IMECH-IR  > 力学所知识产出(1956-2008)
Molecular Dynamics Simulation of Hydrogen Enhancing Dislocation Emission.
Zhou GH(周国辉); Zhou FX(周富信); Zhou FX; Zhao XD; Zhang WQ; Chen NX; Wan FR; Chu WY; Zhou, GH (reprint author), Univ Sci & Technol Beijing, Dept Mat Phys, Beijing 100083, Peoples R China.
Source PublicationSCIENCE IN CHINA SERIES E-TECHNOLOGICAL SCIENCES
1998
Volume41Issue:2Pages:176-181
ISSN1006-9321
AbstractThe 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.
KeywordHydrogen Dislocation Emission Molecular Dynamics Computer Simulation
DOI10.1007/BF02919680
Indexed BySCI
Language英语
WOS IDWOS:000073104900008
WOS KeywordDEFORMATION ; FRACTURE
WOS Research AreaEngineering ; Materials Science
WOS SubjectEngineering, Multidisciplinary ; Materials Science, Multidisciplinary
Citation statistics
Cited Times:9[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://dspace.imech.ac.cn/handle/311007/58493
Collection力学所知识产出(1956-2008)
Corresponding AuthorZhou, GH (reprint author), Univ Sci & Technol Beijing, Dept Mat Phys, Beijing 100083, Peoples R China.
Recommended Citation
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.,...&Zhou, GH .(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.
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