Microstructural studies and impact toughness of dissimilar weldments between AISI 316 L and AH36 steels by FCAW

Effect of Pulsed Current Gas Tungsten Arc Process on the Dissimilar Weldments between Nickel-based Superalloy/Austenitic Stainless Steel

“…1,11) Gas tungsten arc welding (GTAW) associated with continuous current mode is considered to be one of the most widely used welding process to join dissimilar materials. 12,13) However, due to lower cooling rate associated with conventional GTAW process, problems such solidification cracking, microfissuring, increased micro-segregation and precipitation of intermetallic compounds may arise which lead to immense decrease in mechanical as well as corrosion resistance of such dissimilar weldments.…”

Investigation of Mechanical Properties of MIG-Brazed 304 Stainless Steel and EN 10292 Galvanized Steel Joints using Different Current Intensity

“…Thanks to increasing strength, material thickness decreases and that provides decline in material weight and price. Almost all stainless steels can easily be shaped by methods of cutting, brazing, hot and cold shaping [4]. The car assembly industries have recently been using zinc-coated carbon steel sheets in passenger car bodies because they combine good mechanical properties, good corrosion resistance and low purchase cost of this material [5,6].…”

Characterization of microstructure, chemical composition, and toughness of a multipass welded joint of austenitic stainless steel AISI316L

“…Being one of the most significant parameters during the welding treatment, shielding gas protects weld metal from the adverse effects of the nitrogen and oxygen contained in the atmosphere and ensures steady arc and uniform metal transfer. Therefore, type and composition of the gas used considerably affect the microstructure and mechanical characteristics of the joined material [10][11][12][13][14][15][16][17][18].…”

“…High arc energy given by CO 2 gas provides a higher melting speed and satisfactory penetration based on other shielding gas types. Moreover, its oxidative effect in welding arc plasma results in oxidation of the elements contained in the stainless steel such as Mn, Si, Al, Cr, and Ti [11][12][13][14]16]. Some studies have reported that this situation was reported to have a higher amount of inclusion content compared to the alkaline-based additional weld metals due to the fact that it causes inclusion formation in weld metal and the rutile-based additional weld metals have low purification capability [16,19].…”

“…Arivazhagan et al [16] joined modified 9Cr-1Mo material by using the FCAW method and examined the effect of shielding gas, mixed of Ar and CO 2 , on mechanical properties, and they determined that as the CO 2 amount contained in the mixture rate increased, the amount of oxygen contained in dissolved weld metal increased and also the mechanical values decreased and the inclusion amount contained in weld metal increased. It has been shown in numerous studies that it affects composition of the shielding gas used in welding treatment and microstructure and consequently mechanical properties of materials joined as multipass [8,[12][13][14][15][16]21]. However, characterization of the microstructural transformations occurred and the inclusions in oxide form and also their effect on mechanical values were not studied in detail.…”