Paper Title:
Temperature Dependence of Barkhausen Noise Parameters in Carbon Steel
  Abstract

Temperature dependence of different parameters (the position of the inflexion point and the saturation value on the root main square, RMS, values versus exciting field curves) of the Barkhausen noise is measured in structural steel (S 235 JRG1). It is shown that while the position of the inflexion point remained constant, the RMS value at the inflexion point and saturation value increased with the increasing temperature, T. Most interestingly the field required for saturation decreased with decreasing temperature and had a breakpoint at about 200K. Breakpoints at the same temperature on the critical exponents versus temperature functions (i.e. on the β(T) and α(T) curves, where β and α are the exponents of the probability distributions of peak heights and durations, respectively) were also observed. This temperature can be identified as the ductile-brittle transition temperature.

  Info
Periodical
Materials Science Forum (Volumes 537-538)
Edited by
J. Gyulai and P.J. Szabó
Pages
371-380
DOI
10.4028/www.scientific.net/MSF.537-538.371
Citation
L. Harasztosi, L. Daróczi, I.A. Szabó, Z. Balogh, D. L. Beke, "Temperature Dependence of Barkhausen Noise Parameters in Carbon Steel", Materials Science Forum, Vols. 537-538, pp. 371-380, 2007
Online since
February 2007
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Price
$32.00
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