Features of the behavior of the strength properties of iron alloys in the temperature range of magnetic transitions based on the phenomenological theory of phase transitions

• V. A. Dotsenko. Vladivostok State University of Economics and Service. Vladivostok. Russia

• Belous I.A.

  I. А. Belous. Vladivostok State University of Economics and Service. Vladivostok. Russia

Features of the behavior of the strength properties of iron alloys in the temperature range of magnetic transitions based
on the phenomenological theory of phase transitions The establishment of magnetic order in metals and alloys can be considered as the appearance in the main atomic lattice of a conjugate magnetic lattice with sufficient rigidity and energy. The study of the relationship between atomic and magnetic structures is of great interest because magnetic ordering, in some cases, determines the crystallographic symmetry of alloys, affects the processes of motion of dislocations, the kinetics and morphology of phase transformations, and also changes a number of physical properties of materials, including mechanical ones. Based on the study carried out, it can be argued that spin ordering distorts the crystal lattice: at the transition temperature, it becomes less stable, which leads to a significantly higher plasticity of the newly formed magnetically ordered phase; in the temperature regions of magnetic transformations, the plasticity of the antiferromagnetic or ferromagnetic phase is greater than the plasticity of the paramagnetic phase and behaves non-monotonically.

Keywords: alloying alloys, austenite, magnetic restructuring ferromagnetism → paramagnetism,
antiferromagnetism → paramagnetism