Abstract
The change in the coercive force under biaxial asymmetric (tension and compression in mutually perpendicular directions) cyclic deformation of cross-shaped steel 3 specimens in the elastic region of deformations was studied. Specimens were deformed beforehand under biaxial asymmetric loading to various degrees of plastic deformation. It was demonstrated that the elastic-deformation dependences of the coercive force measured along the tension and compression directions are qualitatively similar to those under uniaxial tension or compression. It was also shown that, under cyclic elastic loading, these dependences are reversible for well-annealed steel and have a hysteresis that expands with increasing degree of plastic deformation for plastically deformed steel. The possible causes of the hysteresis in the dependence of the coercive force on the elastic cyclic deformations under biaxial loading are discussed. It was supposed that the hysteresis of the coercive force was caused by the appearance of free (not bound in carbide phases) carbon atoms playing the role of interstitial impurity atoms for the α-iron lattice in plastically deformed carbon steels. The possibility of estimating the stressed-strained state of steel under biaxial loading using a magnetic method was discussed.
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Original Russian Text © V.A. Zakharov, A.I. Ul’yanov, E.S. Gorkunov, 2010, published in Defektoskopiya, 2010, vol. 46, no. 3, pp. 55–69.
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Zakharov, V.A., Ul’yanov, A.I. & Gorkunov, E.S. Regularities of the change in the coercive force under biaxial asymmetric deformation of steel 3. Russ J Nondestruct Test 46, 194–205 (2010). https://doi.org/10.1134/S1061830910030071
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DOI: https://doi.org/10.1134/S1061830910030071