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Effects of Molybdenum Addition on Hydrogen Desorption of TiC Precipitation-Hardened Steel

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Abstract

The hydrogen-trap states in TiC and MoC that have coherent interfaces with ferrite were investigated using first-principles calculation. The trapping sites of TiC were the interfaces and interstitial sites of ferrite. On the other hand, the trapping sites of MoC were ferrite interstitial sites; the interface had a negative binding energy with H. Thermal desorption analysis confirms that the amounts of diffusible hydrogen were significantly reduced by addition of Mo in Ti-bearing steel.

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Acknowledgements

This work was supported by the National Research Council of Science & Technology (NST) through Creative Agenda Project (CAP-11-5-KRISS).

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Authors and Affiliations

  1. Korea Research Institute of Standards and Science, Center for Energy Materials Metrology, Daejeon, 34113, Republic of Korea

    Eun Ju Song, Seung-Wook Baek & Seung Hoon Nahm

  2. Now at Sandia National Laboratories, Hydrogen and Materials Science, Livermore, CA, 94551, USA

    Eun Ju Song

  3. Graduate Institute of Ferrous Technology, Pohang University of Science and Technology, Pohang, 37673, Republic of Korea

    Dong-Woo Suh

Authors
  1. Eun Ju Song
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  2. Seung-Wook Baek
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  3. Seung Hoon Nahm
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Correspondence to Seung Hoon Nahm or Dong-Woo Suh.

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Song, E.J., Baek, SW., Nahm, S.H. et al. Effects of Molybdenum Addition on Hydrogen Desorption of TiC Precipitation-Hardened Steel. Met. Mater. Int. 24, 532–536 (2018). https://doi.org/10.1007/s12540-018-0067-x

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  • DOI: https://doi.org/10.1007/s12540-018-0067-x

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