Molecular Dynamics Study on Ductile Behavior of SiC during Nanoindentation
In order to clarify the plastic deformation mechanism of silicon carbide in cubic phase (3C-SiC), molecular dynamics (MD) simulations are performed on the nanoindentation using a spherical indenter. Transition from elastic deformation to plastic deformation has been confirmed by the phenomenon calle...
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Japanese Society of Tribologists
2016
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oai:doaj.org-article:40f9c5bbf09546249ee0497c6510cb222021-11-05T09:21:40ZMolecular Dynamics Study on Ductile Behavior of SiC during Nanoindentation1881-219810.2474/trol.11.183https://doaj.org/article/40f9c5bbf09546249ee0497c6510cb222016-04-01T00:00:00Zhttps://www.jstage.jst.go.jp/article/trol/11/2/11_183/_pdf/-char/enhttps://doaj.org/toc/1881-2198In order to clarify the plastic deformation mechanism of silicon carbide in cubic phase (3C-SiC), molecular dynamics (MD) simulations are performed on the nanoindentation using a spherical indenter. Transition from elastic deformation to plastic deformation has been confirmed by the phenomenon called pop-in in the load-displacement curves during nanoindentation. Dislocations on {1 1 1} slip planes are found during indentation. In order to analyze internal defects, common neighbor analysis (CNA) is slightly modified so that it is suitable for the analysis of slips of zinc-blend structure. In our method, the CNA is applied separately to sub-lattice of Si or C in the same SiC. By this method, structural changes are confirmed in a region with the shape of square pyramid when the pop-in behavior occurs. By measuring the atomic distances along the region of misalignment, it was confirmed that there is certainly atomic sliding by crystalline slip. Furthermore, it is found that, with increase of loading, dislocation loops spread along {1 1 1} slip planes.Takuya HanashiroKen-ichi SaitohTomohiro SatoKenji NishimuraMasanori TakumaYoshimasa TakahashiJapanese Society of Tribologistsarticlemolecular dynamicssilicon carbidenanoindentationplastic deformationPhysicsQC1-999Engineering (General). Civil engineering (General)TA1-2040Mechanical engineering and machineryTJ1-1570ChemistryQD1-999ENTribology Online, Vol 11, Iss 2, Pp 183-188 (2016) |
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DOAJ |
| collection |
DOAJ |
| language |
EN |
| topic |
molecular dynamics silicon carbide nanoindentation plastic deformation Physics QC1-999 Engineering (General). Civil engineering (General) TA1-2040 Mechanical engineering and machinery TJ1-1570 Chemistry QD1-999 |
| spellingShingle |
molecular dynamics silicon carbide nanoindentation plastic deformation Physics QC1-999 Engineering (General). Civil engineering (General) TA1-2040 Mechanical engineering and machinery TJ1-1570 Chemistry QD1-999 Takuya Hanashiro Ken-ichi Saitoh Tomohiro Sato Kenji Nishimura Masanori Takuma Yoshimasa Takahashi Molecular Dynamics Study on Ductile Behavior of SiC during Nanoindentation |
| description |
In order to clarify the plastic deformation mechanism of silicon carbide in cubic phase (3C-SiC), molecular dynamics (MD) simulations are performed on the nanoindentation using a spherical indenter. Transition from elastic deformation to plastic deformation has been confirmed by the phenomenon called pop-in in the load-displacement curves during nanoindentation. Dislocations on {1 1 1} slip planes are found during indentation. In order to analyze internal defects, common neighbor analysis (CNA) is slightly modified so that it is suitable for the analysis of slips of zinc-blend structure. In our method, the CNA is applied separately to sub-lattice of Si or C in the same SiC. By this method, structural changes are confirmed in a region with the shape of square pyramid when the pop-in behavior occurs. By measuring the atomic distances along the region of misalignment, it was confirmed that there is certainly atomic sliding by crystalline slip. Furthermore, it is found that, with increase of loading, dislocation loops spread along {1 1 1} slip planes. |
| format |
article |
| author |
Takuya Hanashiro Ken-ichi Saitoh Tomohiro Sato Kenji Nishimura Masanori Takuma Yoshimasa Takahashi |
| author_facet |
Takuya Hanashiro Ken-ichi Saitoh Tomohiro Sato Kenji Nishimura Masanori Takuma Yoshimasa Takahashi |
| author_sort |
Takuya Hanashiro |
| title |
Molecular Dynamics Study on Ductile Behavior of SiC during Nanoindentation |
| title_short |
Molecular Dynamics Study on Ductile Behavior of SiC during Nanoindentation |
| title_full |
Molecular Dynamics Study on Ductile Behavior of SiC during Nanoindentation |
| title_fullStr |
Molecular Dynamics Study on Ductile Behavior of SiC during Nanoindentation |
| title_full_unstemmed |
Molecular Dynamics Study on Ductile Behavior of SiC during Nanoindentation |
| title_sort |
molecular dynamics study on ductile behavior of sic during nanoindentation |
| publisher |
Japanese Society of Tribologists |
| publishDate |
2016 |
| url |
https://doaj.org/article/40f9c5bbf09546249ee0497c6510cb22 |
| work_keys_str_mv |
AT takuyahanashiro moleculardynamicsstudyonductilebehaviorofsicduringnanoindentation AT kenichisaitoh moleculardynamicsstudyonductilebehaviorofsicduringnanoindentation AT tomohirosato moleculardynamicsstudyonductilebehaviorofsicduringnanoindentation AT kenjinishimura moleculardynamicsstudyonductilebehaviorofsicduringnanoindentation AT masanoritakuma moleculardynamicsstudyonductilebehaviorofsicduringnanoindentation AT yoshimasatakahashi moleculardynamicsstudyonductilebehaviorofsicduringnanoindentation |
| _version_ |
1718444405435662336 |