INFLUENCE OF A MAGNETIC FIELD WITH INDUCTION UP TO 0.5 T ON THE DYNAMICS OF THE DEFORMATION CHARACTERISTICS OF LEAD

10.25712/ASTU.1811-1416.2023.01.006

Abstract

The paper reflects the results of studies effect of a magnetic field (MF) on the deformation characteristics of a diamagnetic material lead grade C2. Initially, studies of the process of creep and microhardness in the initial state were carried out, then studies were carried out using a magnetic field in the process of creep of the samples and magnetic processing of the samples to study the dynamics of microhardness and the plasticity parameter. For the study, the values of magnetic induction were chosen 0.3 T, 0.4 T and 0.5 T. The results of creep tests indicate the presence of an ambiguous nature of the influence of the magnetic field on the creep rate, a change in the sign of the effect was found with an increase in the value of the magnetic field induction to 0.4 T and 0.5 T. Also, the alternating nature of the influence of the magnetic field was also established in the study of microhardness. In addition, it was found that the use of a magnetic field in the process of sample creep quantitatively affects the percentage of relative residual elongation of the sample (decreased compared to the initial one with an increase in the magnetic field induction) upon destruction and the duration of the creep process (increases compared to the initial one at increase in magnetic field induction). A rational exposure time in a magnetic field during tests for microhardness was revealed, it was found that the effect of the influence of a magnetic field manifests itself maximum when holding for 1 hour, in connection with which 2 exposure modes in this range (0.25 h and 0.5 h).