反应堆压力容器法兰密封面材料的性能研究

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Study on Performance of Novel Overlaying Welding Materials on the Sealing Face of RPV

INational Key Laboratory for Nuclear Fuel and Materials, Nuclear Power Institute of China, Chengdu, 610041, China

摘要: 采用手工惰性气体钨极保护焊(TIG焊)制备反应堆压力容器密封面材料E308LMoT0-3、E309LMoT0-3及对比材料ER308 L的不锈钢堆焊层,对其进行硬度测试、显微组织观察、抗晶间腐蚀性能分析,以及点蚀点位测量和偏离水质条件下的局部腐蚀试验,研究E308LMoT0-3、E309LMoT0-3堆焊材料的点腐蚀和缝隙腐蚀性能以及腐蚀机理。试验结果表明,E308LMoT0-3、E309LMoT0-3焊丝堆焊后的试样除了具有良好的硬度、耐晶间腐蚀性能外,还具有良好的耐局部腐蚀性能,可以代替目前压水堆核电厂普遍使用的ER308L不锈钢堆焊材料。
- 反应堆压力容器 /
- 密封面 /
- 堆焊 /
- 腐蚀性能
Abstract: Compared with E308L,the hardness,microscopic structure and intergranular corrosion resistance of E308LMoT0-3 and E309LMoT0-3,which are selected as the novel overlaying welding materials on the sealing face of RPV,were investigated.Meanwhile,the pitting potential and the pit corrosion and crevice corrosion resistance of the materials were also tested under the condition of water deviating.The results show that the corrosion resistance of the E308LMoT0-3 and E309LMoT0-3 are better than that of E308L.And the results could also provide reference for the material selection of the remedy and design of the overlaying welding on the sealing face of RPV.
- RPV /
- Sealing face /
- Depositing /
- Corrosion resistance