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Fatigue Behavior in an Fe-N Binary Ferritic Steel: Similarity and Difference between Carbon and Nitrogen

机译:Fe-N二元铁素体钢的疲劳行为:碳和氮之间的异同

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摘要

Fatigue crack initiation and propagation behavior of a water-quenched fully ferritic nitrogen steel were investigated by means of tension-compression fatigue tests. The Fe-0.011 mass% N steel showed no serrated flow associated with dynamic strain aging, and showed a fatigue limit of 150 MPa alongside a non-propagating fatigue crack. The major mode of crack initiation was at the grain boundaries, and the cracks propagated along the grain boundaries and interiors at and above the fatigue limit. The Fe-N steel did not exhibit a significant level of coaxing effect. The results were compared with our previous findings in Fe-0.006 and 0.017C steels, and the similarity and difference were discussed.
机译:通过拉伸压缩疲劳试验研究了水淬全铁素体氮钢的疲劳裂纹萌生和扩展行为。 Fe-0.011质量%N钢没有显示出与动态应变时效相关的锯齿状流动,并且显示了150 MPa的疲劳极限以及非传播的疲劳裂纹。裂纹萌生的主要方式是在晶界处,并且裂纹在疲劳极限以上达到了沿晶界和内部扩展。 Fe-N钢没有表现出明显的同轴作用。将结果与我们先前在Fe-0.006和0.017C钢中的发现进行了比较,并讨论了相似性和差异性。

著录项

  • 来源
    《ISIJ international》 |2019年第1期|186-191|共6页
  • 作者单位

    Faculty of Engineering, Kyushu University, 744 Motooka, Nishi-ku, Fukuoka, 819-0395 Japan;

    Faculty of Engineering, Kyushu University, 744 Motooka, Nishi-ku, Fukuoka, 819-0395 Japan;

    Nippon Steel & Sumitomo Metal Corporation, 5-3 Tokai, Tokai, Aichi, 476-8686 Japan;

    Nippon Steel & Sumitomo Metal Corporation, 20-1 Shintomi, Futtsu, Chiba, 293-8511 Japan;

    Nippon Steel & Sumitomo Metal Corporation, 1 Oaza-Nishinosu, Oita, Oita, 970-0922 Japan;

    Nippon Steel & Sumikin Research Institute Corporation, Kokusai Bldg., 3-1-1 Marunouchi, Chiyoda, Tokyo, 100-0005 Japan;

    Faculty of Engineering, Kyushu University, 744 Motooka, Nishi-ku, Fukuoka, 819-0395 Japan;

    Faculty of Engineering, Kyushu University, 744 Motooka, Nishi-ku, Fukuoka, 819-0395 Japan;

  • 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

    non-propagating fatigue crack; nitrogen steel; intergranular crack initiation; small fatigue crack;

    机译:非传播性疲劳裂纹;氮钢晶间裂纹萌生小疲劳裂纹;

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