Characterization for HRTEM of AISI 4140 steel nitrided by postdischarge micro-wave
DOI:
https://doi.org/10.3989/revmetalm.2005.v41.iExtra.1048Keywords:
HRTEM, Iron nitrides, Nano-analysis, FEG, PPTAbstract
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-Fe2-3N and γ’-Fe4N, which had coherency whit the matrix. By other hand the following crystallographic relations were determined: (110) Fe-α ║ (1001) ε-Fe2-3N ║ (110) γ’-Fe4N and [1-1 0]Fe-α ║ [1 0-1 0] ε-Fe2-3N ║ [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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