Effect of the Type and Morphology of Grain Boundaries on Stress Corrosion Cracking in Low-Alloy, Low-Carbon Steel

Abstract

A technique has been proposed for identifying the type of grain boundaries via three-dimensional reconstruction with the use of orientation mapping, in which possible orientations are examined in order to determine the minimum lattice rotation angle. We have examined their effect on the stress corrosion cracking (SCC) resistance of low-carbon, low-alloy steel in a near-neutral medium and determined crystallographic and geometric parameters of the transition from intergranular to transgranular SCC crack growth path.