High resolution transmission electron microscopy and molecular simulation analysis of ε-Fe2-3N and γ’-Fe4N formation for a nitrided 4140 steel

Authors

  • Luis Béjar Universidad Michoacana de San Nicolás de Hidalgo (UMSNH)
  • Ariosto Medina-Flores Instituto de Investigaciones en Materiales. Universidad Nacional Autónoma de México - SEP-DGEST-IT
  • Ismeli Alfonso Instituto de Investigaciones en Materiales. Universidad Nacional Autónoma de México
  • Héctor Carreón Universidad Michoacana de San Nicolás de Hidalgo (UMSNH)
  • José Solis SEP-DGEST-IT

DOI:

https://doi.org/10.3989/revmetalm.041

Keywords:

HRTEM, Morphology, Nitriding, Phases, Simulation

Abstract


High Resolution Transmission Electron Microscopy (HRTEM) and molecular simulation techniques were applied to analyze phase formation in the post-discharge microwave nitriding process of a 4140 steel. The results showed the formation of ε-Fe2-3N and γ’-Fe4N. The morphology of the γ’-Fe4N phase was composed by cubic nanoparticles that grows in the < 0 0 1 > axis direction. Otherwise, the ε-Fe2-3N crystal is associated to hexagonal faces in the [0 0 1] direction which grows forming angles of 120°. The comparison between experimental and analytical results allowed a better understanding of the phases formed during this nitriding process.

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Published

2015-06-30

How to Cite

Béjar, L., Medina-Flores, A., Alfonso, I., Carreón, H., & Solis, J. (2015). High resolution transmission electron microscopy and molecular simulation analysis of ε-Fe2-3N and γ’-Fe4N formation for a nitrided 4140 steel. Revista De Metalurgia, 51(2), e041. https://doi.org/10.3989/revmetalm.041

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