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Chelyabinskiy Fiziko-Matematicheskiy Zhurnal, 2018, Volume 3, Issue 2, Pages 193–201
DOI: https://doi.org/10.24411/2500-0101-2018-13205
(Mi chfmj98)
 

This article is cited in 1 scientific paper (total in 1 paper)

Mechanics

Molecular-dynamic study of the size effect in the compacting of monodisperse aluminum nanopowder

A. E. Mayera, M. Kh. A. Al-Sandoqachib

a Chelyabinsk State University, Chelyabinsk, Russia
b South Ural State University (National Research University), Chelyabinsk, Russia
References:
Abstract: With the help of molecular dynamics simulation, the influence of the dimensions of aluminum particles in the range of 6–24 nm on the dynamics of nanopowder compacting under deformation of the system with constant rate of 1/ns. It is shown that an increase in nanoparticle sizes from 6 to 12 nm leads to a drop in the yield strength of the nanopowder from 0.4 to 0.3 GPa, and a further increase in the size of the nanoparticles does not affect the yield strength. The density of the system at zero pressure, determined by the adhesion forces, decreases with increasing nanoparticle sizes from 6 to 12 nm, and then does not change. When the nanopowder is compressed, the main increase in density occurs with a pressure increase of up to 1–2 GPa, and complete collapse of the voids takes place as the pressure increases to 5.5 GPa. Increasing the size of nanoparticles leads to a slowing down of the compaction process.
Keywords: nanopowder, compacting, size effect, molecular dynamics simulation.
Funding agency Grant number
Ministry of Education and Science of the Russian Federation 3.2510.2017/ПЧ
Received: 30.03.2018
Revised: 05.05.2018
Document Type: Article
UDC: 539.3
Language: Russian
Citation: A. E. Mayer, M. Kh. A. Al-Sandoqachi, “Molecular-dynamic study of the size effect in the compacting of monodisperse aluminum nanopowder”, Chelyab. Fiz.-Mat. Zh., 3:2 (2018), 193–201
Citation in format AMSBIB
\Bibitem{MayAl-18}
\by A.~E.~Mayer, M.~Kh.~A.~Al-Sandoqachi
\paper Molecular-dynamic study of the size effect in the compacting of monodisperse aluminum nanopowder
\jour Chelyab. Fiz.-Mat. Zh.
\yr 2018
\vol 3
\issue 2
\pages 193--201
\mathnet{http://mi.mathnet.ru/chfmj98}
\crossref{https://doi.org/10.24411/2500-0101-2018-13205}
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  • This publication is cited in the following 1 articles:
    Citing articles in Google Scholar: Russian citations, English citations
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    Chelyabinskiy Fiziko-Matematicheskiy Zhurnal
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