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Hierarchical amorphous structures in a Zr_(50)Cu_(42)Al_8 bulk metallic glass

机译:Zr_(50)Cu_(42)Al_8块状金属玻璃中的分层非晶结构

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摘要

The mechanism for the room-temperature plasticity of bulk metallic glasses (BMGs), in most cases adopting the microscopic point of view, has been extensively studied. However, less attention has been paid to the macro-structural heterogeneity of BMGs. In this work, a hierarchical amorphous structure, from the full amorphous surface to the phase-separated central region, has been observed in a Zr_(50)Cu_(42)Al_8 glassy rod, displaying excellent room-temperature plasticity under compression. The formation mechanism for the hierarchical structure and its effect on the deformation behavior of the glassy rod have also been investigated.
机译:在大多数情况下,从微观的角度出发,对块状金属玻璃(BMG)室温可塑性的机理进行了广泛的研究。然而,很少有人关注BMG的宏观结构异质性。在这项工作中,已经在Zr_(50)Cu_(42)Al_8玻璃棒中观察到从完全非晶表面到相分离的中心区域的分层非晶结构,在压缩下表现出出色的室温可塑性。还研究了分层结构的形成机理及其对玻璃棒变形行为的影响。

著录项

  • 来源
    《Materials Science and Engineering》 |2015年第15期|75-79|共5页
  • 作者单位

    Laboratory for Microstructure & Institute of Materials, Shanghai University, Shanghai 200072, China,Department of Industrial and Systems Engineering, The Hong Kong Polytechnic University, Hung Hom, Hong Kong;

    Laboratory for Microstructure & Institute of Materials, Shanghai University, Shanghai 200072, China;

    Chongqing Key Laboratory of Photo-Electric Functional Materials, College of Physics and Electronic Engineering, Chongqing Normal University, Chongqing 400047, China;

    Laboratory for Microstructure & Institute of Materials, Shanghai University, Shanghai 200072, China;

    Laboratory for Microstructure & Institute of Materials, Shanghai University, Shanghai 200072, China;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Bulk metallic glass; Hierarchical structure; Inhomogeneous deformation; Room-temperature plasticity;

    机译:大块金属玻璃;层次结构;不均匀变形;室温可塑性;

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