Abstract
In order to develop a method to improve fatigue strength of fillet welded joints made from high strength steel, specimens with special considerations in electrode materials or post welding treatments were made and tested. Fatigue test results showed that weld toe re-melting method or TIG dressing could obviously improved fatigue strength, while applying under matching welds or special electrode with high fluidity had little advantage. These results were discussed in relation to welded toe profile, residual stress and hardness.
