Geometrical and Welding Conditions on Through-Thickness Residual Stress in Primary Piping of Girth Welded Joints
Recently, stress corrosion cracking (SCC) of primary piping of stainless steel has been observed. SCC is considered to initiate and progress at near the welding zone in butt-welded pipes, because of the tensile residual stress introduced by welding. In present work, three-dimensional and axisymmetric thermo-elastic-plastic finite element analyses have been carried out, in order to clarify the effect of geometrical and welding conditions on through-thickness residual stress. In particular, butt-welding joints of SUS316L pipes have been examined. The residual stress was simulated by three-dimensional and axisymmetric models and the results were compared and discussed in detail.
Changhee Lee, Jong-Bong Lee, Dong-Hwan Park and Suck-Joo Na
J. Katsuyama et al., "Geometrical and Welding Conditions on Through-Thickness Residual Stress in Primary Piping of Girth Welded Joints", Materials Science Forum, Vols. 580-582, pp. 573-576, 2008