ISSN:
1662-9752
Source:
Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
Topics:
Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
Notes:
Temperature dependence of different parameters (the position of the inflexionpoint and the saturation value on the root main square, RMS, values versus exciting fieldcurves) of the Barkhausen noise is measured in structural steel (S 235 JRG1). It is shown thatwhile the position of the inflexion point remained constant, the RMS value at the inflexionpoint and saturation value increased with the increasing temperature, T. Most interestingly thefield required for saturation decreased with decreasing temperature and had a breakpoint atabout 200K. Breakpoints at the same temperature on the critical exponents versus temperaturefunctions (i.e. on the β(T) and α(T) curves, where β and α are the exponents of the probabilitydistributions of peak heights and durations, respectively) were also observed. Thistemperature can be identified as the ductile-brittle transition temperature
Type of Medium:
Electronic Resource
URL:
http://www.tib-hannover.de/fulltexts/2011/0528/02/14/transtech_doi~10.4028%252Fwww.scientific.net%252FMSF.537-538.371.pdf
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