不锈钢堆焊层稀释率对核电接管安全端试环焊接接头组织和力学性能的影响

张茂龙, 鲁艳红, 陈胜虎, 戎利建, 陆皓

Effect of Dilution Ratio of the First 309L Cladding Layer on the Microstructure and Mechanical Properties of Weld Joint of Connecting Pipe-Nozzle to Safe-End in Nuclear Power Plant

ZHANG Maolong, LU Yanhong, CHEN Shenghu, RONG Lijian, LU Hao

表1 接管安全端焊接试环件中各部分材料的化学成分 (mass fraciton / %)

Table 1 Chemical compositions of each material in the safe-end joint

Material C Si Mn P S Ni Cr Mo Cu Co Al Ti N Fe SA508 0.210 0.22 1.35 0.004 0.003 0.87 0.21 - 0.04 - 0.02 - 0.01 Bal. 316LN 0.014 0.38 1.10 0.024 0.004 11.2 16.2 2.13 - 0.01 - - 0.11 Bal. EQ309L 0.012 0.37 1.63 0.013 0.003 13.2 24.0 0.06 0.03 0.04 - 0.007 0.04 Bal. EQ308L 0.012 0.34 1.63 0.013 0.003 10.1 20.6 0.09 0.03 0.04 - 0.006 0.04 Bal. ERNiCrFe-7 0.024 0.16 0.24 0.003 0.001 60.4 28.9 0.01 0.01 <0.01 0.7 0.5 0.01 9.09