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| Molecular dynamics simulation of hydrogen enhancing dislocation emission | |
| Zhou GH(周国辉); Zhou FX(周富信); Wan FR(万发荣); Zhou, GH (reprint author), Univ Sci & Technol Beijing, Dept Mat Phys, Beijing 100083, Peoples R China. | |
| Source Publication | Key Engineering Materials:FRACTURE AND STRENGTH OF SOLIDS, PTS 1 AND 2: PT 1: FRACTURE MECHANICS OF MATERIALS; PT 2: BEHAVIOR OF MATERIALS AND STRUCTURE
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| 1998 | |
| Volume | 145-154Pages:123-128 |
| ISSN | 1013-9826 |
| Abstract | 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. |
| Subject Area | 力学 |
| Indexed By | SCI |
| Language | 英语 |
| WOS ID | WOS:000071189200019 |
| WOS Keyword | DEFORMATION ; FRACTURE |
| WOS Research Area | Materials Science |
| WOS Subject | Materials Science, Multidisciplinary |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://dspace.imech.ac.cn/handle/311007/16629 |
| Collection | 力学所知识产出(1956-2008) |
| Corresponding Author | Zhou, GH (reprint author), Univ Sci & Technol Beijing, Dept Mat Phys, Beijing 100083, Peoples R China. |
| Recommended Citation GB/T 7714 | Zhou GH,Zhou FX,Wan FR,et al. Molecular dynamics simulation of hydrogen enhancing dislocation emission[J]. Key Engineering Materials:FRACTURE AND STRENGTH OF SOLIDS, PTS 1 AND 2: PT 1: FRACTURE MECHANICS OF MATERIALS; PT 2: BEHAVIOR OF MATERIALS AND STRUCTURE,1998,145-154:123-128. |
| APA | Zhou GH,Zhou FX,Wan FR,&Zhou, GH .(1998).Molecular dynamics simulation of hydrogen enhancing dislocation emission.Key Engineering Materials:FRACTURE AND STRENGTH OF SOLIDS, PTS 1 AND 2: PT 1: FRACTURE MECHANICS OF MATERIALS; PT 2: BEHAVIOR OF MATERIALS AND STRUCTURE,145-154,123-128. |
| MLA | Zhou GH,et al."Molecular dynamics simulation of hydrogen enhancing dislocation emission".Key Engineering Materials:FRACTURE AND STRENGTH OF SOLIDS, PTS 1 AND 2: PT 1: FRACTURE MECHANICS OF MATERIALS; PT 2: BEHAVIOR OF MATERIALS AND STRUCTURE 145-154(1998):123-128. |
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| Molecular dynamics s（198KB） | 期刊论文 | 出版稿 | 开放获取 | CC BY-NC-SA | View Download | |
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