Abstract
The features of magnetoelastic acoustic emission (MAE) generation in the low-carbon (ferritic-pearlitic) steels during their magnetization by an external quasi-static magnetic field are investigated. The influence of elastic stresses, plastic deformations, volume damage of the material, heat treatment as well as the carbon content in iron alloys and the volume of remagnetization on the sum of the MAE signals amplitudes is established. An increase of the magnetization volume and heat treatment lead to an increase of the sum of the MAE signals amplitudes. The other factors cause its decrease compared to the state of supply of the ferromagnet. The obtained results are important for the construction of methods for assessing the local degradation of equipment materials of pipeline networks.
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