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Liu et al. Microstructures 2023;3:2023020 https://dx.doi.org/10.20517/microstructures.2023.02 Page 23 of 27

law of more than two elements in pitting corrosion still needs to be explored. Therefore, it is necessary to
use electrochemical corrosion combined with a pitting corrosion model to study this.

(4) Studies on the EAC of duplex stainless steels are not sufficient compared to the proportion of failures it
has caused. The apparent regularity and microstructural mechanism of alloying elements on EAC are still
unclear. Therefore, materials computing, metallurgy and electrochemistry should be used to study this and
propose theoretical models.

(5) Duplex stainless steels are increasingly being used in a variety of applications. Therefore, it is necessary
to study their corrosion behavior and mechanisms in more practical applications. Based on this, new types
of corrosion-resistant, economical and high-strength duplex stainless steels should be developed.

DECLARATIONS
Authors’ contributions
Made substantial contributions to the conception and design of the study and performed data acquisition,
data analysis and interpretation: Liu M
Provided administrative and technical support: Du C, Liu Z, Li X, Wang L
Performed data acquisition: Zhong R, Cheng X, Ao J, Duan T, Zhu Y

Availability of data and materials
Not applicable.

Financial support and sponsorship
None.

Conflicts of interest
All authors declared that there are no conflicts of interest.

Ethical approval and consent to participate
Not applicable.

Consent for publication
Not applicable.

Copyright
© The Author(s) 2023.

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