Effect of Finishing Treatments on the Fatigue Behavior of Butt-Welded High-Elastic-Linit Weldable Steel Joints

Author:  H.P. Lieurade; Jean-Claude Tourrade
Source:  Rev Gen Chemins Fer V 104 Jul-Aug 85 p357-368
Doc ID:  1985026
Year of Publication:  1985
Abstract:  
In order to assess the savings that could be made by using HELW steels in railway rolling stock construction, a comparative study was made of the fatigue behavior of the steels currently used (A42FP and AC52) and the HELW steels proposed by the steel industry (E355R, E490). Butt-welded joints were tested, with the effect of finishing treatments such as milling the weld seam, tig remelting and prestressing by shot-peening being the main factors considered. X-ray measurements of residual stresses made it possible to propose hypothese concerning the effect of these stresses on the improvement of the fatigue behavior of shot-peened welded joints.