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Low absorbed energy ductile dimple fracture in lower shelf region in an ultrafine grained ferrite/cementite steel

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Abstract

The curve of absorbed energyvs test temperature for an ultrafine grained ferrite/cementite steel showed a transition from an upper shelf energy to a lower shelf energy,i.e., a transition from an energy-absorbent ductile mode to an energy-absorbent brittle mode. Some dense and small-sized dimples were observed in the lower shelf region. A significant and consistent difference existed between ductile-to-brittle transition temperature and impact energy transition temperature, that is, low absorbed energy but undergoing a ductile dimple fracture at a certain low temperature.

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Author notes

  1. Ming-Chun Zhao (Postdoctoral Fellow, Researcher)

    Present address: Steel Research Center, National Institute for Materials Science, Tsukuba, Japan

Authors and Affiliations

  1. the Institute for Structural Materials, Central Iron and Steel Research Institute, Beijing, People’s Republic of China

    Ming-Chun Zhao (Postdoctoral Fellow, Researcher)

  2. Steel Research Center, National Institute for Materials Science, Tsukuba, Japan

    Toshihiro Hanamura (Senior Researcher), Hai Qiu (Senior Researcher), Fuxing Yin (Senior Researcher) & Kotobu Nagai (Director)

  3. the Institute for Structural Materials, Central Iron and Steel Research Institute, Beijing, People’s Republic of China

    Han Dong (Professor and Director)

  4. the Institute of Metal Research, Chinese Academy of Sciences, Shenyang, People’s Republic of China

    Ke Yang (Professor)

Authors
  1. Ming-Chun Zhao
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  2. Toshihiro Hanamura
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  3. Hai Qiu
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  4. Fuxing Yin
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  5. Kotobu Nagai
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  6. Han Dong
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  7. Ke Yang
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Zhao, MC., Hanamura, T., Qiu, H. et al. Low absorbed energy ductile dimple fracture in lower shelf region in an ultrafine grained ferrite/cementite steel. Metall Mater Trans A 37, 2897–2900 (2006). https://doi.org/10.1007/BF02586122

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  • DOI: https://doi.org/10.1007/BF02586122

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