Softening Effect on Elastic Moduli of Fe, Nb, Cu, and RuAl Nanoparticles.
J Nanosci Nanotechnol
; 19(12): 7899-7905, 2019 Dec 01.
Article
en En
| MEDLINE
| ID: mdl-31196306
ABSTRACT
Using the embedded-atom method, the elastic moduli as a function of the size of Fe, Nb, Cu and RuAl nanoparticles were investigated. By decreasing particle size, a decrease in moduli was observed, and the softening of the modulus correlated with the inverse Hall-Petch relation. This softening mechanism of a nanomaterial might be attributable to easy movement of the internal/surface dislocations of a grain at a low shear modulus. The effect of size on the physical properties of the nanoparticles (>5.0 nm) was found to be smaller than those of the particles (<5.0 nm). It was concluded that nanograins larger than 5 nm have elastic moduli to be approximately equal to ones of their bulk counterpart.
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1
Colección:
01-internacional
Base de datos:
MEDLINE
Idioma:
En
Revista:
J Nanosci Nanotechnol
Año:
2019
Tipo del documento:
Article
País de afiliación:
China