Knowledge Management System of Institue of Mechanics, CAS
| Molecular dynamics studies on dislocations in crystallites of nanocrystalline alpha-iron | |
Chen ZY(陈致英) ; Ding JQ(丁家强); Chen, ZY (reprint author), Acad Sinica, Inst Mech, Lab Nonlinear Mech Continuous Media, Beijing 100080, Peoples R China.
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| Source Publication | Nanostructured Materials
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| 1998 | |
| Volume | 10Issue:2Pages:205-215 |
| ISSN | 0965-9773 |
| Abstract | Molecular dynamics simulations have been carried our to study the atomic structure of the crystalline component of nanocrystalline alpha-iron. A two-dimensional computational block is used to simulate the consolidation process. It is found that dislocations are generated in the crystallites during consolidation when the grain size is large enough. The critical value of the grain size for dislocation generation appears to be about 9 nm. This result agrees with experiment qualitatively. AN dislocations that are preset in the original grains glide out during consolidation. It shows that dislocations in the crystallites we generated in consolidation process, but not in the original grains. Higher consolidation pressure results in more dislocations. Furthermore, new interfaces are found within crystallites. These interfaces might result from the special environment of nanomaterial. (C) 1998 Acta Metallurgica Inc. |
| DOI | 10.1016/S0965-9773(98)00060-9 |
| Indexed By | SCI |
| Language | 英语 |
| WOS ID | WOS:000075231200009 |
| 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/311007/33625 |
| Collection | 力学所知识产出(1956-2008) |
| Corresponding Author | Chen, ZY (reprint author), Acad Sinica, Inst Mech, Lab Nonlinear Mech Continuous Media, Beijing 100080, Peoples R China. |
| Recommended Citation GB/T 7714 | Chen ZY,Ding JQ,Chen, ZY . Molecular dynamics studies on dislocations in crystallites of nanocrystalline alpha-iron[J]. Nanostructured Materials,1998,10,2,:205-215. |
| APA | 陈致英,丁家强,&Chen, ZY .(1998).Molecular dynamics studies on dislocations in crystallites of nanocrystalline alpha-iron.Nanostructured Materials,10(2),205-215. |
| MLA | 陈致英,et al."Molecular dynamics studies on dislocations in crystallites of nanocrystalline alpha-iron".Nanostructured Materials 10.2(1998):205-215. |
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