Optimal welding technology of high strength steel S690QL
Journal Title: Materials Engineering - Materialove inzinierstvo (MEMI) - Year 2015, Vol 22, Issue 1
Abstract
In this paper is presented the detailed procedure for defining the optimal technology for welding the structures made of the high strength steel S690QL. That steel belongs into a group of steels with exceptional mechanical properties. The most prominent properties are the high tensile strength and impact toughness, at room and at elevated temperatures, as well. However, this steel has a negative characteristic - proneness to appearance of cold cracks. That impedes welding and makes as an imperative to study different aspects of this steel's properties as well as those of eventual filler metal. Selection and defining of the optimal welding technology of this high strength steel is done for the purpose of preserving the favorable mechanical properties once the welded joint is realized; properties of the welded metal and the melting zone, as well as in the heat affected zone, which is the most critical zone of the welded joint.
Authors and Affiliations
Dusan Arsic, Vukic Lazic, Ruzica Nikolic, Srbislav Alexandrovic, Branislav Hadzima, Milan Djordjevic
Keywords
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