Corrosion and protection of friction stir welding of magnesium alloy
Anti-Corrosion Methods and Materials
ISSN: 0003-5599
Article publication date: 12 December 2023
Issue publication date: 2 January 2024
Abstract
Purpose
The high specific strength makes magnesium alloys have a wide range of applications in aerospace, military, automotive, marine and construction industries. However, its poor corrosion resistance and weldability have limited its development and application. Friction stir welding (FSW) can effectively avoid the defects of fusion welding. However, the microstructure, mechanical properties and corrosion behavior of FSW joints in magnesium alloys vary among different regions. The purpose of this paper is to review the corrosion of magnesium alloy FSW joints, and to summarize the protection technology of welded joints.
Design/methodology/approach
The corrosion of magnesium alloy FSW joints includes electrochemical corrosion and stress corrosion. This paper summarizes corrosion protection techniques for magnesium alloys FSW joints, focusing on composition, microstructure changes and surface treatment methods.
Findings
Currently, this research is mainly focused on enhancing the corrosion resistance of magnesium alloy FSW joints by changing compositions, structural modifications and surface coating technologies. Refinement of the grains can be achieved by adjusting welding process parameters, which in turn minimizes the effects of the second phase on the alloy’s corrosion resistance.
Originality/value
This paper presents a comprehensive review on the corrosion and protection of magnesium alloys FSW joints, covering the latest research advancements and practical applications. It aims to equip researchers with a better insight into the field and inspire new studies on this topic.
Keywords
Acknowledgements
The authors would like to thank the financial support from the the National Natural Science Foundation of China [grant number 51601073], the Jiangsu Provincial Natural Science Fund Research Project [grant number BK20211344], Jiangsu Provincial Six Talent Peaks [grant number 2018XCL-028].
Citation
Zhou, Z., Zheng, S., Chen, J., Zhang, T., He, Z. and Wang, Y. (2024), "Corrosion and protection of friction stir welding of magnesium alloy", Anti-Corrosion Methods and Materials, Vol. 71 No. 1, pp. 47-54. https://doi.org/10.1108/ACMM-07-2023-2853
Publisher
:Emerald Publishing Limited
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