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Effects of sample geometry on deformation modes of bulk metallic glasses at the nano/micrometer scale

机译：样品几何形状对大块金属玻璃在纳米/微米尺度下变形模式的影响

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摘要

Intense debates have been prompted concerning whether homogeneous deformation can be achieved in bulk metallic glasses at room temperature through the suppression of shear bands at the submicron scale. In this short communication, we demonstrate that multiple shear banding can be successfully attained via a proper modification of the microsample geometry, resulting in the appearance of a homogeneous deformation mode at the submicron scale. However, the apparent deformation homogeneity in our microcompression experiment is a manifestation of the sample geometry effect on the propagation rather than nucleation of shear bands.
机译：关于是否可以通过抑制亚微米级的剪切带，在室温下在块状金属玻璃中实现均质变形的激烈争论已经引发。在这种简短的交流中，我们证明可以通过适当修改微量样品的几何形状来成功获得多个剪切带，从而在亚微米级出现均质变形模式。但是，在我们的微压缩实验中，明显的变形均匀性是样品几何形状对剪切带传播而不是成核剪切带的一种体现。

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  • 来源
    《Journal of Materials Research》 |2009年第11期|3465-3468|共4页
  • 作者

    Jianchao Ye; Jian Lu; Yong Yang; Peter K. Liaw;

  • 作者单位

    The Department of Mechanical Engineering, the Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong, People' s Republic of China;

    The Department of Mechanical Engineering, the Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong, People' s Republic of China;

    The Department of Mechanical Engineering, the Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong, People' s Republic of China;

    The Department of Materials Science and Engineering, The University of Tennessee, Knoxville, Tennessee 37996-2200;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);
  • 原文格式 PDF
  • 正文语种 eng
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