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2 2种SAW工艺制备接管安全端试环中309L堆焊层的合金元素含量及稀释率

Table 2 Alloy element contents of 309L cladding layer of weld joints of S1 and S2 and their calculated dilution ratios

Weld joint

Mass fraction of element / %

Dilution ratio

[Ni]

[Cr]

0.076

0.57

1.38

8.81

15.72

11.78

16.58

0.091

0.51

1.33

7.86

13.69

11.26

14.46