ARC WELDING OF DISSIMILAR STAINLESS STEEL FILLET WELDS

The fusion welding of additively manufactured (AM) materials in the important issue for their reliable application within the structures, which demands the conduction of related research. The paper is focused on a testing of Metal Active Gas (MAG) welding of conventionally manufactured (CM) and AM stainless steel 316L (Selective Laser Melting - SLM). The main objective is the examination of the weldability of AM stainless steel in various combinations with its CM equivalent within fillet welds. The selected filler metal, gas mixture and welding parameters are evaluated through the macrostructure and microstructure analysis of the parent metals (PM), weld metal (WM) and heat affected zone (HAZ). Obtained results represent important preliminary data for the next direction of wider research focused on fusion welding research of SLM stainless steel, and they serve as the base for the assumptions of welding parameters optimization with the outline of future research activities.