Atomic simulations of deformation mechanisms of crystalline Mg/amorphous Mg-Al nanocomposites

H. Y. Song; Y. L. Li

doi:10.1016/j.physleta.2015.06.038

Atomic simulations of deformation mechanisms of crystalline Mg/amorphous Mg-Al nanocomposites

H. Y. Song, Y. L. Li

School of Civil Aviation

Xi'an Shiyou University

Research output: Contribution to journal › Article › peer-review

44 Scopus citations

Abstract

Abstract The effects of amorphous boundary (AB) spacing on the deformation behavior of crystalline/amorphous (C/A) Mg/MgAl nanocomposites under tensile load are investigated using molecular dynamics method. The results show that the plasticity of nano-polycrystal Mg can be enhanced with the introduction of C/A interfaces. For samples 5.2 nm in AB spacing and larger, the superior tensile ductility and nearly perfect plastic flow behavior occur during plastic deformation. The studies indicate that the cooperative interactions between crystalline and amorphous are the main reason for excellent ductility enhancements in C/A Mg/MgAl nanocomposites.

Original language	English
Article number	23288
Pages (from-to)	2087-2091
Number of pages	5
Journal	Physics Letters, Section A: General, Atomic and Solid State Physics
Volume	379
Issue number	36
DOIs	https://doi.org/10.1016/j.physleta.2015.06.038
State	Published - 14 Jul 2015

Keywords

Crystalline/amorphous nanocomposites
Deformation behavior
Ductility
Molecular dynamics simulation

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10.1016/j.physleta.2015.06.038

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abstract = "Abstract The effects of amorphous boundary (AB) spacing on the deformation behavior of crystalline/amorphous (C/A) Mg/MgAl nanocomposites under tensile load are investigated using molecular dynamics method. The results show that the plasticity of nano-polycrystal Mg can be enhanced with the introduction of C/A interfaces. For samples 5.2 nm in AB spacing and larger, the superior tensile ductility and nearly perfect plastic flow behavior occur during plastic deformation. The studies indicate that the cooperative interactions between crystalline and amorphous are the main reason for excellent ductility enhancements in C/A Mg/MgAl nanocomposites.",

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T1 - Atomic simulations of deformation mechanisms of crystalline Mg/amorphous Mg-Al nanocomposites

AU - Song, H. Y.

AU - Li, Y. L.

PY - 2015/7/14

Y1 - 2015/7/14

N2 - Abstract The effects of amorphous boundary (AB) spacing on the deformation behavior of crystalline/amorphous (C/A) Mg/MgAl nanocomposites under tensile load are investigated using molecular dynamics method. The results show that the plasticity of nano-polycrystal Mg can be enhanced with the introduction of C/A interfaces. For samples 5.2 nm in AB spacing and larger, the superior tensile ductility and nearly perfect plastic flow behavior occur during plastic deformation. The studies indicate that the cooperative interactions between crystalline and amorphous are the main reason for excellent ductility enhancements in C/A Mg/MgAl nanocomposites.

AB - Abstract The effects of amorphous boundary (AB) spacing on the deformation behavior of crystalline/amorphous (C/A) Mg/MgAl nanocomposites under tensile load are investigated using molecular dynamics method. The results show that the plasticity of nano-polycrystal Mg can be enhanced with the introduction of C/A interfaces. For samples 5.2 nm in AB spacing and larger, the superior tensile ductility and nearly perfect plastic flow behavior occur during plastic deformation. The studies indicate that the cooperative interactions between crystalline and amorphous are the main reason for excellent ductility enhancements in C/A Mg/MgAl nanocomposites.

KW - Crystalline/amorphous nanocomposites

KW - Deformation behavior

KW - Ductility

KW - Molecular dynamics simulation

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M3 - 文章

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SN - 0375-9601

VL - 379

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JO - Physics Letters, Section A: General, Atomic and Solid State Physics

JF - Physics Letters, Section A: General, Atomic and Solid State Physics

IS - 36

M1 - 23288

ER -

Atomic simulations of deformation mechanisms of crystalline Mg/amorphous Mg-Al nanocomposites

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