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Function of cleavage strength for symmetrical tilt grain boundaries

文献类型：期刊论文

作者Hu SW(胡世威)4; Liang, Hao3; Yin, Yihui3; Liang, Yanxiang3; Zhang, Yuanzhang3; Yan, Yabin2; Li, Xiang1
刊名ENGINEERING FRACTURE MECHANICS
出版日期2024-01-23
卷号295页码:14
ISSN号0013-7944
关键词Cleavage strength Grain boundaries Theoretical model Ab initio tensile simulation Critical energy release rate
DOI10.1016/j.engfracmech.2023.109800
通讯作者Hu, Shiwei(hushiwei@imech.ac.cn) ; Liang, Hao(lh-lhm@163.com)
英文摘要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.
分类号一类
WOS关键词TOTAL-ENERGY CALCULATIONS ; UNIVERSAL FEATURES ; 1ST-PRINCIPLES ; SEGREGATION ; EMBRITTLEMENT ; EQUATION ; HYDROGEN ; METALS
资助项目National Natural Science Foundation of China[11572298]
WOS研究方向Mechanics
语种英语
WOS记录号WOS:001137694700001
资助机构National Natural Science Foundation of China
其他责任者Hu, Shiwei ; Liang, Hao
源URL[http://dspace.imech.ac.cn/handle/311007/94027]  
专题力学研究所_高温气体动力学国家重点实验室
作者单位1.Southwest Univ Sci & Technol, Sch Mfg Sci & Engn, Mianyang 621010, Sichuan, Peoples R China
2.East China Univ Sci & Technol, Sch Mech Power & Engn, Shanghai 200237, Peoples R China;
3.China Acad Engn Phys Mianyang, Inst Syst Engn, Sichuan 621999, Peoples R China;
4.Chinese Acad Sci, Inst Mech, Ctr Interdisciplinary Res Fluids, Beijing 100190, Peoples R China;
推荐引用方式
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.
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.

入库方式： OAI收割

来源：力学研究所

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