Eleventh International Conference on Internal Friction and Ultrasonic Attenuation in Solids
J. Phys. IV France 06 (1996) C8-527-C8-530
Microstructure Inspection by Means of Mechanical Barchausen Effect AnalysisB. Augustyniak1 and J. Degauque2
1 Department of Applied Physics and Technical Matematics, Technical University of Gdansk, 80-355 Gdánsk, Poland
2 Department of Physics, INSA de Toulouse, 31520 Toulouse cedex, France
This paper presents results of the application of the mechanical Barkhausen effect (MBE) for the evaluation of the strain dependence of magnetomechanical internal friction (MIF) and the internal stress distribution function. Both functions were obtained from the "first load" mechanical Barkhausen effect (MBE) strain dependence. The MBE intensity was measured with torque motor applying shear stress with constant time rate. This new method was tested for pure iron and Fe-C (160 ppm of C) alloy with different precipitation states. The evaluated strain dependence of the MIF was compared with the experimental MIF functions measured with a pendulum. It is sugested that the very close relationship between the two dependencies confirms the validity of the performed evaluation of the internal stress distribution function.
© EDP Sciences 1996