Caracterización mediante HRTEM de un acero AISI4140 nitrurado por postdescarga micro-ondas

L. Béjar-Gómez; A. Medina-Flores; M. Pérez-López; C. Maldonado-Zepeda

doi:10.3989/revmetalm.2005.v41.iExtra.1048

Characterization for HRTEM of AISI 4140 steel nitrided by postdischarge micro-wave

Authors

L. Béjar-Gómez Facultad de Ingeniería Mecánica. Universidad Michoacana de San Nicolás de Hidalgo (UMSNH)
A. Medina-Flores Instituto de Investigaciones Metalúrgicas (IIM). Universitaria. Universidad Michoacana de San Nicolás de Hidalgo (UMSNH)
M. Pérez-López Facultad de Ingeniería Mecánica. Universidad Michoacana de San Nicolás de Hidalgo (UMSNH)
C. Maldonado-Zepeda Instituto de Investigaciones Metalúrgicas (IIM). Universitaria. Universidad Michoacana de San Nicolás de Hidalgo (UMSNH)

DOI:

https://doi.org/10.3989/revmetalm.2005.v41.iExtra.1048

Keywords:

HRTEM, Iron nitrides, Nano-analysis, FEG, PPT

Abstract

An analysis of the nitrides formed in an AISI 4140 steel nitrided by postdischarge microwave nitriding treatment was carried out by high resolution transmission electron microscopy (HRTEM), fast Fourier transform (FFT) and nanoanalysis. The steel samples were nitrided below of the eutectoid transformation point (590 °C), after nitriding the samples were cooling slowly inside in the reactor whit an argon atmosphere. The analysis were carried out in a FEG-TEM PHILIPS TECNAI F20 at 200 Kv. The results showed the morphology and size of the nitrides ε-Fe_2-3N and γ’-Fe₄N, which had coherency whit the matrix. By other hand the following crystallographic relations were determined: (110) Fe-α ║ (1001) ε-Fe_2-3N ║ (110) γ’-Fe₄N and [1-1 0]Fe-α ║ [1 0-1 0] ε-Fe_2-3N ║ [0 1 1] Fe₄N.

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Published

2005-12-17

How to Cite

Béjar-Gómez, L., Medina-Flores, A., Pérez-López, M., & Maldonado-Zepeda, C. (2005). Characterization for HRTEM of AISI 4140 steel nitrided by postdischarge micro-wave. Revista De Metalurgia, 41(Extra), 318–323. https://doi.org/10.3989/revmetalm.2005.v41.iExtra.1048

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Issue

Vol. 41 No. Extra (2005)

Section

Articles

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