack tips induced by the prevalent environmental effect of dissolution. Our findings reveal that this competition is driven by two fundamental deformation mechanisms related to dissolution: crack blunting and defect accumulation. Through separate evaluations of dissolution-induced cleavage and dissolution-induced plasticity, we demonstrate that these deformation mechanisms not only dominate brittle fracture toughness but also lead to dislocation slip. We have developed a theoretical model to predict the ductile and brittle behavior of cracks under dissolution, and the theory aligns well with the simulation results and remains consistent with existing experimental trends. This work will broaden the microscopic understanding of ductile and brittle fracture of cracks in complex environments. |
| Keyword | Fracture Dissolution Cleavage Dislocation slip Brittle-ductile transition Molecular dynamics |
| DOI | 10.1016/j.eml.2024.102256 |
| Indexed By | SCI ; EI |
| Language | 英语 |
| WOS ID | WOS:001357391000001 |
| WOS Research Area | Engineering ; Materials Science ; Mechanics |
| WOS Subject | Engineering, Mechanical ; Materials Science, Multidisciplinary ; Mechanics |
| Funding Organization | National Natural Science Founda-tion of China {12072346, 12032019] ; National Key Research and Development Program of China {2022YFA1203200] ; Strategic Priority Research Program of the Chinese Academy of Sciences {XDB0620103] |
| Classification | 二类/Q1 |
| Ranking | 1 |
| Contributor | Yuan QZ |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://dspace.imech.ac.cn/handle/311007/97242 |
| Collection | 非线性力学国家重点实验室 |
| Affiliation | 1.【Liu, Long & Yuan, Quanzi】 Chinese Acad Sci, Inst Mech, State Key Lab Nonlinear Mech, Beijing 100190, Peoples R China 2.【Liu, Long & Yuan, Quanzi】 Univ Chinese Acad Sci, Sch Engn Sci, Beijing 100049, Peoples R China |
| Recommended Citation GB/T 7714 | Liu L,Yuan QZ. Atomic insights into the ductile-brittle competition of cracks under dissolution[J]. EXTREME MECHANICS LETTERS,2024,73:102256.Rp_Au:Yuan QZ |
| APA | 刘龙,&袁泉子.(2024).Atomic insights into the ductile-brittle competition of cracks under dissolution.EXTREME MECHANICS LETTERS,73,102256. |
| MLA | 刘龙,et al."Atomic insights into the ductile-brittle competition of cracks under dissolution".EXTREME MECHANICS LETTERS 73(2024):102256. |
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