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Short-range ordering of heavy-element columns in nickel-based superalloys

机译:镍基超合金中重型柱的短程排序

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摘要

In order to obtain comprehensive performance, heavy elements were added into superalloys for solid-solution hardening. It is found that, rather than adopting random distributions, the heavy atoms prefer to form short-range ordered columns with heavy-element stripes 1-2nm in length. This is supported by our ab initio calculations. Owing to the strong bonding strength between the refractory elements and nickel atoms, this short-range ordering may be beneficial to the mechanical performances of superalloys.
机译:为了获得综合性能,将重量的元素加入超合金中,用于固溶硬化。 发现,而不是采用随机分布,重量原子较倾向于形成具有长元素条约1-2nm的短距离有序柱。 这是我们的AB Initio Calculation的支持。 由于耐火元件和镍原子之间的强粘合强度,这种短距离排序可能有利于高温合金的机械性能。

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  • 来源
    《Philosophical Magazine Letters》 |2016年第12期|共8页
  • 作者单位

    Beijing Inst Aeronaut Mat Natl Key Lab Sci &

    Technol Adv High Temp Struct M Beijing Peoples R China;

    Beijing Inst Aeronaut Mat Natl Key Lab Sci &

    Technol Adv High Temp Struct M Beijing Peoples R China;

    Chinese Acad Sci Beijing Natl Lab Condensed Matter Phys Inst Phys Beijing Peoples R China;

    Chinese Acad Sci Beijing Natl Lab Condensed Matter Phys Inst Phys Beijing Peoples R China;

    Beijing Inst Technol Sch Phys Beijing Peoples R China;

    Shandong Univ Inst Crystal Mat Natl Key Lab Crystal Mat Jinan Peoples R China;

    Shandong Univ Dept Mat Sci &

    Engn Jinan Peoples R China;

    Tsinghua Univ Beijing Natl Ctr Electron Microscopy Dept Mat Sci &

    Engn Adv Mat Lab Beijing Peoples R China;

  • 收录信息
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 物理学;
  • 关键词

    Superalloy; short-range ordering; HAADF; heavy element;

    机译:超合金;短程排序;HAADF;重点;

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