This paper aims to investigate the temperature analysis of Inconel 825/AISI 410 welding through friction stir welding (FSW) process. The model was used for parametric experiments to determine how input parameters like total heat input, welding speed, and clamping location affect workpiece temperature distribution and residual stress. This research found that heat input is mostly constrained by the lower bound of the temperature for good welds; the optimal welding speed must balance heat input loss and productivity gain; and clamping closer to the weld lowers peak residual stresses. The result shows the temperature variation in different welding speed, which is used to produce the high-quality welding.

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