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

2018 2nd International Conference on Advanced Technologies in Manufacturing and Materials Engineering

Yinghao, Cui^1 ; Lingyan, Zhao^2 ; Weibing, Wang^1

School of Mechanical Engineering, Xi'An University of Science and Technology, Xi'an

710054, China^1

School of Science, Xi'An University of Science and Technology, Xi'an

710054, China^2

关键词: 304 stainless steel;    Creep process;    Creep strain;    Low plasticities;    Mechanical field;    Mises stress;    Strain region;    Stress-strain field;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/389/1/012029/pdf
DOI  :  10.1088/1757-899X/389/1/012029

来源: IOP

【 摘 要 】

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.