Determinación de las condiciones experimentales óptimas de un acero AISI 4140 nitrurado por plasma postdescarga micro-ondas

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

doi:10.3989/revmetalm.2005.v41.iExtra.1022

Determination of the experimental optimal conditions of an AISI 4140 steel nitrided by postdischarge micro-waves

Authors

A. Medina-Flores Instituto de Investigaciones Metalúrgicas (IIM). Edificio "U". Universidad Michoacana de San Nicolás de Hidalgo (UMSNH)
L. Béjar-Gómez Facultad de Ingeniería Mecánica. Edificio "W". Universidad Michoacana de San Nicolás de Hidalgo (UMSNH)
C. Maldonado-Zepeda Instituto de Investigaciones Metalúrgicas (IIM). Edificio "U". Universidad Michoacana de San Nicolás de Hidalgo (UMSNH)

DOI:

https://doi.org/10.3989/revmetalm.2005.v41.iExtra.1022

Keywords:

Nitridation, Characterization, Post-discharge, Eutectoide, Reactor

Abstract

AISI 4140 steel pieces were nitrided by an experimental reactor made in laboratory. A series of runs were to carry out to find the correct parameters below the point of transformation eutectoide (590 °C), which a compact, homogeneous and harder nitrided layer was formed on the top of the surface. Several characterizations techniques were used to analize the microsctructural change, such as, optical microscopy (OM), microhardness Vickers, X-Ray diffraction (DRX). The results showed the formation of a compact and homogeneous layer formed by a mixture of ε-Fe_2,3N and γ’-Fe₄N iron nitrides whit an average of 12 μm of thickness. The Vickers results showed a value of 1100 Hv on the top of the surface a concentration profile of microhardness is observed from the top of the surface to the core of the material.

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Published

2005-12-17

How to Cite

Medina-Flores, A., Béjar-Gómez, L., & Maldonado-Zepeda, C. (2005). Determination of the experimental optimal conditions of an AISI 4140 steel nitrided by postdischarge micro-waves. Revista De Metalurgia, 41(Extra), 187–192. https://doi.org/10.3989/revmetalm.2005.v41.iExtra.1022

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Issue

Vol. 41 No. Extra (2005)

Section

Articles

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