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Study on corrosion fatigue behavior and mechanism of 6005A aluminum alloy and welded joint

Xiaoguang Sun (Institute for Advanced Materials and Technology, University of Science and Technology Beijing, Beijing, China and CRRC Qingdao Sifang Rolling Stock Research Institute Co Ltd, Qingdao, China)
Xuexu Xu (Institute for Advanced Materials and Technology, University of Science and Technology Beijing, Beijing, China)
Zihan Wang (Institute for Advanced Materials and Technology, University of Science and Technology Beijing, Beijing, China)
Zhiyong Liu (Institute for Advanced Materials and Technology, University of Science and Technology Beijing, Beijing, China)

Anti-Corrosion Methods and Materials

ISSN: 0003-5599

Article publication date: 26 July 2021

Issue publication date: 19 August 2021

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Abstract

Purpose

The purpose of this paper is to determine the corrosion fatigue behavior and mechanism of 6005A aluminum alloy and welded joint.

Design/methodology/approach

Electron back-scattered diffraction (EBSD) were adopted to characterize the microstructure of 6005A aluminum alloy and welded joint. Through potentiodynamic polarization, electrochemical impedance spectroscopy (EIS) and corrosion fatigue experiments, the corrosion fatigue behavior and mechanism of 6005A aluminum alloy base metal and welded joint were studied.

Findings

The results show that the corrosion fatigue crack initiation of 6005A aluminum alloy base metal and welded joint is mainly caused by the preferential anodic dissolution and hydrogen concentration in the areas with inclusions and welding defects.

Originality/value

The research is an originality study on the corrosion fatigue behavior and mechanism of 6005A aluminum alloy and welded joint.

Keywords

Acknowledgements

The authors gratefully acknowledge financial support of the National Natural Science Foundation of China (Nos. 52071017 and 51871024) and the National Key Research and Development Program (2017YFB0702300). The authors are grateful for helpful editing by Editor Li Tianya.

Xiaoguang Sun, as the first author of the work, mainly contributes the draft of the work and interpretation of data for the work.

Xuexu Xu, as the correspondent of the work, mainly contributed in writing – review & editing, and the conception or design of the work, and also revised the work according to the reviewer’s comments.

Zihan Wang is one of the conception or design of the work and also contributed in acquisition part of the data for the work.

Zhiyong Liu as a correspondent of the work, mainly contributed in writing – review & editing, and the conception or design of the work, and also revises the work according to the reviewer’s comments.

All the authors in this work have made an approval of the version to be published and an agreement to be accountable for all aspects of the work.

Citation

Sun, X., Xu, X., Wang, Z. and Liu, Z. (2021), "Study on corrosion fatigue behavior and mechanism of 6005A aluminum alloy and welded joint", Anti-Corrosion Methods and Materials, Vol. 68 No. 4, pp. 302-309. https://doi.org/10.1108/ACMM-04-2021-2471

Publisher

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Emerald Publishing Limited

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