Acoustic Barkhausen Effect Observed in Various Steels

Abstract:

Carrying out fatigue testing of reactor vessel material 15H2MFA acoustic emission sensors were applied to follow changes. It is shown, that observed bursts can be explained only with appearance of acoustic Barkhausen Effect (ABE). Interesting source localization is shown during heat treatment and consecutive stress test, which can be explained acoustic emission due to material transition from martenzit phase to bainite phase. Observed ABE opens the way to apply it in industry using magnetic stresses to provoke acoustic response for characterization of the state of the magnetic materials.

• Periodical: Materials Science Forum (Volume 885)
• Pages: 208-215
• DOI: https://doi.org/10.4028/www.scientific.net/MSF.885.208
• Online since: February 2017
• Authors: Gabor Por*, Balazs Fekete, Peter Trampus
• Keywords: Acoustic Emission, Barkhausen Noise, Ferrite Steels, Gleeble Thermo Mechanical Simulator, Material Characterization, TRIP Steel

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