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    Mechanism of the superior mechanical strength of nanometer-sized metal single crystals revealed

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    Type
    Article
    Authors
    Afify, N. D.
    Salem, H. G.
    Yavari, A.
    El Sayed, Tamer S.
    KAUST Department
    Computer, Electrical and Mathematical Sciences and Engineering (CEMSE) Division
    Physical Science and Engineering (PSE) Division
    Date
    2013-10
    Permanent link to this record
    http://hdl.handle.net/10754/594101
    
    Metadata
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    Abstract
    Clear understanding of the superior mechanical strength of nanometer-sized metal single crystals is required to derive advanced mechanical components retaining such superiority. Although high quality studies have been reported on nano-crystalline metals, the superiority of small single crystals has neither been fundamentally explained nor quantified to this date. Here we present a molecular dynamics study of aluminum single crystals in the size range from 4.1 nm to 40.5 nm. We show that the ultimate mechanical strength deteriorates exponentially as the single crystal size increases. The small crystals superiority is explained by their ability to continuously form vacancies and to recover them. © 2013 Published by Elsevier B.V.
    Citation
    Afify ND, Salem HG, Yavari A, El Sayed T (2013) Mechanism of the superior mechanical strength of nanometer-sized metal single crystals revealed. Computational Materials Science 78: 34–38. Available: http://dx.doi.org/10.1016/j.commatsci.2013.05.011.
    Publisher
    Elsevier BV
    Journal
    Computational Materials Science
    DOI
    10.1016/j.commatsci.2013.05.011
    ae974a485f413a2113503eed53cd6c53
    10.1016/j.commatsci.2013.05.011
    Scopus Count
    Collections
    Articles; Physical Science and Engineering (PSE) Division; Computer, Electrical and Mathematical Sciences and Engineering (CEMSE) Division

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