Multiparameter methods in magnetic structuroscopy and nondestructive testing of mechanical properties of steels

Abstract

Methods of nondestructive testing of the quality of metal in hot-rolled, thermally treated, and other states are considered for the cases when structural changes are diversified, one of such structural transformations having an opposite effect on the sensitivity of a particular characteristic to the accompanying transformation, and when one-parameter inspection according to the coercive force is either inefficient or impossible. The natures of the structural and phase sensitivity of the coercive force, the saturation magnetization, and the magnetic permeability are analyzed. Examples of the practical application of multiparameter magnetic structuroscopy are considered.