Papers by Author: V.A. Udovenko

Abstract: Industrial high damping steels based on the Fe - Al metallic system have been studied. The optimization of the crystalline structure of the industrial damping steels has been shown to be very important for the achievement of high mechanical properties including high fatigue resistance. In the same time the achievement of high damping properties strongly depends on the magnetic domain structure of the material and, consequently, on the heat treatment procedure.

Abstract: High damping Fe - Cr and Fe - Al alloys have been studied in two different states: in the high damping state and in the suppressed damping capacity state. It has been shown that magnetic domain structures of Fe - Cr and Fe - Al alloys are fundamentally different in the high damping state and in the state with the suppressed damping. Magnetic domain structure corresponding to the high damping state can be characterized by an enhanced volume fraction of the easy movable 90o-domain walls, but the state with the suppressed damping capacity can be characterized by the enhanced volume fraction of the 180o-domain boundaries.

Abstract: It is shown that industrial high damping steels based on the Fe-Al metallic system are characterized by a very high level of internal dissipation of elastic energy. The specific damping capacity of industrial steels exceeds 40 % and their damping properties are close to those of highpurity damping alloys based on the Fe-Al system. Mechanical properties of damping steels are similar to those of conventional construction steels. High level of properties of damping steels can be explained by their specific crystalline and magnetic structure.