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In this investigation, AISI 304LN austenitic stainless steel pipes having 25 mm thickness and 300 mm inner diameter with conventional and narrow groove were welded by continuous current gas metal arc welding (GMAW) and pulse current gas metal arc welding (P-GMAW) process. A gas tungsten arc welding (GTAW) process was used for the welding of the roo...
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Citations
... The uniaxial tensile test of BM along with the three welded specimens using various heat input combinations was conducted to assess the joint strength at room temperature ( ) as shown in Fig. 6 and listed in Table 3. The tensile characteristics exhibit enhancement when the heat transfer is reduced [41]. The heat input rises because the groove area or arcing parameter increases. ...
The gas tungsten arc welding (GTAW) method is used with different parameters to join 304SS, 308LSS, and 304SS. welding speed and gas flow rate effects on the characterization of the three welding samples were studied. Optical microscopy (OM) and scanning electron microscopy (SEM) were used to look at the base materials (BM), the heat-affected zone (HAZ), and the welding materials (WM). The tensile strength and hardness were studied for the different welding conditions. The 304SS/308LSS/304SS welding corrosion behavior was examined. The potentiodynamic polarization of the three welding conditions in 3.5% NaCl was investigated. The weld region in the low heat input sample has the lowest CR value (2.140 mm/yr), while the HAZ region in the high heat input sample has the lowest CR value (0.29 mm/yr). The SEM investigated the morphology of the three corroded welding conditions. It was found that the welding parameters had an impact on the average pit size of the corroded samples. The HAZ region in the high heat input sample has the lowest average pit size (0.329 µm).
