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首页> 外文期刊>Materials Letters >Formation mechanism and application potential of ∑1 boundary in grain boundary engineering of high nitrogen austenitic stainless steel
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Formation mechanism and application potential of ∑1 boundary in grain boundary engineering of high nitrogen austenitic stainless steel

机译：高氮奥氏体不锈钢晶界工程中Σ1晶界的形成机理及应用潜力

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摘要

Sigma 3 boundaries improve the intergranular corrosion resistance of high nitrogen austenitic stainless steels. However, the regeneration of these boundaries is, unfortunately, accompanied by significant grain coarsening. 18Mn18Cr0.5N and 18Mn18Cr0.6N steels were thermo-mechanically processed and the corresponding microstructures were evaluated. Formation mechanisms were proposed for Sigma 1 boundaries in different R-Sigma 3-Sigma 1 -type junctions. These boundaries formed during grain growth accompanying Sigma 3 formation and reaction. After 30% cold tension and cyclic heating between 500 degrees C and 1100 degrees C, numerous Sigma 1 boundaries were formed and disrupted the high angle grain boundary network efficiently. Moreover, a small grain size was maintained. Sigma 1 boundaries have significant application potential in grain boundary engineering. (C) 2019 Elsevier B.V. All rights reserved.
机译：Sigma 3边界改善了高氮奥氏体不锈钢的抗晶间腐蚀性。然而，不幸的是，这些边界的再生伴随着明显的晶粒粗化。对18Mn18Cr0.5N和18Mn18Cr0.6N钢进行热机械加工，并评估了相应的显微组织。对于不同的R-Sigma 3-Sigma 1型连接中的Sigma 1边界，提出了形成机理。这些边界在伴随Sigma 3的形成和反应的晶粒生长过程中形成。在30％的冷张力和500摄氏度至1100摄氏度之间的循环加热之后，形成了许多Sigma 1边界，并有效地破坏了高角度晶界网络。而且，保持了小的晶粒尺寸。 Sigma 1边界在晶界工程中具有重要的应用潜力。 （C）2019 Elsevier B.V.保留所有权利。

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  • 来源
    《Materials Letters》 |2019年第15期|377-380|共4页
  • 作者

    Wang Zhenhua; Liu Yi;

  • 作者单位

    Yanshan Univ Sch Mech Engn Qinhuangdao 066004 Hebei Peoples R China|Yanshan Univ State Key Lab Metastable Mat Sci & Technol Qinhuangdao 066004 Hebei Peoples R China|HBIS Grp Technol Res Inst Shijiazhuang 050023 Hebei Peoples R China;

    HBIS Grp Technol Res Inst Shijiazhuang 050023 Hebei Peoples R China;

  • 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
  • 中图分类
  • 关键词

    Metals and alloys; Microstructure; Grain boundaries;

    机译：金属和合金;微观结构晶界;

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