Post-treatment of welding joints of high strength steels I.

Improving weld geometry – Overview




high strength steels, post weld treatment, weld geometry improvement, fatigue strength improvement


The International Institute of Welding (IIW) published a recommendation on methods for improving the fatigue strength of welded joints in 2013, valid for maximum specified yield strength of 900 MPa. In this time was consider that by using these methods is reasonable to expect that fatigue performance of welded higher strength will also improve. Since the publication several studies investigate different improvement techniques effects on high strength steels fatigue strength. The aim of this paper is to review post treatment techniques by improving the weld geometry consider the application of these techniques in high-strength steels. The post treatment techniques by residual stress methods will be reviewed in the second part of our article.