Friction stir welding (FSW) is a recently developed solid-state joining process that uses a specially shaped rotating tool to produce lap or butt joints. At the National Research Council, an inter-institute collaboration was started in 2007 with the goal of exploiting the NDE expertise and applying it for the characterization of friction stir welds for various industrial applications. In partic...

Abstract The Mechanical and Stretch-Bend Failure studies on Ultra High Frequency Pulsed Gas Tungsten Arc Welded dissimilar joints of AISI409-AISI430 Ferritic Stainless Steels were conducted. Welding was conducted with 5 ultra high frequencies (50 Hz, 150 250 350 450 Hz). characteristics evaluation the included tensile strength, microhardness variations across welds creep. Microstructural metall...

mechanical properties of dissimilar weld joints between gost09ch16n4b (a martensitic stainless steel) and aisi 4130 thin sheets made by gas tungsten arc welding (gtaw) were studied using er410nimo and er100s-g filler metals in post weld heat treated conditions. heat treatment cycles consisted of austenitization at 900, 950 and 1000 °c for 1 h and this was followed by oil cooling and tempering a...