Integrated experimental FE analysis of temperature distribution, molten metal flow, and residual stress in GTAW dissimilar metal welds for engine exhaust system

Key Points

• Temperature distribution is critical in understanding molten metal flow and its impact on residual stress in welds.
• The analysis showed significant variations in thermal behavior during the welding process, emphasizing the complexity of GTAW.
• Finite element analysis was utilized to model the interactions between thermal, mechanical, and metallurgical properties in dissimilar metal welds.
• This study highlights the need for precise control in welding processes to optimize the performance of engine exhaust systems.