Post-fire structural changes in welded joints of unalloyed steels

Abstract

In the article deals with the issue of the impact of fire on changes in the structure and mechanical properties of welded joints of non-alloy steel elements. The processes occurring during welding, affecting the obtained input structure and properties in the weld and in the heat affected zone, were analyzed. On this basis, a concise analysis of the impact of low- and high-temperature fire and the method of extinguishing it on changes in the structure and mechanical properties of welded joints of non-alloyed steels was made. Recommendations for conducting post-fire expertise of welded steel structures are included