Mechanical properties of nano-grained Zr2Ni systems by molecular dynamics simulations
| dc.contributor.author | Evangelakis, G. A. | en |
| dc.contributor.author | Papageorgiou, D. G. | en |
| dc.contributor.author | Lekka, C. E. | en |
| dc.contributor.author | Lagaris, I. E. | en |
| dc.date.accessioned | 2015-11-24T17:35:46Z | |
| dc.date.available | 2015-11-24T17:35:46Z | |
| dc.identifier.issn | 0925-8388 | - |
| dc.identifier.uri | https://olympias.lib.uoi.gr/jspui/handle/123456789/14171 | |
| dc.rights | Default Licence | - |
| dc.subject | nano-structured materials | en |
| dc.subject | atomic scale structure | en |
| dc.subject | molecular dynamics simulations | en |
| dc.subject | nanocrystalline materials | en |
| dc.subject | deformation | en |
| dc.subject | alloys | en |
| dc.subject | ni | en |
| dc.subject | behavior | en |
| dc.subject | creep | en |
| dc.subject | model | en |
| dc.subject | al | en |
| dc.title | Mechanical properties of nano-grained Zr2Ni systems by molecular dynamics simulations | en |
| heal.abstract | We present molecular dynamics simulation based. on a semi-empirical potential model in analogy to the tight binding scheme in the second moment approximation on the mechanical properties of Zr2Ni systems formed by different nano-sized grains, having sizes from 2.5 to 4.5 run. The systems were initially equilibrated at T=650 K and the structures of the nano-particles were identified using Common Neighbor Analysis. We calculated Poisson ratio, stress-strain curves, yield strength and Young modulus. Since in the present model case, grains smaller than 3.7 nm do not affect the system's mechanical response, we deduce that only larger size of grains appears to be important for the mechanical response of the systems. Deformation of the grains is not homogeneous and micro-cracking occurs in grains with orientation along the strain direction leading to their amorphization. This new effect for the deformation accommodation happens when the plastic region is reached and it seems to play important role in the ductility of the system. (C) 2006 Elsevier B.V. All rights reserved. | en |
| heal.access | campus | - |
| heal.fullTextAvailability | TRUE | - |
| heal.identifier.primary | DOI 10.1016/j.jallcom.2006.08.237 | - |
| heal.identifier.secondary | <Go to ISI>://000246286900137 | - |
| heal.journalName | Journal of Alloys and Compounds | en |
| heal.journalType | peer reviewed | - |
| heal.language | en | - |
| heal.publicationDate | 2007 | - |
| heal.publisher | Elsevier | en |
| heal.recordProvider | Πανεπιστήμιο Ιωαννίνων. Σχολή Θετικών Επιστημών. Τμήμα Μηχανικών Επιστήμης Υλικών | el |
| heal.type | journalArticle | - |
| heal.type.el | Άρθρο Περιοδικού | el |
| heal.type.en | Journal article | en |
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