Modelo matemático para la caracterización del envejecimiento del acero 12Cr1MoV superenvejecido a partir del efecto Barkhausen // Mathematical model to characterize the ageing on over aged 12Cr1MoV steel starting from Barkhausen effect

Authors

  • Frank de los Reyes‐Rodríguez Universidad de Oriente. Cátedra de Ciencia de los Materiales. Santiago de Cuba. Cuba
  • Julio Capó‐Sánchez Universidad de Oriente. Cátedra de Ciencia de los Materiales. Santiago de Cuba. Cuba
  • Eduardo Franco‐Fidalgo Universidad de Oriente. Facultad de Ciencias Naturales. Santiago de Cuba. Cuba

Abstract

En el presente trabajo se desarrolla, a partir del efecto Barkhausen, un modelo matemático que permite
caracterizar el grado de envejecimiento del acero 12Cr1MoV empleado en las Líneas Principales de
Vapor (LPV) de las Centrales Termoeléctricas de Cuba. El modelo parte de las ecuaciones del modelo de
Bertotti sobre la variación del flujo magnético en el tiempo, con el cual se obtienen expresiones
matemáticas que correlacionan el voltaje inducido en la bobina, conocido como ruido magnético
Barkhausen (RMB), con el tamaño del grano y de los carburos que son, entre otros, parámetros
microestructurales que definen el grado de envejecimiento del acero estudiado, el modelo desarrollado
describe una disminución y un aumento del voltaje de la señal con el incremento del tamaño de grano y
carburos respectivamente para un mismo valor del campo aplicado, este resultado permite corroborar las
mediciones que se desarrollen del mencionado efecto en aplicaciones prácticas.


Palabras claves: ensayos no destructivos, ruido magnético Barkhausen, envejecimiento en aceros.

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Abstract
In this work, a mathematical model to characterize the ageing degree on 12Cr1MoV steel used on main
steam pipes from power plants is developed. This model start from Bertotti´s model about the variation of
magnetic flux with the time, obtaining different mathematics expressions which relate the induced voltage
on the coil and known as Magnetic Barkhausen Noise (MBN) with grain and carbides size, which
constitute, among others parameters, one that can be used to evaluate the ageing process on the
analyzed steel, with the developed model a decreasing and increasing later of voltage with the increasing
of grain and carbide size respectively for the same magnetic field applied is verified, with this result it is
possible to corroborate the magnetic measurements which be developed using MBN on practice
applications.


Key words: non destructives testing, magnetic Barkhausen noise, microstructure, steels.

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How to Cite

1.
de los Reyes‐Rodríguez F, Capó‐Sánchez J, Franco‐Fidalgo E. Modelo matemático para la caracterización del envejecimiento del acero 12Cr1MoV superenvejecido a partir del efecto Barkhausen // Mathematical model to characterize the ageing on over aged 12Cr1MoV steel starting from Barkhausen effect. Ing. Mec. [Internet]. 2012 Jan. 1 [cited 2025 Sep. 13];15(1):66-72. Available from: https://ingenieriamecanica.cujae.edu.cu/index.php/revistaim/article/view/402

Issue

Vol. 15 No. 1 (2012): january-april

Section

Original article

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