Influence of Cold Working on the Mechanical Field around Creep Crack Tip of Stress Corrosion Cracking

Abstract

To understand the effect of cold working on the mechanical properties of stress corrosion cracking in 304 stainless steel, the influence of different cold working on the stress strain field near the crack front of 304SS was analyzed using ABAQUS. Results show that Mises stress will increase with increasing of the CW before creep. As the creep process is going on, the effect of cold working on the Mises stress around crack front will become weaker; Cold working will cause the decrease of the low-plasticity strain region at the crack front, but has little effect on the high plastic strain; Cold working will also cause the crack tip creep strain increase to a certain extent, indicating that the cold working will accelerate stress corrosion cracking to some extent.