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Application of small-scale testing for investigation of ion-beam-irradiated materials

机译：小规模测试在离子束辐照材料研究中的应用

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摘要

Small-scale testing techniques such as nanoindentation and microanocompression are promising methods for addressing mechanical properties of ion-beam-irradiated materials. We performed different proton irradiations and critically evaluated the results obtained from nanoindentation and pillar compression, both performed parallel and perpendicular to the irradiation direction. Experiments parallel to beam direction suffer from variation of material properties with penetration depth. This is improved by cross-sectional experiments, thereby probing the effect of different doses along the beam penetration depth on mechanical properties. Finally, we demonstrate that, compared with nanoindentation, miniaturized uniaxial compression experiments offer a more reliable and straightforward interpretation of the mechanical data, as they impose a nominally uniaxial stress on a well-defined volume at a specific position. Moreover, the exposed pillar geometry is not influenced by surface contamination and enables in situ observation of the governing mechanical processes, which is typically not possible during indentation experiments in a half-space geometry.
机译：诸如纳米压痕和微/纳米压缩之类的小规模测试技术是解决离子束辐照材料机械性能的有前途的方法。我们执行了不同的质子辐照，并严格评估了从纳米压痕和柱压缩获得的结果，这些结果均平行于或垂直于辐照方向进行。平行于光束方向的实验会受到材料特性随穿透深度的变化的影响。通过横截面实验可以改善这一点，从而探究不同剂量沿光束穿透深度对机械性能的影响。最后，我们证明，与纳米压痕相比，小型化的单轴压缩实验提供了对机械数据的更可靠，更直接的解释，因为它们在特定位置的明确定义的体积上施加了名义上的单轴应力。此外，裸露的柱子几何形状不受表面污染的影响，并能够对控制的机械过程进行原位观察，这在半空间几何形状的压痕实验中通常是不可能的。

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  • 来源
    《Journal of Materials Research》 |2012年第21期|2724-2736|共13页
  • 作者

    Daniel Kiener; Andrew M. Minor; Osman Anderoglu; Yongqiang Wang; Stuart A. Maloy; Peter Hosemann;

  • 作者单位

    Department of Materials Physics, Montanuniversitat Leoben, 8700 Leoben, Austria Department of Materials Science, University of California Berkeley, Berkeley, California 94720;

    Department of Materials Science, University of California Berkeley, Berkeley, California 94720 National Center for Electron Microscopy, Lawrence Berkeley National Laboratory, Berkeley, California 94720;

    Los Alamos National Laboratory, Materials Science and Technology Division, Los Alamos, New Mexico 87545;

    Los Alamos National Laboratory, Materials Science and Technology Division, Los Alamos, New Mexico 87545;

    Los Alamos National Laboratory, Materials Science and Technology Division, Los Alamos, New Mexico 87545;

    Department of Nuclear Engineering, University of California Berkeley, Berkeley, California 94720;

  • 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);
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  • 正文语种 eng
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