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Investigation on corrosion tendency behaviour of TA2 titanium alloy welded joints under flow scouring conditions using the array electrode method

Yingshuang Liu (School of Materials Science and Engineering, China University of Petroleum Huadong, Qingdao, China and State Key for Marine Corrosion and Protection, Luoyang Ship Material Research Institute, Qingdao, China)
Ran Liu (School of Materials Science and Engineering, China University of Petroleum Huadong, Qingdao, China and State Key for Marine Corrosion and Protection, Luoyang Ship Material Research Institute, Qingdao, China)
Dalei Zhang (School of Materials Science and Engineering, China University of Petroleum Huadong, Qingdao, China)
Shaohua Xing (State Key for Marine Corrosion and Protection, Luoyang Ship Material Research Institute, Qingdao, China)
Xiaohui Dou (School of Materials Science and Engineering, China University of Petroleum Huadong, Qingdao, China)
Xinwei Zhang (School of Materials Science and Engineering, China University of Petroleum Huadong, Qingdao, China)
Zonghao He (School of Materials Science and Engineering, China University of Petroleum Huadong, Qingdao, China)

Anti-Corrosion Methods and Materials

ISSN: 0003-5599

Article publication date: 29 August 2023

Issue publication date: 20 November 2023

53

Abstract

Purpose

The corrosion behaviour of titanium alloy surface when fluid with different flow rates flows through welded joints with different residual heights was explored.

Design/methodology/approach

The experiment uses a combination of array electrodes and simulation.

Findings

It is found that when the weld reinforcement exists, the corrosion tendency of both ends of the weld metal is greater than that of other parts of the welded joint due to the influence of high turbulence kinetic energy and shear stress. The presence of weld reinforcement heights makes the fluid behind it fluctuate greatly. The passivation films of both the base metal (BM) at the rear and the heat-affected zone (HAZ) are more prone to corrosion than those of the front BM and HAZ, and the passivation film is rougher.

Originality/value

The combination of test and simulation was used to explore the influence of electrochemical and hydrodynamic factors on the corrosion behaviour of titanium alloy-welded joints when welding residual height existed.

Keywords

Acknowledgements

The authors greatly acknowledge the financial support from the National Natural Science Foundation of China (Grant No. 42176209), the Natural Science Foundation of Shandong Province (Grant No. ZR2021MD064) and the Fundamental Research Funds for the Central Universities (Grant No. 19CX05001A).

Citation

Liu, Y., Liu, R., Zhang, D., Xing, S., Dou, X., Zhang, X. and He, Z. (2023), "Investigation on corrosion tendency behaviour of TA2 titanium alloy welded joints under flow scouring conditions using the array electrode method", Anti-Corrosion Methods and Materials, Vol. 70 No. 6, pp. 376-392. https://doi.org/10.1108/ACMM-04-2023-2782

Publisher

:

Emerald Publishing Limited

Copyright © 2023, Emerald Publishing Limited

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