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Molecular Dynamics Simulation Study on the Effect of the Loading Direction on the Deformation Mechanism of Pearlite

Abstract

Molecular dynamics simulations were carried out to study the effect of the loading direction on the deformation behavior of the pearlite structure with a Bagaryatsky orientation relationship at the ferrite-cementite interface. We found excellent ductility in the ferrite and pearlite nanocomposites along the \(\left[ {\bar{1}10} \right]_{f} ||\left[ {001} \right]_{c}\) loading direction, while a brittle behavior was observed along the \(\left[ {111} \right]_{f} ||\left[ {100} \right]_{c}\) loading direction because of the reduced number of activated slip systems. Additionally, we reveal that the ductility is improved by either increasing the temperature or reducing the interlamellar spacing.

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Acknowledgements

H.G. and A.K.T. acknowledge the Research Board of Sharif University of Technology, Tehran, Iran, and the Iran National Science Foundation for financial support of the project. This research was supported by Basic Science Research Program through the National Research Foundation of Korea(NRF) funded by the Ministry of Science, ICT & Future Planning (2016R1C1B2016484 and 2016R1C1B2011979).

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Correspondence to Keonwook Kang or Seunghwa Ryu.

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Ghaffarian, H., Taheri, A.K., Kang, K. et al. Molecular Dynamics Simulation Study on the Effect of the Loading Direction on the Deformation Mechanism of Pearlite. Multiscale Sci. Eng. 1, 47–55 (2019). https://doi.org/10.1007/s42493-018-00003-z

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Keywords

  • Molecular dynamics simulation
  • Nanocomposite pearlite
  • Loading direction
  • Deformation mechanism