Molecular Dynamics Simulation of Hydrogen Enhancing Dislocation Emission.
文献类型:期刊论文
作者 | Zhou GH(周国辉); Zhou FX(周富信); Zhou FX; Zhao XD; Zhang WQ; Chen NX; Wan FR; Chu WY |
刊名 | SCIENCE IN CHINA SERIES E-TECHNOLOGICAL SCIENCES
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出版日期 | 1998 |
卷号 | 41期号:2页码:176-181 |
关键词 | hydrogen dislocation emission molecular dynamics computer simulation |
ISSN号 | 1006-9321 |
产权排序 | Univ Sci & Technol Beijing, Dept Mat Phys, Beijing 100083, Peoples R China; Chinese Acad Sci, Inst Mech, Beijing 100080, Peoples R China; Univ Sci & Technol Beijing, Dept Phys, Beijing 100083, Peoples R China |
通讯作者 | Zhou, GH (reprint author), Univ Sci & Technol Beijing, Dept Mat Phys, Beijing 100083, Peoples R China. |
中文摘要 | The interactive pair potential between Al and H is obtained based on the ab initio calculation and the Chen-Mobius 3D lattice inversion formula. By utilizing the pair potentials calculated, the effects of hydrogen on the dislocation emission from crack tip have been studied. The simulated result shows that hydrogen can reduce the cohesive strength for Al single crystal, and then the critical stress intensity factor for partial dislocation emission decreases from 0.11 MPa root m (C-H = 0) to 0.075 MPa root m (C-H=0.72%) and 0.06 MPa root m (C-H = 1.44%). This indicates thar hydrogen can enhance the dislocation emission. The simulation also shows that atoms of hydrogen can gather and turn into small bubbles, resulting in enhancement of the equilibrium vacancy concentration. |
类目[WOS] | Engineering, Multidisciplinary ; Materials Science, Multidisciplinary |
研究领域[WOS] | Engineering ; Materials Science |
关键词[WOS] | DEFORMATION ; FRACTURE |
收录类别 | SCI |
语种 | 英语 |
WOS记录号 | WOS:000073104900008 |
源URL | [http://dspace.imech.ac.cn/handle/311007/58493] ![]() |
专题 | 力学研究所_力学所知识产出(1956-2008) |
推荐引用方式 GB/T 7714 | Zhou GH,Zhou FX,Zhou FX,et al. Molecular Dynamics Simulation of Hydrogen Enhancing Dislocation Emission.[J]. SCIENCE IN CHINA SERIES E-TECHNOLOGICAL SCIENCES,1998,41(2):176-181. |
APA | 周国辉.,周富信.,Zhou FX.,Zhao XD.,Zhang WQ.,...&Chu WY.(1998).Molecular Dynamics Simulation of Hydrogen Enhancing Dislocation Emission..SCIENCE IN CHINA SERIES E-TECHNOLOGICAL SCIENCES,41(2),176-181. |
MLA | 周国辉,et al."Molecular Dynamics Simulation of Hydrogen Enhancing Dislocation Emission.".SCIENCE IN CHINA SERIES E-TECHNOLOGICAL SCIENCES 41.2(1998):176-181. |
入库方式: OAI收割
来源:力学研究所
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