| Function of cleavage strength for symmetrical tilt grain boundaries | |
| Hu SW(胡世威)1; Liang, Hao2; Yin, Yihui2; Liang, Yanxiang2; Zhang, Yuanzhang2; Yan, Yabin3; Li, Xiang4 | |
| Corresponding Author | Hu, Shiwei([email protected]) ; Liang, Hao([email protected]) |
| Source Publication | ENGINEERING FRACTURE MECHANICS
 |
| 2024-01-23 | |
| Volume | 295Pages:14 |
| ISSN | 0013-7944 |
| Abstract | The cleavage strength for grain boundaries (GBs) plays a crucial role in understanding the GBs' behavior and microstructure evolution during deformation. However, its universal discipline remains uncertain, and a quantitative description is currently unavailable. Here we propose the theoretical models to systematically quantify the strength of symmetrical tilt GBs in the discrete atomic perspectives. Specifically, based on the interaction of metallic atomic pairs, the interaction between the arbitrary parallel planes is expressed by considering the atomic pair distribution on both sides of the separated planes. On this basis, the function of GBs' cleavage strength is proposed by considering that the interaction at GBs is composed of the interaction of the interfaces that make up GBs and the interaction between mirror atomic pairs at both sides of the symmetry plane. Furthermore, the theoretical prediction of the critical energy release rate Gc for the sharp crack extension is proposed based on the present cleavage strength function. All the theoretical models are validated by the ab initio simulations or citations. This work quantitatively proposes the cleavage strength function of symmetrical tilt GBs, predicts the critical energy release rate for cleavage, and provides a new methodology for studying mechanical properties of materials in the discrete atomic perspectives. |
| Keyword | Cleavage strength Grain boundaries Theoretical model Ab initio tensile simulation Critical energy release rate |
| DOI | 10.1016/j.engfracmech.2023.109800 |
| Indexed By | SCI ; EI |
| Language | 英语 |
| WOS ID | WOS:001137694700001 |
| WOS Keyword | TOTAL-ENERGY CALCULATIONS ; UNIVERSAL FEATURES ; 1ST-PRINCIPLES ; SEGREGATION ; EMBRITTLEMENT ; EQUATION ; HYDROGEN ; METALS |
| WOS Research Area | Mechanics |
| WOS Subject | Mechanics |
| Funding Project | National Natural Science Foundation of China[11572298] |
| Funding Organization | National Natural Science Foundation of China |
| Classification | 一类 |
| Ranking | 1 |
| Contributor | Hu, Shiwei ; Liang, Hao |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://dspace.imech.ac.cn/handle/311007/94028 |
| Collection | 高温气体动力学国家重点实验室 |
| Affiliation | 1.Chinese Acad Sci, Inst Mech, Ctr Interdisciplinary Res Fluids, Beijing 100190, Peoples R China; 2.China Acad Engn Phys Mianyang, Inst Syst Engn, Sichuan 621999, Peoples R China; 3.East China Univ Sci & Technol, Sch Mech Power & Engn, Shanghai 200237, Peoples R China; 4.Southwest Univ Sci & Technol, Sch Mfg Sci & Engn, Mianyang 621010, Sichuan, Peoples R China |
| Recommended Citation GB/T 7714 | Hu SW,Liang, Hao,Yin, Yihui,et al. Function of cleavage strength for symmetrical tilt grain boundaries[J]. ENGINEERING FRACTURE MECHANICS,2024,295:14.Rp_Au:Hu, Shiwei, Liang, Hao |
| APA | 胡世威.,Liang, Hao.,Yin, Yihui.,Liang, Yanxiang.,Zhang, Yuanzhang.,...&Li, Xiang.(2024).Function of cleavage strength for symmetrical tilt grain boundaries.ENGINEERING FRACTURE MECHANICS,295,14. |
| MLA | 胡世威,et al."Function of cleavage strength for symmetrical tilt grain boundaries".ENGINEERING FRACTURE MECHANICS 295(2024):14. |
| Files in This Item: | There are no files associated with this item. | |||||
Items in the repository are protected by copyright, with all rights reserved, unless otherwise indicated.
Edit Comment