Influence of microstructure of CoCrNi medium entropy alloy on its corrosion behavior

Purpose The purpose of this paper is to reveal the effect of microstructure on the corrosion behavior of CoCrNi alloy in 3.5 Wt.% NaCl solution. Design/methodology/approach The as-cast CoCrNi alloy was prepared by arc melting, and the cold-rolled and annealed alloys were prepared by processing the a...

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Bibliographic Details
Published in:Anti-corrosion methods and materials 2023-11, Vol.70 (6), p.438-448
Main Authors: Shi, Junyu, Ling, Shengli, Kuang, Yinjie, Tong, Yonggang, Hu, Yongle, Deng, Dunying
Format: Article
Language:English
Subjects:
Alloys
Annealing
Casting alloys
Cold
Cold rolling
Corrosion
Corrosion effects
Corrosion potential
Corrosion resistance
Corrosion resistant alloys
Electric arc melting
Electrodes
Entropy
Mechanical properties
Medium entropy alloys
Microstructure
Morphology
Pitting (corrosion)
Sodium chloride
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Summary:Purpose The purpose of this paper is to reveal the effect of microstructure on the corrosion behavior of CoCrNi alloy in 3.5 Wt.% NaCl solution. Design/methodology/approach The as-cast CoCrNi alloy was prepared by arc melting, and the cold-rolled and annealed alloys were prepared by processing the as-cast alloy. Findings The experimental results showed that a protective passivation film was formed on the surfaces of these CoCrNi MEA, and the stability and compactness of alloys increased in the sequence of cold-rolled, as-cast and annealed CoCrNi alloys. The annealed CoCrNi alloys had the best pitting resistance. Originality/value This study proposes the effect of the microstructure of CoCrNi alloy on corrosion resistance.
ISSN:0003-5599
0003-5599
1758-4221
DOI:10.1108/ACMM-06-2023-2840