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Published in:
Effects of Internal Oxidation Methods on Microstructures and Properties of Al2O3 Dispersion-Strengthened Copper Alloys Read chapter Read first chapter

2018 | OriginalPaper | Chapter

Effect of Zr Addition on Localized Corrosion Behavior of Al–Zn–Mg Alloy

Authors : S. D. Liu, W. R. Chai, Q. Wang, Q. L. Pan, A. D. Li, Y. L. Deng, X. M. Zhang

Published in: High Performance Structural Materials

Publisher: Springer Singapore

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Abstract

The effects of Zr addition on localized corrosion resistance of Al–Zn–Mg alloy were investigated by means of intergranular corrosion (IGC) immersion and exfoliation corrosion (EXCO) immersion tests. The mechanism was discussed based on microstructural characterization by optical microscopy (OM) and scanning transmission electron microscopy (STEM). The results showed that Al–Zn–Mg–Zr alloy exhibited a smaller intergranular corrosion depth and exfoliation corrosion depth than Al–Zn–Mg alloy. Zr inhibited recrystallization and refines grains. The subgrain boundaries could retard the propagation of corrosion. Compared with Al–Zn–Mg alloy, Al–Zn–Mg–Zr alloy has lower Zn and Mg content of the grain boundary precipitates and narrower precipitate free zone near grain boundaries.

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previous chapter Effect of Solution Treatment on the Microstructure and Fatigue Properties of 7050 Aluminum Alloy
next chapter Preparation and Corrosion Performance of Silane/Ce Films on 7N01 Aluminum Alloy
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Metadata
Title
Effect of Zr Addition on Localized Corrosion Behavior of Al–Zn–Mg Alloy
Authors
S. D. Liu
W. R. Chai
Q. Wang
Q. L. Pan
A. D. Li
Y. L. Deng
X. M. Zhang
Copyright Year
2018
Publisher
Springer Singapore
Book
High Performance Structural Materials

Print ISBN: 978-981-13-0103-2

Electronic ISBN: 978-981-13-0104-9

Copyright Year: 2018

DOI
https://doi.org/10.1007/978-981-13-0104-9_26

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