MAGNETOELASTIC PROPERTIES OF X₃₀Cr₁₃ CONSTRUCTIONAL STEEL IN RAYLEIGH REGION

Maciej Kachniarz – Roman Szewczyk

   In the paper results of the investigation of magnetoelastic properties of X₃₀Cr₁₃ constructional steel in Rayleigh region are presented. Digitally controlled measurement setup utilizing hydraulic press for applying mechanical stresses is described and methodology of measuring magnetic hysteresis loop in Rayleigh region is discussed. On the basis of the obtained magnetoelas-tic characteristics, mathematical model of the investigated phenomenon is determined, including polynomial equations describ-ing changes of initial magnetic permeability and so called Rayleigh coefficient depending on the value of applied mechanical stress, which allows to simulate shape of the Rayleigh hysteresis loop under given value of mechanical stress. Obtained model-ing results show high compatibility with experimental data, which indicates that determined model can be used to simulate in-fluence of mechanical stress on the magnetic properties X₃₀Cr₁₃ constructional steel in Rayleigh region. This allows to sup-pose that similar models can be developed for other constructional ferromagnetic materials.

Keywords: magnetoelastic effect, Rayleigh region, constructional steel, modelling

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