This paper studies the influence of martensite content in the 09Cr17Ni5Al two-phase austenitic chromium-nickel steel on acoustic, magnetic and electrical properties. The non-contact electromagnetic-acoustic (EMA) method of excitation and reception of acoustic waves by means of a through-type transducer and the method of magnetic saturation and electrical resistance were used for the research. Acoustic wave velocities, the efficiency of EMA transformation and magnetic saturation intensity were considered as informative parameters.
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