Evaluation of structural heterogeneity in castings of hull components from gray cast iron

Abstract

It is established in the work that local deformation is most intensively developed around coarse aggregates of lamellar graphite and to a lesser extent in the region of cement plates, and defects are decorated due to diffusion of carbon. It was revealed that rough inclusions of graphite in gray cast iron raise the level of local stresses around which positive values of power dissipation increase due to an increase in the dislocation density. The zones of local stresses are revealed, the magnitude of the phase dispersion, the change in the power functions of the dissipation, and the dislocation density are estimated.