Insensitivity of Grain boundary Stress Fields to Area Variations
文献类型：期刊论文
| 作者 | Yang, Jinbo1,2; Chen, Yaling1,2; Guo, Yu1,2; Meng, Lingxiao1,2; Yan, Jingxin3; Yang, Huajie4; Zhang, Zhefeng1,2 |
| 刊名 | PHYSICA STATUS SOLIDI B-BASIC SOLID STATE PHYSICS
 |
| 出版日期 | 2024-06-22 |
| 页码 | 12 |
| 关键词 | area size effect dislocation structures grain boundary molecular dynamics nanometer grain |
| ISSN号 | 0370-1972 |
| DOI | 10.1002/pssb.202400184 |
| 通讯作者 | Yang, Jinbo(jbyang@imr.ac.cn) |
| 英文摘要 | The atomistic simulations in this article substantiate that grain boundary stress fields remain unaffected by changes in their area, aligning with the Olson-Cohen theory which supports that such area insensitivity is an inherent outcome of the combined effect of coherency and anti-coherency dislocations. Twist grain boundaries are employed in alpha-iron as a model in atomistic simulations, revealing and contrasting the dislocations and stresses of these grain boundaries when their area varies from infinity to a few square nanometers. It is discovered that the grain boundary stresses remain relatively constant, always short-ranged. Furthermore, within the framework of the Frank-Bilby equation, the line directions and spacing of coherency and anti-coherency dislocation arrays in a grain boundary are predicted, the stresses of these dislocations are subsequently calculated numerically, and these stresses are superimposed together to form the grain boundary stress field. The numerical calculations verify that stress fields of grain boundaries are not sensitive to changes of their area, corroborating our atomistic simulations. The preliminary atomistic simulations of various homophase and heterophase boundaries further affirm this area insensitivity. Atomistic simulations and numerical calculations demonstrate that the area insensitivity of grain boundary stress fields can be attributed to the net boundary dislocation content of zero and that all real grain boundaries with finite areas have short-range stress fields and finite boundary energy.image (c) 2024 WILEY-VCH GmbH |
| 资助项目 | National Natural Science Foundation of China[51771206] ; National Natural Science Foundation of China[52071316] ; National Natural Science Foundation of China (NSFC)[GJTD-2020-09] ; KC Wong Education Foundation |
| WOS研究方向 | Physics |
| 语种 | 英语 |
| WOS记录号 | WOS:001251597400001 |
| 出版者 | WILEY-V C H VERLAG GMBH |
| 资助机构 | National Natural Science Foundation of China ; National Natural Science Foundation of China (NSFC) ; KC Wong Education Foundation |
| 源URL |  |
| 专题 | 金属研究所_中国科学院金属研究所 |
| 通讯作者 | Yang, Jinbo |
| 作者单位 | 1.Chinese Acad Sci, Shi Changxu Innovat Ctr Adv Mat, Inst Met Res, Shenyang 110016, Peoples R China 2.Univ Sci & Technol China, Sch Mat Sci & Engn, Shenyang 110016, Peoples R China 3.Chongqing Jiaotong Univ, Sch Mat Sci & Engn, Chongqing 400074, Peoples R China 4.SuZhou Lab, Suzhou 215028, Peoples R China |
| 推荐引用方式 GB/T 7714 | Yang, Jinbo,Chen, Yaling,Guo, Yu,et al. Insensitivity of Grain boundary Stress Fields to Area Variations[J]. PHYSICA STATUS SOLIDI B-BASIC SOLID STATE PHYSICS,2024:12. |
| APA | Yang, Jinbo.,Chen, Yaling.,Guo, Yu.,Meng, Lingxiao.,Yan, Jingxin.,...&Zhang, Zhefeng.(2024).Insensitivity of Grain boundary Stress Fields to Area Variations.PHYSICA STATUS SOLIDI B-BASIC SOLID STATE PHYSICS,12. |
| MLA | Yang, Jinbo,et al."Insensitivity of Grain boundary Stress Fields to Area Variations".PHYSICA STATUS SOLIDI B-BASIC SOLID STATE PHYSICS (2024):12. |
入库方式： OAI收割
来源：金属研究所
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