Ductile-brittle behavior at blunted cavities in 3D iron crystals uncovered and covered by copper atoms
This paper is devoted to studies of the mechanical response of an atomically blunted cavity uncovered and covered by copper atoms by means 3D molecular dynamic (MD) simulations. The cavity is loaded uni-axially in tension mode I. Our question is how the copper atoms influence the ductile-brittle beh...
| Main Authors: | , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
University of West Bohemia
2010-12-01
|
| Series: | Applied and Computational Mechanics |
| Subjects: | |
| Online Access: | http://www.kme.zcu.cz/acm/index.php/acm/article/view/48/56 |
| _version_ | 1818723804073951232 |
|---|---|
| author | Pelikán V. Hora P. Červená O. Spielmannová A. Machová A. |
| author_facet | Pelikán V. Hora P. Červená O. Spielmannová A. Machová A. |
| author_sort | Pelikán V. |
| collection | DOAJ |
| description | This paper is devoted to studies of the mechanical response of an atomically blunted cavity uncovered and covered by copper atoms by means 3D molecular dynamic (MD) simulations. The cavity is loaded uni-axially in tension mode I. Our question is how the copper atoms influence the ductile-brittle behavior at the crack front of the blunted cavity in comparison with the blunted cavity in pure bcc iron. We show that the dislocation emission is easier in the Fe–Cu system in comparison with pure bcc iron. However, stability of the blunted cavities seems to be weaker in copper region than in pure bcc iron. |
| first_indexed | 2024-12-17T21:16:20Z |
| format | Article |
| id | doaj.art-8acd3d0c81b14a0091edce4a6c249a9a |
| institution | Directory Open Access Journal |
| issn | 1802-680X |
| language | English |
| last_indexed | 2024-12-17T21:16:20Z |
| publishDate | 2010-12-01 |
| publisher | University of West Bohemia |
| record_format | Article |
| series | Applied and Computational Mechanics |
| spelling | doaj.art-8acd3d0c81b14a0091edce4a6c249a9a2022-12-21T21:32:19ZengUniversity of West BohemiaApplied and Computational Mechanics1802-680X2010-12-0142191200Ductile-brittle behavior at blunted cavities in 3D iron crystals uncovered and covered by copper atomsPelikán V.Hora P.Červená O.Spielmannová A.Machová A.This paper is devoted to studies of the mechanical response of an atomically blunted cavity uncovered and covered by copper atoms by means 3D molecular dynamic (MD) simulations. The cavity is loaded uni-axially in tension mode I. Our question is how the copper atoms influence the ductile-brittle behavior at the crack front of the blunted cavity in comparison with the blunted cavity in pure bcc iron. We show that the dislocation emission is easier in the Fe–Cu system in comparison with pure bcc iron. However, stability of the blunted cavities seems to be weaker in copper region than in pure bcc iron.http://www.kme.zcu.cz/acm/index.php/acm/article/view/48/56Molecular dynamicsBCC iron crystalBlunted cavityCopper coverDuctile-brittle behavior |
| spellingShingle | Pelikán V. Hora P. Červená O. Spielmannová A. Machová A. Ductile-brittle behavior at blunted cavities in 3D iron crystals uncovered and covered by copper atoms Applied and Computational Mechanics Molecular dynamics BCC iron crystal Blunted cavity Copper cover Ductile-brittle behavior |
| title | Ductile-brittle behavior at blunted cavities in 3D iron crystals uncovered and covered by copper atoms |
| title_full | Ductile-brittle behavior at blunted cavities in 3D iron crystals uncovered and covered by copper atoms |
| title_fullStr | Ductile-brittle behavior at blunted cavities in 3D iron crystals uncovered and covered by copper atoms |
| title_full_unstemmed | Ductile-brittle behavior at blunted cavities in 3D iron crystals uncovered and covered by copper atoms |
| title_short | Ductile-brittle behavior at blunted cavities in 3D iron crystals uncovered and covered by copper atoms |
| title_sort | ductile brittle behavior at blunted cavities in 3d iron crystals uncovered and covered by copper atoms |
| topic | Molecular dynamics BCC iron crystal Blunted cavity Copper cover Ductile-brittle behavior |
| url | http://www.kme.zcu.cz/acm/index.php/acm/article/view/48/56 |
| work_keys_str_mv | AT pelikanv ductilebrittlebehavioratbluntedcavitiesin3dironcrystalsuncoveredandcoveredbycopperatoms AT horap ductilebrittlebehavioratbluntedcavitiesin3dironcrystalsuncoveredandcoveredbycopperatoms AT cervenao ductilebrittlebehavioratbluntedcavitiesin3dironcrystalsuncoveredandcoveredbycopperatoms AT spielmannovaa ductilebrittlebehavioratbluntedcavitiesin3dironcrystalsuncoveredandcoveredbycopperatoms AT machovaa ductilebrittlebehavioratbluntedcavitiesin3dironcrystalsuncoveredandcoveredbycopperatoms |