A thermomechanical finite element (FE) model was used to examine the effects of resistance spot welding (RSW) current intensity, time, and electrode force on the distribution of temperatures and the size of nuggets of IN-625 superalloy sheets. In order to evaluate and optimize the mechanical properties of RSW welded IN-625 alloy, a procedure was developed based on simulation results. A taguchi L9 experimental design was used to study the mechanical properties of welded samples as a function of peak load, failure mode, and energy. According to the findings, joint fracture modes and strength are significantly influenced by process parameters. Consequently, welding current, electrode force, and welding time all had significant impacts on the shear strength of IN-625 Alloy spot welding joints, with impacts of 62.05%, 24.06%, and 12.84%, respectively.

使用热机械有限元 (FE) 模型研究电阻点焊 (RSW) 电流强度、时间和电极力对温度分布和 IN-625 高温合金板熔核尺寸的影响。为了评估和优化 RSW 焊接 IN-625 合金的机械性能，根据模拟结果开发了一个程序。田口 L9 实验设计用于研究焊接样品的机械性能与峰值载荷、失效模式和能量的函数关系。研究结果表明，接头断裂模式和强度受工艺参数的显着影响。因此，焊接电流、电极力和焊接时间均对IN-625合金点焊接头的剪切强度有显着影响，影响分别为62.05%、24.06%和12.84%。