Multiscale Simulation of Surface Defects Influence Nanoindentation by a Quasi-Continuum Method
Microscopic properties of nanocrystal aluminum thin film have been investigated using the quasicontinuum method in order to study the influence of surface defects in nanoindentation. Various distances between the surface defect and indenter have been taken into account. The results show that as the...
| Main Authors: | , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
MDPI AG
2018-07-01
|
| Series: | Crystals |
| Subjects: | |
| Online Access: | http://www.mdpi.com/2073-4352/8/7/291 |
| _version_ | 1818001835575738368 |
|---|---|
| author | Zhongli Zhang Yushan Ni Jinming Zhang Can Wang Kun Jiang Xuedi Ren |
| author_facet | Zhongli Zhang Yushan Ni Jinming Zhang Can Wang Kun Jiang Xuedi Ren |
| author_sort | Zhongli Zhang |
| collection | DOAJ |
| description | Microscopic properties of nanocrystal aluminum thin film have been investigated using the quasicontinuum method in order to study the influence of surface defects in nanoindentation. Various distances between the surface defect and indenter have been taken into account. The results show that as the distance between the pit and indenter increases, the nanohardness increases in a wave pattern associated with a cycle of three atoms, which is closely related to the crystal structure of periodic atoms arrangement on {1 1 1} atomic close-packed planes of face-centered cubic metal; when the adjacent distance between the pit and indenter is more than 16 atomic spacing, there is almost no effect on nanohardness. In addition, the theoretical formula for the necessary load for elastic-to-plastic transition of Al film has been modified with the initial surface defect size, which may contribute to the investigation of material property with surface defects. |
| first_indexed | 2024-04-14T03:38:27Z |
| format | Article |
| id | doaj.art-2dde10f9faf14019af6011835c7f2656 |
| institution | Directory Open Access Journal |
| issn | 2073-4352 |
| language | English |
| last_indexed | 2024-04-14T03:38:27Z |
| publishDate | 2018-07-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Crystals |
| spelling | doaj.art-2dde10f9faf14019af6011835c7f26562022-12-22T02:14:37ZengMDPI AGCrystals2073-43522018-07-018729110.3390/cryst8070291cryst8070291Multiscale Simulation of Surface Defects Influence Nanoindentation by a Quasi-Continuum MethodZhongli Zhang0Yushan Ni1Jinming Zhang2Can Wang3Kun Jiang4Xuedi Ren5Department of Aeronautics and Astronautics, Fudan University, Shanghai 200433, ChinaDepartment of Aeronautics and Astronautics, Fudan University, Shanghai 200433, ChinaShanghai Institute of Measurement and Testing Technology, Shanghai 201203, ChinaShanghai Institute of Measurement and Testing Technology, Shanghai 201203, ChinaShanghai Institute of Measurement and Testing Technology, Shanghai 201203, ChinaShanghai Institute of Measurement and Testing Technology, Shanghai 201203, ChinaMicroscopic properties of nanocrystal aluminum thin film have been investigated using the quasicontinuum method in order to study the influence of surface defects in nanoindentation. Various distances between the surface defect and indenter have been taken into account. The results show that as the distance between the pit and indenter increases, the nanohardness increases in a wave pattern associated with a cycle of three atoms, which is closely related to the crystal structure of periodic atoms arrangement on {1 1 1} atomic close-packed planes of face-centered cubic metal; when the adjacent distance between the pit and indenter is more than 16 atomic spacing, there is almost no effect on nanohardness. In addition, the theoretical formula for the necessary load for elastic-to-plastic transition of Al film has been modified with the initial surface defect size, which may contribute to the investigation of material property with surface defects.http://www.mdpi.com/2073-4352/8/7/291nanoindentationquasicontinuum methodsurface defectmultiscale simulation |
| spellingShingle | Zhongli Zhang Yushan Ni Jinming Zhang Can Wang Kun Jiang Xuedi Ren Multiscale Simulation of Surface Defects Influence Nanoindentation by a Quasi-Continuum Method Crystals nanoindentation quasicontinuum method surface defect multiscale simulation |
| title | Multiscale Simulation of Surface Defects Influence Nanoindentation by a Quasi-Continuum Method |
| title_full | Multiscale Simulation of Surface Defects Influence Nanoindentation by a Quasi-Continuum Method |
| title_fullStr | Multiscale Simulation of Surface Defects Influence Nanoindentation by a Quasi-Continuum Method |
| title_full_unstemmed | Multiscale Simulation of Surface Defects Influence Nanoindentation by a Quasi-Continuum Method |
| title_short | Multiscale Simulation of Surface Defects Influence Nanoindentation by a Quasi-Continuum Method |
| title_sort | multiscale simulation of surface defects influence nanoindentation by a quasi continuum method |
| topic | nanoindentation quasicontinuum method surface defect multiscale simulation |
| url | http://www.mdpi.com/2073-4352/8/7/291 |
| work_keys_str_mv | AT zhonglizhang multiscalesimulationofsurfacedefectsinfluencenanoindentationbyaquasicontinuummethod AT yushanni multiscalesimulationofsurfacedefectsinfluencenanoindentationbyaquasicontinuummethod AT jinmingzhang multiscalesimulationofsurfacedefectsinfluencenanoindentationbyaquasicontinuummethod AT canwang multiscalesimulationofsurfacedefectsinfluencenanoindentationbyaquasicontinuummethod AT kunjiang multiscalesimulationofsurfacedefectsinfluencenanoindentationbyaquasicontinuummethod AT xuediren multiscalesimulationofsurfacedefectsinfluencenanoindentationbyaquasicontinuummethod |