为了推进从俄罗斯引进的田湾VVER-1000型核电站用Zr-1Nb合金燃料包壳和端塞棒材的国产化进程,研究了焊接及随后的真空热处理对Zr-1Nb合金抗360℃,18.6MPa水和500℃,10.3MPa蒸汽腐蚀性能的影响。实验结果表明焊接严重恶化Zr-1Nb合金在2种介质中的腐蚀抗力,主要是因为焊区中出现了粗大的马氏体组织;随后的真空退火对腐蚀抗力的影响取决于退火温度和腐蚀实验温度。但即使在最佳温度退火也不能使焊接态的腐蚀抗力恢复到非焊接态的水平。 In order to promote the localization process of Zr-1Nb alloy fuel cladding and end-plug rods imported from Russia at Tianwan VVER-1000 nuclear power station, the effects of welding and subsequent vacuum heat treatment on the corrosion resistance of Zr-1Nb alloy at 360 ℃, 18.6MPa Water and 500 ℃, 10.3MPa steam corrosion performance. The experimental results show that the corrosion resistance of Zr-1Nb alloy in two kinds of media is seriously deteriorated by the welding, which is mainly caused by the coarse martensite in the weld zone. The effect of subsequent vacuum annealing on the corrosion resistance depends on the annealing temperature and corrosion test temperature. However, even at the optimum temperature, the corrosion resistance in the soldered state can not be restored to the non-soldered state.