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Local residual stress measurements on nitride layers

机译：氮化物层上的局部残余应力测量

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摘要

In this work, local stresses in different nitrided maraging steel samples of high practical interest for industrial applications were studied through the so-called micro-slit milling method using a focused ion beam. The nitrogen concentration profiles were acquired by glow discharge optical emission spectro-scopy. The residual stress state was measured on the surface and also in cross-section, i.e. examining effects of the nitrogen concentration gradient. It is shown that an enhanced lateral resolution can be achieved when a novel multiple fitting approach is employed. The results presented show an overall agreement with stress profiles obtained by X-ray diffraction. Finite Element Modeling is used to explain the apparent discrepancies. A clear correlation between the residual stress and nitriding profiles has been found and the applicability of this method is shown in particular when stress gradients are present.
机译：在这项工作中，通过使用聚焦离子束的所谓的微缝铣削方法，研究了在工业上具有很高实用价值的不同渗氮马氏体时效钢样品中的局部应力。通过辉光放电光发射光谱法获得氮浓度分布。在表面和横截面上测量残余应力状态，即检查氮气浓度梯度的影响。结果表明，采用新颖的多重拟合方法可以提高横向分辨率。给出的结果表明与通过X射线衍射获得的应力曲线总体吻合。有限元建模用于解释明显的差异。已经发现残余应力和渗氮曲线之间存在明显的相关性，并且特别是在存在应力梯度时，显示了该方法的适用性。

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  • 来源
    《Materials Science and Engineering》 |2015年第11期|476-483|共8页
  • 作者

    C. Mansilla; V. Ocelik; J.Th.M. De Hosson;

  • 作者单位

    Materials Innovation Institute M2i, Department of Applied Physics, University of Groningen, Nijenborgh 4, Groningen 9474 AG, The Netherlands;

    Materials Innovation Institute M2i, Department of Applied Physics, University of Groningen, Nijenborgh 4, Groningen 9474 AG, The Netherlands;

    Materials Innovation Institute M2i, Department of Applied Physics, University of Groningen, Nijenborgh 4, Groningen 9474 AG, The Netherlands;

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  • 原文格式 PDF
  • 正文语种 eng
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  • 关键词

    Nitriding; Residual stress; Slit method; Focused ion beam; Gradient;

    机译：渗氮残余应力;狭缝法聚焦离子束;梯度;

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