Welding in the World

, Volume 63, Issue 1, pp 43–51 | Cite as

Formation of multi-axial welding stresses due to material behaviour during fabrication of high-strength steel components

  • Dirk SchroepferEmail author
  • Arne Kromm
  • Thomas Kannengiesser
Research Paper


Today, an expanding application of high-strength steels in modern welded constructions can be observed. The economical use of these steel grades largely depends on the strength and reliability of the weldments. Therefore, the special microstructure and mechanical properties of these grades have to be taken into account by keener working ranges regarding the welding parameters. However, performance and safety of welded components are strongly affected by the stresses occurring during and after welding fabrication locally in the weld seam and globally in the whole component, especially if the shrinkage and distortion due to welding are restrained. Some extensive studies describe the optimization of the welding stresses and the metallurgical effects regarding an adapted welding heat control. Lower working temperatures revealed to be particularly effective to reduce the local and global welding-induced residual stresses of the complete weld significantly. However, decreased interpass temperatures cause concurrently higher stresses during welding fabrication. This work shows strategies to reduce these in-process stresses. With help of multi-axial welding stress analyses in component-related weld tests, using a special 2-MN-testing facility, differences in stress build-up are described in detail for root welds, filler layers and subsequent cooling to ambient temperature.


Residual stresses GMA welding Restraint High-strength steels Process parameters 



Sincere thanks are given for the support and to the representing companies actively involved in the project board.

Funding information

The studies were funded by the AiF-project IGF-Nr. 17267 N (FOSTA P922) and 17978 N (FOSTA P1011).


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Copyright information

© International Institute of Welding 2018

Authors and Affiliations

  1. 1.Bundesanstalt für Materialforschung und-prüfung (BAM)BerlinGermany

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