Residual stress controlling is crucial for the service security of weldments. In this work, experimental measurements and finite element method were integrated to study the influence of welding sequence imposed on residual stress distribution of Incoloy825/X52 bimetallic clad plate joints. And the residual stress evolution law inside bimetallic clad plate joints during multi-layer and multi-pass welding was clarified. Results showed that the highest residual stress concentration was always generated in the translation layer and its surrounding region once the base, transition and flyer seam layer were all finished welding no matter what sequence was adopted. Welding sequence did have a significant influence on peak value and areas of both internal and surficial high-stress region of bimetallic clad plate joint.

残余应力控制对于焊件的使用安全至关重要。在这项工作中，结合实验测量和有限元方法，研究了焊接顺序对Incoloy825/X52双金属复合板接头残余应力分布的影响。阐明了多层多道焊双金属复合板接头内部残余应力的演变规律。结果表明，无论采用何种顺序焊接，一旦基底层、过渡层和飞边焊缝层均完成焊接，平移层及其周围区域产生的残余应力集中度最高。焊接顺序确实对双金属复合板接头内部和表面高应力区域的峰值和面积有显着影响。