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异种钢接头是电站锅炉中的一个重要部件。本文应用热弹塑性有限元对１０２钢和３０４Ｈ钢管通过镍基合金填充材料焊接的异种钢接头的焊接残余应力场及经过退火后的残余应力场进行了数值计算，并应用全释放法对该焊接头进行了实测，计算结果与实测结果基本吻合。这些结果可供异种钢接头失效研究和其焊接工艺的制订时参考。
Heterogeneous steel joints are an important part of power plant boilers. In this paper, the welding residual stress field and residual stress field after annealed of 102 steel and 304H steel through the Ni-based alloy filler material welded by using the thermal elasto-plastic finite element method are numerically calculated, and the full release method is applied to the welding Head was measured, the calculated results and the measured results are basically consistent. These results can be used as a reference for the study of the failure of dissimilar steel joints and the formulation of their welding processes.