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首页> 外文期刊>Materials Science and Engineering >Numerical analysis on the local mechanical fields in poly crystalline 316LN stainless steel under cyclic fatigue loading: Comparison with experimental results
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Numerical analysis on the local mechanical fields in poly crystalline 316LN stainless steel under cyclic fatigue loading: Comparison with experimental results

机译：循环疲劳载荷下多晶316LN不锈钢局部力学场的数值分析：与实验结果的比较

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摘要

The present paper is devoted to the study of the parameters responsible for the initiation and/or propagation of transgranular microcracks in polycrystalline materials. The investigation is carried out on an aggregate made of 316LN stainless steel which 3D grain shape and orientation were reconstructed using 2D serial Electron BackScattered Diffraction scans. The evaluation and the analysis of the local mechanical fields at the free surface of the polycrystalline aggregate subjected to cycling loading are performed using Finite Element Crystal Plasticity. Two crystal plasticity models are used and compared through Finite Element computations: quasi-physical or phenomenological models. The local parameters which possibly drive crack initiation are analysed and then compared to the experimental observations. A new criterion predicting whether a specific grain is likely to present a fatigue crack initiation is finally proposed.
机译：本文致力于研究多晶材料中跨晶微裂纹的引发和/或传播的参数。对由316LN不锈钢制成的骨料进行了研究，该骨料使用2D系列电子背散射衍射扫描重建了3D晶粒形状和取向。使用有限元晶体可塑性对经受循环载荷的多晶聚集体的自由表面处的局部机械场进行评估和分析。使用了两种晶体可塑性模型，并通过有限元计算进行了比较：准物理模型或现象学模型。分析可能导致裂纹萌生的局部参数，然后将其与实验结果进行比较。最终提出了一种新的标准，该标准可预测特定晶粒是否可能出现疲劳裂纹萌生。

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  • 来源
    《Materials Science and Engineering》 |2017年第1期|122-136|共15页
  • 作者

    S. Basseville; G. Cailletaud; T. Ghidossi; Y. Guilhem; E. Lacoste; H. Proudhon; L. Signor; P. Villechaise;

  • 作者单位

    Universite de Versailles-Saint-Quentin-en-Yvelines, 45 avenue des Etats-Unis, 78035 Versailles cedex, France,MINES ParisTech, PSL Research University, Centre des Materiaux, CNRS UMR 7633, BP 87, 91003 Evry Cedex, France;

    MINES ParisTech, PSL Research University, Centre des Materiaux, CNRS UMR 7633, BP 87, 91003 Evry Cedex, France;

    Institut P', CNRS UPR 3346, ISAE-ENSMA, Universite de Poitiers, 11 boulevard Marie et Pierre Curie, BP 30179 86962 Futuroscope Chasseneuil, France;

    Laboratoire de Micanique et Technologic (LMT), ENS Paris-Saclay/CNRS/Universiti Paris-Saclay, 61 Avenue du President Wilson, 94235 Cachan Cedex, France;

    Institut P', CNRS UPR 3346, ISAE-ENSMA, Universite de Poitiers, 11 boulevard Marie et Pierre Curie, BP 30179 86962 Futuroscope Chasseneuil, France;

    MINES ParisTech, PSL Research University, Centre des Materiaux, CNRS UMR 7633, BP 87, 91003 Evry Cedex, France;

    Institut P', CNRS UPR 3346, ISAE-ENSMA, Universite de Poitiers, 11 boulevard Marie et Pierre Curie, BP 30179 86962 Futuroscope Chasseneuil, France;

    Institut P', CNRS UPR 3346, ISAE-ENSMA, Universite de Poitiers, 11 boulevard Marie et Pierre Curie, BP 30179 86962 Futuroscope Chasseneuil, France;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Polycrystal; 316LN Steel; Crystal plasticity; Finite element; Fatigue;

    机译：多晶316LN钢;晶体可塑性;有限元;疲劳;

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