Dissimilar welding of Incoloy 825 to AISI 316L austenitic stainless steel and evaluation of Microstructure and Mechanical properties

In the present study, dissimilar joints welding of Incoloy 825 superalloy / 316L austenitic stainless steel by gas tungsten arc welding (GTAW) were investigated. In Inconel 625 weldment, dendretic microstructure was seen where cell-dendretic microstructure was found in base metal. There was no solidification crack in structure. In weldment/base metal interface, grain growth was seen in all of them except in 316L base metal/weldment 308L.Improved mechanical properties of weldment were attained by using of Inconel 625 welding wire.