Abstract
Layered cylindrical vessels are widely used in process industries. The weld clad is applied before the girth welding of layered-to-layered sections. In this paper, a numerical method was used to predict residual stresses in a layered-to-layered joint with weld clad. The results showed that high residual stresses were generated in the weld and heat affect zone (HAZ), and a discontinuous stress distribution was generated. The through-wall axial residual stress at the weld centerline (WCL) was predominately tensile. The axial residual stress in each layer at the HAZ demonstrated a bending type distribution. The through-wall hoop residual stress at the WCL was predominately compressive in the V-groove zone, and it was tensile in the U-groove zone. The weld clad can decrease the peak residual stress in the tip of the interlayer gaps.
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