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Residual stresses in heavy wall weldments

: Pfeiffer, W.

Andersen, O.; Thaulow, C.; Hauge, M. ; Statoil, Trondheim:
Safety in application of high strength steel. Proceedings from the International Symposium
Trondheim: Statoil, 1997
9 pp.
International Symposium "Safety in Application of High Strength Steel" <1997, Trondheim>
Conference Paper
Fraunhofer IWM ()
Eigenspannung; Röntgenbeugung; Schweißen

Residual stress (RS) measurements were performed on submerged arc welded (SAW) wide plates using the X-ray diffraction technique. High tensile RS up to yield strength of the apparent material were obtained at the surface. The through-the-thickness distributions are characterized by compressive RS in the center of the X-joints balanced by tensile RS in the near-surface regions. For the overmatch conditions examined in this work the increase of the near-surface RS was found to be in the same order as the increase in yield strength of the weld metal. Post-weld heat treated (PWHT) welds showed significant RS up to 150 MPa near the surface.