Structure Formation and Properties of Corrosion-Resistant Steel with Treatment by a Highly Concentrated Energy Source

Abstract

Structure formation and corrosion breakdown of martensitic class corrosion-resistant steels in an area of thermal action during treatment by highly concentrated energy sources are studied. Heating conditions are reproduced by means of simulating a welding thermal cycle. Corrosion resistance and hardness of the heat-affected zone are studied. A mechanism is revealed for corrosion breakdown of steel EP-56 simulated specimens. Features are established for the effect of heat treatment and welding regimes on resistance of a heated section to corrosion cracking.