Solid solution strengthening and softening due to collective nanocrystalline deformation physics

SCRIPTA MATERIALIA

卷:81

Article

Rupert, Timothy J.

关键词: Nanocrystalline materials;    Mechanical properties;    Molecular dynamics (MD);    Plastic deformation;    Solid solution strengthening;   

DOI  :  10.1016/j.scriptamat.2014.03.006

来源: Elsevier

【 摘 要 】

Solid solution effects on the strength of the finest nanocrystalline grain sizes are studied with molecular dynamics simulations of different Cu-based alloys. We find evidence of both solid solution strengthening and softening, with trends in strength controlled by how alloying affects the elastic modulus of the material. This behavior is consistent with a shift to collective grain boundary deformation physics, and provides a link between the mechanical behavior of very fine-grained nanocrystalline metals and metallic glasses. (C) 2014 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.

【 授权许可】

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