Study on the Corrosion Behavior of Resistance Spot Welded Dissimilar 2195/5A06 Joints

被引:2
|
作者
Yang, Yue [1 ]
Li, Yang [1 ]
Bi, Jing [2 ]
Liu, Hanwei [2 ]
Ao, Sansan [1 ]
Luo, Zhen [1 ]
机构
[1] Tianjin Univ, Sch Mat Sci & Engn, Tianjin 300350, Peoples R China
[2] Tianjin Long March Launch Vehicle Mfg Co Ltd, Tianjin 300462, Peoples R China
基金
中国国家自然科学基金;
关键词
Al-Li alloys; intergranular corrosion; microstructure; pitting corrosion; resistance spot welding; ALUMINUM-ALLOY; PITTING CORROSION; AGING TREATMENT; LI ALLOYS; MICROSTRUCTURE; MECHANISM;
D O I
10.1007/s11665-022-07272-8
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
Four-mm-thick AA2195-T8 aluminum-lithium (Al-Li) alloy and 2 mm thick 5A06 aluminum (Al) alloy were welded by resistance spot welding. Microstructure observation showed that the fusion zone was composed of all equiaxed spherical grains, and theta ' (Al2Cu) phases precipitated were mainly distributed at the grain boundary. The corrosion behavior of resistance spot welded 2195 Al-Li alloy and 5A06 alloy joints was revealed via immersion corrosion and electrochemical corrosion. The immersion test showed that the corrosion behavior of the heat-affected zone of 5A06 and fusion zone was pitting corrosion and intergranular corrosion, other regions of the joint were mainly pitting corrosion. It was found that the oxygen content of fusion zone increased with increasing immersion time. In addition, the oxide film initially formed and finally broken, which resulted from the potential difference between the Al matrix and the grain boundaries. The electrochemical corrosion results showed that the fusion zone exhibited the highest corrosion current density. The higher corrosion rate and corrosion depth of the fusion zone were correlated with Cu element segregation at the grain boundary.
引用
收藏
页码:3114 / 3128
页数:15
相关论文
共 50 条
  • [31] A comparative study of technical aspects of resistance spot brazed and resistance spot welded joints
    Vardanjani, Mehdi Jafari
    WELDING INTERNATIONAL, 2022, 36 (04) : 208 - 219
  • [32] Study on the Corrosion Resistance of Welded-Brazed Joints
    Dana, Dragos
    Sandu, Ioan Gabriel
    Vizureanu, Petrica
    Sandu, Ion
    REVISTA DE CHIMIE, 2013, 64 (12): : 1465 - 1467
  • [33] Investigations on Resistance Behavior at the Interface of Ultrasonically Welded Dissimilar Al/Cu Joints
    Raj, N. Mohan
    Kumaraswamidhas, L. A.
    Vendan, S. Arungalai
    Nalajam, Pavan Kumar
    SILICON, 2019, 11 (04) : 1717 - 1723
  • [34] Investigations on Resistance Behavior at the Interface of Ultrasonically Welded Dissimilar Al/Cu Joints
    N. Mohan Raj
    L. A. Kumaraswamidhas
    S. Arungalai Vendan
    Pavan Kumar Nalajam
    Silicon, 2019, 11 : 1717 - 1723
  • [35] Corrosion behavior of aluminum/steel dissimilar metal welded joints and influential factors: A review
    Xu, Hao
    Cao, Rui
    Fan, Ding
    Hanjie Xuebao/Transactions of the China Welding Institution, 2024, 45 (07): : 116 - 128
  • [36] Microstructure evolution and corrosion behavior of dissimilar 304/430 stainless steel welded joints
    Wang, Caimei
    Yu, Yang
    Yu, Jianxing
    Zhang, Yu
    Zhao, Yan
    Yuan, Qiwei
    JOURNAL OF MANUFACTURING PROCESSES, 2020, 50 (50) : 183 - 191
  • [37] Microstructure and Properties of Resistance Spot Welded Joints of Ni Interlayer Magnesium/Titanium Dissimilar Materials
    Tan Q.
    Deng L.
    Yi R.
    Cheng D.
    Li D.
    Cailiao Daobao/Materials Reports, 2023, 37 (07):
  • [38] Study on corrosion behavior and mechanism of 5A06 aluminum alloy in N2O4 medium
    Yao, Xiuquan
    Wen, Lei
    Yu, Zhigang
    Guo, Wei
    Huang, Feifei
    Qiang, Yujie
    Jin, Ying
    JOURNAL OF ALLOYS AND COMPOUNDS, 2023, 931
  • [39] The role of the partial melting zone in the nugget growth process of unequal-thickness dissimilar aluminum alloy 2219/5A06 resistance spot welding
    Du, Huimin
    Bi, Jing
    Zhang, Yu
    Wu, Yudong
    Li, Yang
    Luo, Zhen
    JOURNAL OF MANUFACTURING PROCESSES, 2019, 45 : 304 - 311
  • [40] Nanoindentation Hardness Distribution and Strain Field and Fracture Evolution in Dissimilar Friction Stir-Welded AA 6061-AA 5A06 Aluminum Alloy Joints
    Peng, Guangjian
    Ma, Yi
    Hu, Jiangjiang
    Jiang, Weifeng
    Huan, Yong
    Chen, Zhitong
    Zhang, Taihua
    ADVANCES IN MATERIALS SCIENCE AND ENGINEERING, 2018, 2018