三代核电接管安全端异种金属焊接接头的显微表征

丁杰, 张志明, 王俭秋, 韩恩厚, 唐伟宝, 张茂龙, 孙志远

MICRO-CHARACTERIZATION OF DISSIMILAR METAL WELD JOINT FOR CONNECTING PIPE- NOZZLE TO SAFE-END IN GENERATION III NUCLEAR POWER PLANT

DING Jie, ZHANG Zhiming, WANG Jianqiu, HAN En-Hou, TANG Weibao, ZHANG Maolong, SUN Zhiyuan

表1 异种金属焊接件各部分材料的主要合金元素含量

Table 1 Main chemical compositions of different materials in the dissimilar metal weld joint (DMWJ)

Material Cr Ni Mo Mn Si Cu Ti Nb C Fe 316L 17.60 12.42 2.69 1.62 0.65 0.080 - <0.04 0.028 Bal. A508 0.14 0.88 0.52 1.39 0.25 0.030 - - 0.220 Bal. 52Mw 29.52 59.19 0.03 0.78 0.11 0.024 0.20 0.86 0.008 9.03 52Mb 29.70 59.25 0.01 0.82 0.12 0.025 0.22 0.81 0.008 8.88