About the article
A.N. BOLOTOV
The work is devoted to the study of the influence of a stationary magnetic field on the quasi-brittle fracture of specimens made of a ferromagnetic material – cast iron grade SCh35. It is shown that the anisotropic nature of quasi-brittle fracture is observed in magnetized samples, and the value of mechanical stresses at which fracture occurs somewhat decreases. Cracks dominate, which begin to propagate along the magnetic field lines. A reasonable assumption is made that the magnetic forces acting on the walls of a microcrack stimulate its growth at lower mechanical stresses. The magnetic forces are proportional to the magnetization of the samples to the second power. The maximum effect of the magnetic field is manifested in samples magnetized to saturation, and this condition determines the magnitude of the magnetizing field.
gray cast iron, magnetic field, microcracks, quasi-brittle fracture.