The stress dependence of the magnetic characteristics of heat resistant steel 13CrMo4-5 and the possibility of the stresses assessment on the base of these characteristics

Abstract

Paper presents the results of investigation on the tensile stresses dependence of magnetic characteristics of the heat resistant 13CrMo4-5 steel. For this investigation, the frame-shaped samples were used. Due to the specialized force reversing system, compressive force generates the uniform tensile stresses in the sample. Magnetic characteristics are measured under these stresses by digitally controlled hysteresis graph. On the base of results of measurements the magnetoelastic characteristics of resistant 13CrMo4-5 steel were determined. These characteristics indicate that change from elastic to plastic deformation significantly changes the magnetic properties of this steel. This information has great technical importance from the point of view of non-destructive testing of construction elements made of heat resistant 13CrMo4-5 steel.