Effect of twin boundary on nanoimprint process of bicrystal Al thin film studied by molecular dynamics simulation
The effects of a twin boundary（TB） on the mechanical properties of two types of bicrystal Al thin films during the nanoimprint process are investigated by using molecular dynamics simulations.The results indicate that for the TB direction parallel to the imprinting direction,the yield stress reaches...
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| Published in | Chinese physics B Vol. 24; no. 2; pp. 336 - 342 |
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| Main Author | |
| Format | Journal Article |
| Language | English |
| Published |
01.02.2015
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| Subjects | |
| Online Access | Get full text |
| ISSN | 1674-1056 2058-3834 1741-4199 |
| DOI | 10.1088/1674-1056/24/2/026201 |
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| Abstract | The effects of a twin boundary（TB） on the mechanical properties of two types of bicrystal Al thin films during the nanoimprint process are investigated by using molecular dynamics simulations.The results indicate that for the TB direction parallel to the imprinting direction,the yield stress reaches the maximum for the initial dislocation nucleation when the mould directly imprints to the TB,and the yield stress first decreases with the increase of the marker interval and then increases.However,for the TB direction perpendicular to the imprinting direction,the effect of the TB location to the imprinting forces is very small,and the yield stress is greater than that with the TB direction parallel to the imprinting direction.The results also demonstrate that the direction of the slip dislocations and the deformation of the thin film caused by spring-back are different due to various positions and directions of the TB. |
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| AbstractList | The effects of a twin boundary (TB) on the mechanical properties of two types of bicrystal Al thin films during the nanoimprint process are investigated by using molecular dynamics simulations. The results indicate that for the TB direction parallel to the imprinting direction, the yield stress reaches the maximum for the initial dislocation nucleation when the mould directly imprints to the TB, and the yield stress first decreases with the increase of the marker interval and then increases. However, for the TB direction perpendicular to the imprinting direction, the effect of the TB location to the imprinting forces is very small, and the yield stress is greater than that with the TB direction parallel to the imprinting direction. The results also demonstrate that the direction of the slip dislocations and the deformation of the thin film caused by spring-back are different due to various positions and directions of the TB. The effects of a twin boundary（TB） on the mechanical properties of two types of bicrystal Al thin films during the nanoimprint process are investigated by using molecular dynamics simulations.The results indicate that for the TB direction parallel to the imprinting direction,the yield stress reaches the maximum for the initial dislocation nucleation when the mould directly imprints to the TB,and the yield stress first decreases with the increase of the marker interval and then increases.However,for the TB direction perpendicular to the imprinting direction,the effect of the TB location to the imprinting forces is very small,and the yield stress is greater than that with the TB direction parallel to the imprinting direction.The results also demonstrate that the direction of the slip dislocations and the deformation of the thin film caused by spring-back are different due to various positions and directions of the TB. |
| Author | 谢月红 徐建刚 宋海洋 张云光 |
| AuthorAffiliation | School of Science, Xi ＇ an University of Posts and Telecommunications, Xi ＇an 710121, China College of Materials Science and Engineering, Xi＇ an Shiyou University, Xi＇an 710065, China |
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| Cites_doi | 10.1063/1.2769946 10.1016/j.physb.2010.01.071 10.1116/1.588605 10.1103/PhysRevB.29.6443 10.1143/JJAP.43.7665 10.1103/PhysRevLett.50.1285 10.1016/j.apsusc.2009.01.069 10.1117/1.3642641 10.1063/1.114851 10.1088/0022-3727/40/16/026 10.1016/S0167-9317(96)00097-4 10.1016/j.apsusc.2011.03.073 10.1103/PhysRevB.48.22 10.1016/j.pmatsci.2011.05.001 10.1016/j.mee.2012.02.033 10.1016/j.physb.2013.04.046 10.1021/nl0506094 10.1016/j.commatsci.2011.09.027 10.7498/aps.63.018102 10.1063/1.4752024 10.1016/j.apsusc.2013.11.072 10.4028/www.scientific.net/MSF.505-507.133 10.1088/0965-0393/18/3/034006 10.1016/j.mee.2009.12.050 10.1063/1.3687908 10.1016/j.commatsci.2005.01.004 10.1016/j.mee.2006.01.095 10.1016/j.apsusc.2007.02.017 10.1016/j.actamat.2012.09.018 10.1016/j.msea.2013.05.033 10.1016/j.jmatprotec.2008.11.030 10.1016/0927-0256(94)90109-0 10.1103/PhysRevB.85.054109 10.7498/aps.58.1057 |
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| DocumentTitleAlternate | Effect of twin boundary on nanoimprint process of bicrystal Al thin film studied by molecular dynamics simulation |
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| Notes | The effects of a twin boundary（TB） on the mechanical properties of two types of bicrystal Al thin films during the nanoimprint process are investigated by using molecular dynamics simulations.The results indicate that for the TB direction parallel to the imprinting direction,the yield stress reaches the maximum for the initial dislocation nucleation when the mould directly imprints to the TB,and the yield stress first decreases with the increase of the marker interval and then increases.However,for the TB direction perpendicular to the imprinting direction,the effect of the TB location to the imprinting forces is very small,and the yield stress is greater than that with the TB direction parallel to the imprinting direction.The results also demonstrate that the direction of the slip dislocations and the deformation of the thin film caused by spring-back are different due to various positions and directions of the TB. Xie Yue-Hong, Xu Jian-Gang, Song Hai-Yang, and Zhang Yun-Guang（a） School of Science, Xi＇an University of Posts and Telecommunications, Xi＇an 710121, China ; b） College of Materials Science and Engineering, Xi ＇ an Shiyou University, Xi ＇ an 710065, China 11-5639/O4 nanoimprint, molecular dynamic simulation, twin boundary ObjectType-Article-1 SourceType-Scholarly Journals-1 ObjectType-Feature-2 content type line 23 |
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| References | 22 23 24 26 27 28 29 He S Z (11) 2013; 22 Ao B Y (10) 2012; 21 Pei Q X (18) 2007; 40 Zhang Y H (40) 2010; 18 Hsu Q C (15) 2004; 43 30 31 33 Qu S X (36) 2010; 21 12 34 13 35 37 16 38 17 39 19 Stukowski A (32) 2010; 18 An M R (14) 2012; 21 1 2 3 Zhang J J (25) 2014; 47 4 5 6 7 8 9 20 21 |
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| Snippet | The effects of a twin boundary（TB） on the mechanical properties of two types of bicrystal Al thin films during the nanoimprint process are investigated by... The effects of a twin boundary (TB) on the mechanical properties of two types of bicrystal Al thin films during the nanoimprint process are investigated by... |
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| SubjectTerms | Aluminum Bicrystals Dislocations Molecular dynamics Nanostructure Simulation Thin films Twin boundaries Yield stress 分子动力学模拟 压印工艺 双晶 孪晶界 屈服应力 纳米 结核病 铝薄膜 |
| Title | Effect of twin boundary on nanoimprint process of bicrystal Al thin film studied by molecular dynamics simulation |
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