Mechanical properties of nano and bulk Fe pillars using molecular dynamics and dislocation dynamics simulation
Using molecular dynamics simulation, tension and bending tests of a Fe nanopillar are carried out to obtain its Young’s modulus and yield strength. Then the comparative study of Young’s modulus and yield strength of a Fe nanopillar under bending and tension are carried out varying its diameter in th...
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| Format: | Article |
| Language: | English |
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AIP Publishing LLC
2017-10-01
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| Series: | AIP Advances |
| Online Access: | http://dx.doi.org/10.1063/1.5000553 |
| _version_ | 1818538874418233344 |
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| author | S. K. Deb Nath |
| author_facet | S. K. Deb Nath |
| author_sort | S. K. Deb Nath |
| collection | DOAJ |
| description | Using molecular dynamics simulation, tension and bending tests of a Fe nanopillar are carried out to obtain its Young’s modulus and yield strength. Then the comparative study of Young’s modulus and yield strength of a Fe nanopillar under bending and tension are carried out varying its diameter in the range of diameter 1-15nm. We find out the reasons why bending Young’s modulus and yield strength of a Fe nanopillar are higher than those of tension Young’s modulus and yield strength of a Fe nanopillar. Using the mobility parameters of bulk Fe from the experimental study [N. Urabe and J. Weertman, Materials Science and Engineering 18, 41 (1975)], its temperature dependent stress-strain relationship, yield strength and strain hardening modulus are obtained from the dislocation dynamics simulations. Strain rate dependent yield strength and strain hardening modulus of bulk Fe pillars under tension are studied. Temperature dependent creep behaviors of bulk Fe pillars under tension are also studied. To verify the soundness of the present dislocation dynamics studies of the mechanical properties of bulk Fe pillars under tension, the stress vs. strain relationship and dislocation density vs. strain of bulk Fe pillars obtained by us are compared with the published results obtained by S. Queyreau, G. Monnet, and B. Devincre, International Journal of Plasticity 25, 361 (2009). |
| first_indexed | 2024-12-11T21:34:37Z |
| format | Article |
| id | doaj.art-07e78f258f6b4723aa270ae4868ba0ec |
| institution | Directory Open Access Journal |
| issn | 2158-3226 |
| language | English |
| last_indexed | 2024-12-11T21:34:37Z |
| publishDate | 2017-10-01 |
| publisher | AIP Publishing LLC |
| record_format | Article |
| series | AIP Advances |
| spelling | doaj.art-07e78f258f6b4723aa270ae4868ba0ec2022-12-22T00:50:03ZengAIP Publishing LLCAIP Advances2158-32262017-10-01710105203105203-1010.1063/1.5000553011710ADVMechanical properties of nano and bulk Fe pillars using molecular dynamics and dislocation dynamics simulationS. K. Deb Nath0Institute for Materials Research, Tohoku University, 2-1-1 Katahira, Aoba-ku, Sendai 980-8577 JapanUsing molecular dynamics simulation, tension and bending tests of a Fe nanopillar are carried out to obtain its Young’s modulus and yield strength. Then the comparative study of Young’s modulus and yield strength of a Fe nanopillar under bending and tension are carried out varying its diameter in the range of diameter 1-15nm. We find out the reasons why bending Young’s modulus and yield strength of a Fe nanopillar are higher than those of tension Young’s modulus and yield strength of a Fe nanopillar. Using the mobility parameters of bulk Fe from the experimental study [N. Urabe and J. Weertman, Materials Science and Engineering 18, 41 (1975)], its temperature dependent stress-strain relationship, yield strength and strain hardening modulus are obtained from the dislocation dynamics simulations. Strain rate dependent yield strength and strain hardening modulus of bulk Fe pillars under tension are studied. Temperature dependent creep behaviors of bulk Fe pillars under tension are also studied. To verify the soundness of the present dislocation dynamics studies of the mechanical properties of bulk Fe pillars under tension, the stress vs. strain relationship and dislocation density vs. strain of bulk Fe pillars obtained by us are compared with the published results obtained by S. Queyreau, G. Monnet, and B. Devincre, International Journal of Plasticity 25, 361 (2009).http://dx.doi.org/10.1063/1.5000553 |
| spellingShingle | S. K. Deb Nath Mechanical properties of nano and bulk Fe pillars using molecular dynamics and dislocation dynamics simulation AIP Advances |
| title | Mechanical properties of nano and bulk Fe pillars using molecular dynamics and dislocation dynamics simulation |
| title_full | Mechanical properties of nano and bulk Fe pillars using molecular dynamics and dislocation dynamics simulation |
| title_fullStr | Mechanical properties of nano and bulk Fe pillars using molecular dynamics and dislocation dynamics simulation |
| title_full_unstemmed | Mechanical properties of nano and bulk Fe pillars using molecular dynamics and dislocation dynamics simulation |
| title_short | Mechanical properties of nano and bulk Fe pillars using molecular dynamics and dislocation dynamics simulation |
| title_sort | mechanical properties of nano and bulk fe pillars using molecular dynamics and dislocation dynamics simulation |
| url | http://dx.doi.org/10.1063/1.5000553 |
| work_keys_str_mv | AT skdebnath mechanicalpropertiesofnanoandbulkfepillarsusingmoleculardynamicsanddislocationdynamicssimulation |