高级检索

核电汽轮机焊接转子接头在氯离子环境中的电偶腐蚀行为

欧阳玉清, 黄毓晖, 翁硕, 轩福贞

欧阳玉清, 黄毓晖, 翁硕, 轩福贞. 核电汽轮机焊接转子接头在氯离子环境中的电偶腐蚀行为[J]. 焊接学报, 2019, 40(6): 153-160. DOI: 10.12073/j.hjxb.2019400171
引用本文: 欧阳玉清, 黄毓晖, 翁硕, 轩福贞. 核电汽轮机焊接转子接头在氯离子环境中的电偶腐蚀行为[J]. 焊接学报, 2019, 40(6): 153-160. DOI: 10.12073/j.hjxb.2019400171
shu
OUYANG Yuqing, HUANG Yuhui, WENG Shuo, XUAN Fuzhen. Galvanic corrosion behavior of nuclear steam turbine welded joint in chloride environment[J]. TRANSACTIONS OF THE CHINA WELDING INSTITUTION, 2019, 40(6): 153-160. DOI: 10.12073/j.hjxb.2019400171
Citation: OUYANG Yuqing, HUANG Yuhui, WENG Shuo, XUAN Fuzhen. Galvanic corrosion behavior of nuclear steam turbine welded joint in chloride environment[J]. TRANSACTIONS OF THE CHINA WELDING INSTITUTION, 2019, 40(6): 153-160. DOI: 10.12073/j.hjxb.2019400171
shu

核电汽轮机焊接转子接头在氯离子环境中的电偶腐蚀行为

  • 华东理工大学 承压系统与安全教育部重点试验室, 上海 200030

基金项目: 国家自然科学基金资助项目（51875202）；上海市自然科学基金资助项目（16ZR1408300）

Galvanic corrosion behavior of nuclear steam turbine welded joint in chloride environment

  • Key Laboratory of Pressure Systems and Safety, Ministry of Education, East China University of Science and Technology, Shanghai 200030, China

摘要

    摘要
  • 摘要: 为了研究焊接接头的尺寸效应对焊接接头的电偶腐蚀行为的影响，采用宏观电化学、微区电化学（SVET）、浸泡试验等试验研究了25Cr2Ni2MoV转子钢焊接接头在氯离子溶液中的电偶腐蚀行为.结果表明，焊缝的腐蚀电位最低，腐蚀电流密度最大，焊缝区作为阳极优先发生腐蚀，而母材和热影响区作为阴极区被保护.进一步运用三维形貌仪（IFM）和扫描电镜（SEM）观察腐蚀表面形貌，发现随着焊接接头尺寸的增加电偶腐蚀效应更显著，但是当接头尺寸增大到一定程度后，电偶腐蚀效应又有所减弱.
    Abstract: To investigate the effect of geometry of welded joint on the galvanic corrosion behavior, the macroscopic electrochemical experiments, scanning vibrating electrode technique (SVET) and immersion tests were used to study the galvanic corrosion behavior of welded joint of 25Cr2Ni2MoV rotor steel in the chloride solution. The results indicate that the corrosion potential of the WM is the lowest and the corrosion current density is the highest. That is to say, the WM is the anodic region which is prior to be corroded while the BM and the HAZ are the cathodic region which are protected. The infinite focus microscope (IFM) and scanning electron microscope (SEM) were used to further observe the morphology of the specimen surfaces. It is found that the effect of galvanic corrosion is more significant with the increase of welded joint size, but when the joint size increases to a certain extent, the galvanic corrosion effect is weakened.
    • HTML全文
    • 参考文献(21)
  • [1] 乔尚飞,沈红卫,刘霞,等.窄间隙焊接技术在600 MW汽轮机低压转子上的应用[J].热力透平, 2008, 37(4):250-252 Qiao Shangfei, Shen Hongwei, Liu Xia, et al. Application of narrow gap welding technology on low pressure rotor of 600 MW steam turbine[J]. Thermal Turbine, 2008, 37(4):250-252
    [2] 王朋,霍鑫,丁玉明.核电汽轮机焊接转子技术发展综述[J].热力透平, 2015, 44(4):296-299 Wang Peng, Huo Xin, Ding Yuming. A summary of the development of the welding rotor technology for nuclear steam turbine[J]. Thermal Turbine, 2015, 44(4):296-299
    [3] Yin Z F, Yan M L, BaiI Z Q, et al. Galvanic corrosion associated with SM 80SS steel and Ni-based alloy G3 couples in NaCl solution[J]. Electrochimica Acta, 2008, 53(22):6285-6292.
    [4] 李维锋,孙紫麾,陈英,等.碳钢管线焊接接头的电偶腐蚀行为研究[J].焊接技术, 2016, 46(7):19-21 Li Weifeng, Sun Zihui, Chen Ying, et al. Study on galvanic corrosion behavior of welded joint of carbon steel pipeline[J]. Welding Technology, 2016, 46(7):19-21
    [5] Wei J S, Qi Y C, Tian Z L. Corrosion behavior of welded joints for cargo oil tanks of crude oil carrier[J]. Journal of Iron And Steel Research, International, 2016, 23(9):955-962.
    [6] Song G, Johannesson B, Hapugoda S, et al. Galvanic corrosion of magnesium alloy AZ91D in contact with an aluminium alloy, steel and zinc[J]. Corrosion Science, 2004, 46(4):955-977.
    [7] Oh S K, Kim Y J, Jung K M, et al. Effects of temperature and operation parameters on the galvanic corrosion of Cu coupled to Au in organic solderability preservatives process[J]. Metals and Materials International, 2017, 23(2):290-297.
    [8] Hasan B O. Galvanic corrosion of carbon steel-brass couple in chloride containing water and the effect of different parameters[J]. Journal of Petroleum Science and Engineering, 2014, 124:137-145.
    [9] Luo L H, Huang Y H, Weng S, et al. Mechanism-related modelling of pit evaluation in the CrNiMoV steel in simulated environment of low pressure nuclear steam turbine[J]. Materials and Design, 2016, 105:240-250.
    [10] Weng S, Huang Y H, Xuan F Z. Correlation between Microstructures, Hardness and Corrosion of Welded Joints of Disc Rotors[C]//14th International Conference On Pressure Vessel Technology. Shanghai:Procedia Engineering, 2015:1761− 1769.
    [11] Coelho L B, Mouanga M, Druart M E, et al. A SVET study of the inhibitive effects of benzotriazole and cerium chloride solely and combined on an aluminium/copper galvanic coupling model[J]. Corrosion Science, 2016, 110:143-156.
    [12] Zhu J, Xu L, Feng Z, et al. Galvanic corrosion of a welded joint in 3Cr low alloy pipeline steel[J]. Corrosion Science, 2016, 111:391-403.
    [13] Zhu M L, Xuan F Z. Correlation between microstructure, hardness and strength in HAZ of dissimilar welds of rotor steels[J]. Materials Science and Engineering A, 2010, 527:4035-4042.
    [14] Li Y T, Du Z Y, Tao Y Y. Effect of Mn and MnS on corrosion properties of domestic pipeline steels and welds[J]. China Welding, 2004, 13(2):123-127.
    [15] 谢建平,李颖,王书强.化学成分对不锈钢在5% H2SO4溶液中均匀腐蚀性能的影响[J].铸造技术, 2017, 38(4):823-825 Xie Jianping, Li Ying, Wang Shuqiang. The effect of chemical components on the uniform corrosion of stainless steel in 5% H2SO4 solution[J]. Foundry Engineering, 2017, 38(4):823-825
    [16] Garcia C, MartinN F, Tiedra P D, et al. Pitting corrosion of welded joints of austenitic stainless steels studied by using an electrochemical minicell[J]. Corrosion Science, 2008, 50(4):1184-1194.
    [17] 徐连勇,亢朝阳,路永新,等.碳钢焊接接头腐蚀行为分析[J].焊接学报, 2018, 39(1):97-101 Xu Lianyong, Kang Chaoyang, Lu Yongxin, et al. Analysis of corrosion behavior of carbon steel weld joint[J]. Transactions of the China Welding Institution, 2018, 39(1):97-101
    [18] 曹楚南.腐蚀电化学原理[M].北京:化学工业出版社, 2008.
    [19] Stenta A, Basco S, Smith A, et al. One-dimensional approach to modeling damage evolution in galvanic corrosion[J]. Corrosion Science, 2014, 88(6):36-48.
    [20] 郝献超,苏鹏,肖葵,等.不同NaCl浓度对耐候钢腐蚀产物的影响[J].腐蚀与防护, 2009, 30(5):297-299 Hao Xianchao, Su Peng, Xiao Kui, et al. Effect of different concentration of NaCl solution on corrosion products of weathering steel[J]. Corrosion Protection, 2009, 30(5):297-299
    [21] 王建军,郭小丹,郑文龙,等.海洋大气暴露3年的碳钢与耐候钢表面锈层分析[J].腐蚀与防护, 2002, 23(7):288-291 Wang Jianjun, Guo Xiaodan, Zheng Wenlong, et al. Analysis of surface rust layer on carbon steel and weathering steel exposed to ocean atmosphere for 3 years[J]. Corrosion Protection, 2002, 23(7):288-291
    • 相关文章
    • 施引文献(8)

  • 期刊类型引用(5)

    1. 王通，孟惠民，葛鹏飞，李全德，巩秀芳，倪荣，姜英，龚显龙，戴君，隆彬. 2Cr-1Ni-1.2Mo-0.2V钢在NH_4H_2PO_4溶液中的电化学腐蚀行为研究. 中国腐蚀与防护学报. 2022(04): 551-562 . 百度学术
    2. 苍雨，黄毓晖，翁硕，轩福贞. 环境变量对核电汽轮机转子钢焊接接头电偶腐蚀性能的影响. 中国腐蚀与防护学报. 2021(03): 318-326 . 百度学术
    3. 黄毓晖，张建辉，胡语林，孙雯暄，徐宇斌，汪毅豪. 核电汽轮机转子堆焊焊接接头的电偶腐蚀行为及有限元仿真. 焊接学报. 2021(08): 33-39+99 . 本站查看
    4. 陈君，康凯，冯钜，熊长奇，曹丹，尹杰. 压水堆核电站结构材料的腐蚀行为研究进展. 西华大学学报(自然科学版). 2020(03): 104-112 . 百度学术
    5. 黄毓晖，司晓法，翁硕，轩福贞. 疲劳损伤对核电汽轮机焊接转子接头应力腐蚀开裂敏感性的影响. 焊接学报. 2020(04): 12-19+37+97-98 . 本站查看

    其他类型引用(3)

    • 资源附件(0)
计量
  • 文章访问数:  382
  • HTML全文浏览量:  19
  • PDF下载量:  58
  • 被引次数: 8
出版历程
  • 收稿日期:  2018-03-09

目录

摘要
HTML全文
    参考文献(21)
    相关文章
    施引文献
    资源附件(0)

    /

    返回文章
    返回

    网站版权 © 焊接杂志社焊接学报编辑部电话：0451-86323218地址：哈尔滨市松北区创新路2077号

    本系统由 北京仁和汇智信息技术有限公司 开发  百度统计