Investigation of TIG Dressing and Chilling Treatment for Improving the Fatigue Strength of Welded Joints
The negative temperature field with a certain strength is exerted on the TIG dressing zone in welding toes, which could decrease and offset the residual stress. When the temperature of TIG dressing zone is or above 450 °C, the chilling treatment could produce the stress field of biaxial compression. The chilling treatment is performed when the temperature of dressing zone is 550 °C. The fatigue strength of joints can be increased more than twice comparing with those after welding.
Fei Hu and Beibei Wang
P. Zhu et al., "Investigation of TIG Dressing and Chilling Treatment for Improving the Fatigue Strength of Welded Joints", Advanced Materials Research, Vol. 279, pp. 230-234, 2011