Effect of Interstitial Elements on the Welding of Selective Laser Melted Stainless Steel Alloys

Devon Gonzales, along with his colleagues at the Colorado School of Mines and Los Alamos National Laboratory, conducted extensive research in order to answer a seemingly simple question: How does interstitial element distribution affect gas tungsten arc welding? Specifically, they were interested in determining how trace amounts of elements like nitrogen, phosphorus, and oxygen affect welding on 304L stainless steel. In his presentation, Mr. Gonzales dives into the technical aspects of the research and offers his team’s insights and takeaways. The findings discussed in this presentation should appeal to not only those involved in GTAW, but anyone interested in the microstructure of metals, or the weldability and cracking susceptibility of stainless steel alloys.