The interface carbon diffusion,mechanical properties of joints and thermal stress on the interface area have been investigated by means of creep rupture tests,EPMA analysis.

• 为提高电站锅炉过热器铁素体-奥氏体异种钢焊接接头的高温蠕变断裂强度和延长服役寿命，设计了用专用镍基填充材料焊接的不锈钢-镍基焊缝-耐热钢三元组合接头。