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首页> 外文期刊>Journal of Alloys and Compounds: An Interdisciplinary Journal of Materials Science and Solid-state Chemistry and Physics >Voronoi volume recovery during plastic deformation in deep-notched metallic glasses
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Voronoi volume recovery during plastic deformation in deep-notched metallic glasses

机译：深入金属眼镜塑性变形期间Voronoi体积恢复

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摘要

Many previous simulations of the plastic deformation in metallic glasses showed that shear banding is the dominant mode accompanied by Voronoi volume continuous generation and softening. In the present work, we report a contrary phenomenon where Voronoi volume recovery is dominant during plastic deformation in CuZr metallic glasses under tension. By creating a notched geometry, the deformation mode of notched samples transits from shear banding to necking due to the introduction of triaxial stress state. With the suppressing of shear banding, a notch strengthening and structure ordering phenomenon together with the recovery of Cu-centered full-icosahedra fraction are also observed. The present work enriches our understanding on the mechanical behavior and deformation mechanism of metallic glasses. (C) 2018 Elsevier B.V. All rights reserved.
机译：许多先前的金属玻璃塑性变形模拟显示，剪切绑带是伴随着Voronoi体积连续产生和软化的主导模式。 在目前的工作中，我们报告了一个相反的现象，其中Voronoi体积恢复在张力下Cuzr金属玻璃中的塑性变形期间占主导地位。 通过创建凹口几何形状，由于引入三轴应力状态，缺口样品的变形模式从剪切带传递到颈动。 随着抑制剪切扎带，还观察到凹口强化和结构排序现象与富含Cu居中的全ICOSaHEDRA部分的回收率。 目前的工作丰富了我们对金属眼镜的力学行为和变形机制的理解。 （c）2018年elestvier b.v.保留所有权利。

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