Cooperative toughening mechanism of nanocrystalline materials by grain rotation and shear-coupled migration of grain boundaries

Jianjun Li; Shaohua Chen

doi:10.1016/j.matlet.2014.01.164

Cooperative toughening mechanism of nanocrystalline materials by grain rotation and shear-coupled migration of grain boundaries

Jianjun Li^*
, Shaohua Chen

^*此作品的通讯作者

Northwestern Polytechnical University Xian
Chinese Academy of Sciences

科研成果: 期刊稿件 › 文章 › 同行评审

7 引用（Scopus）

摘要

A theoretical model is proposed to illustrate the cooperative effect of nano-grain rotation and shear-coupled migration of grain boundaries on toughening of nanocrystalline materials. The toughening mechanism is embodied by an effective stress intensity factor near the tip of a mode I crack. The result shows a possibly effective toughening mechanism in nanocrystalline materials.

源语言	英语
页（从-至）	174-176
页数	3
期刊	Materials Letters
卷	121
DOI	https://doi.org/10.1016/j.matlet.2014.01.164
出版状态	已出版 - 15 4月 2014
已对外发布	是

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abstract = "A theoretical model is proposed to illustrate the cooperative effect of nano-grain rotation and shear-coupled migration of grain boundaries on toughening of nanocrystalline materials. The toughening mechanism is embodied by an effective stress intensity factor near the tip of a mode I crack. The result shows a possibly effective toughening mechanism in nanocrystalline materials.",

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N2 - A theoretical model is proposed to illustrate the cooperative effect of nano-grain rotation and shear-coupled migration of grain boundaries on toughening of nanocrystalline materials. The toughening mechanism is embodied by an effective stress intensity factor near the tip of a mode I crack. The result shows a possibly effective toughening mechanism in nanocrystalline materials.

AB - A theoretical model is proposed to illustrate the cooperative effect of nano-grain rotation and shear-coupled migration of grain boundaries on toughening of nanocrystalline materials. The toughening mechanism is embodied by an effective stress intensity factor near the tip of a mode I crack. The result shows a possibly effective toughening mechanism in nanocrystalline materials.

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KW - Nanocrystalline materials

KW - Shear-coupled migration of grain boundaries

KW - Simulation and modeling

KW - Stress intensity factor

KW - Toughening mechanism

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Cooperative toughening mechanism of nanocrystalline materials by grain rotation and shear-coupled migration of grain boundaries

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