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dc.contributor.authorAfify, N. D.
dc.contributor.authorSalem, H. G.
dc.contributor.authorYavari, A.
dc.contributor.authorEl Sayed, Tamer S.
dc.date.accessioned2016-01-19T13:21:51Z
dc.date.available2016-01-19T13:21:51Z
dc.date.issued2014-04
dc.identifier.citationAfify ND, Salem HG, Yavari A, El Sayed T (2014) Consolidation of nanometer-sized aluminum single crystals: Microstructure and defects evolutions. Computational Materials Science 85: 306–309. Available: http://dx.doi.org/10.1016/j.commatsci.2013.11.027.
dc.identifier.issn0927-0256
dc.identifier.doi10.1016/j.commatsci.2013.11.027
dc.identifier.urihttp://hdl.handle.net/10754/594109
dc.description.abstractDeriving bulk materials with ultra-high mechanical strength from nanometer-sized single metalic crystals depends on the consolidation procedure. We present an accurate molecular dynamics study to quantify microstructure responses to consolidation. Aluminum single crystals with an average size up to 10.7 nm were hydrostatically compressed at temperatures up to 900 K and pressures up to 5 GPa. The consolidated material developed an average grain size that grew exponentially with the consolidation temperature, with a growth rate dependent on the starting average grain size and the consolidation pressure. The evolution of the microstructure was accompanied by a significant reduction in the concentration of defects. The ratio of vacancies to dislocation cores decreased with the average grain size and then increased after reaching a critical average grain size. The deformation mechanisms of poly-crystalline metals can be better understood in the light of the current findings. © 2013 Elsevier B.V. All rights reserved.
dc.publisherElsevier BV
dc.subjectConsolidation
dc.subjectMolecular dynamics simulation
dc.subjectNano-crystalline metals
dc.subjectVoronoi tessellation
dc.titleConsolidation of nanometer-sized aluminum single crystals: Microstructure and defects evolutions
dc.typeArticle
dc.contributor.departmentComputer, Electrical and Mathematical Sciences and Engineering (CEMSE) Division
dc.contributor.departmentPhysical Science and Engineering (PSE) Division
dc.identifier.journalComputational Materials Science
dc.contributor.institutionEgypt Nanotechnology Research Center, El-Sheikh Zayed City, Giza, Egypt
dc.contributor.institutionDepartment of Mechanical Engineering, Yousef Jameel Science and Technology Research Center, American University in Cairo, AUC Avenue, New Cairo 11835, Egypt
dc.contributor.institutionSchool of Civil and Environmental Engineering, Georgia Institute of Technology, Atlanta, GA 30332, United States
kaust.personEl Sayed, Tamer S.


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