Evaluation and Prediction of Formation of Heat-Affected Zone and Mechanical Properties According to Welding Method of STS 316L/A516-70N Clad Plates

Two welding methods of FCAW (Flux-cored arc welding) + FCAW, and GTAW (Gas tungsten were compared to identify effective routes for STS 316L/A516-70N clad stainless steel. Since the speed method is slower than that method, amount heat input large, size heat-affected zone formed larger, angular deformation also large. The microstructure specimens investigated by computational simulation, results with calculated actual specimens. very similar, thus confirming high accuracy calculation. After measuring hardness value welded specimens, specimen was found have a higher value. portion tests tended remain at nearly same throughout specimen, indicating profile desirable. In computer butt used set optimal source conditions two methods, effect during confirmed using thermal analysis according conditions. Based on conditions, residual stress strain are discussed, calculations C-seam (circumferential seam) L-seam (longitudinal in manufacture pressure vessels.