Structural Sensitivity of the Parameters of Asymmetric 'Coercive Return–Magnetization' Cycle in Heat-Treated Low-Carbon Steels
| Autor: | S. G. Sandomirskii, V. N. Kostin, O. N. Vasilenko |
|---|---|
| Rok vydání: | 2018 |
| Předmět: |
Quenching
Materials science Structural material Condensed matter physics 020502 materials Mechanical Engineering 02 engineering and technology Coercivity Condensed Matter Physics 01 natural sciences Magnetic field Magnetic anisotropy Magnetization 0205 materials engineering Mechanics of Materials 0103 physical sciences Heat treated General Materials Science Tempering 010301 acoustics |
| Zdroj: | Russian Journal of Nondestructive Testing. 54:776-783 |
| ISSN: | 1608-3385 1061-8309 |
| DOI: | 10.1134/s1061830918110050 |
| Popis: | It has been shown both theoretically and experimentally that as the tempering temperature of quenched low-carbon steels increases up 600–650°C, the values of induction on the asymmetric “coercive return–magnetization” cycle decrease monotonically at fixed, proportional to the coercive force, values of magnetic field. This effect is associated with a transition from structures with a uniaxial magnetic anisotropy (after quenching) to structures with three easy-magnetization axes (after hightemperature tempering). Within the model of prevailing 180° displacements, numerical estimates have been produced for the magnetic parameters of the “coercive return–magnetization” cycle in these magnetic structures. The estimates are in a good agreement with experimental data. It is shown that induction resulting from the inversion (polarity switching) of coercive field exhibits a structural sensitivity that is similar to that demonstrated by coercive-return magnetization and is therefore a promising parameter for magnetic structural analysis. It has been demonstrated that the proposed parameter can be measured locally using the DIUS-1.15M mobile hardware-software system. |
| Databáze: | OpenAIRE |
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