A Study of the Microhardness and Plasticity Parameter of Lead in External Magnetic Fields with an Induction of up to 0.5 T

The microhardness of samples of technically pure lead was measured with and without exposure to an external magnetic field with inductions of 0.3, 0.4, and 0.5 T. Dependences of the microhardness of the C2 lead surface on the exposure time in a magnetic field were obtained reflecting the influence of the magnetic field on the plastic characteristics of lead. The exposure time during which the effect on microhardness is maximum was identified. Microhardness tests were carried out in addition on samples of technically pure lead without and under the influence of an external magnetic field with inductions of 0.3, 0.4, and 0.5 T and exposure times of 0.25, 0.5, and 1 h. Based on the microhardness data thus obtained, the plasticity parameter of lead in the original state and after exposure to an external magnetic field was calculated and the dependences of the plasticity parameter on the exposure time are shown. The nature of the plasticity parameter variation during lead exposure to a magnetic field with an induction of up to 0.5 T was identified. The percentage changes in microhardness values depending on the magnetic field induction are shown.