The effect of plastic strain and the orthogonal bias field on the processes of magnetization of low-carbon steel

Abstract

The field dependences of the differential magnetic permeability on the magnetization curves of annealed and plastically strained specimens from low-carbon 20 steel were investigated. The measurements were performed with the simultaneous action of the magnetizing field and perpendicular bias fields of different magnitudes. The results were obtained for non-strained and pre-strained specimens. It was revealed that application of an orthogonal bias field allowed the separation of the contributions of different domain boundaries (the 180° and 90° boundaries) into the processes of magnetization and remagnetization. The critical fields of 90° transitions will be determined not only by the induced magnetic anisotropy that is due to strain, but also by the magnitude of the applied bias field.