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); Wan FR(万发荣) |
| 刊名 | 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
 |
| 出版日期 | 1998 |
| 卷号 | 145-154页码:123-128 |
| ISSN号 | 1013-9826 |
| 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. |
| 学科主题 | 力学 |
| 类目[WOS] | Materials Science, Multidisciplinary |
| 研究领域[WOS] | Materials Science |
| 关键词[WOS] | DEFORMATION ; FRACTURE |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000071189200019 |
| 公开日期 | 2007-06-15 |
| 源URL | [http://dspace.imech.ac.cn/handle/311007/16629]  |
| 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,Wan FR. 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.(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. |
入库方式： OAI收割
来源：力学研究所
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