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Article

Effect of Solution Temperature on Corrosion Behavior of Ti-6Al-4Zr-3Nb-1.1Mo-1Sn-1V Alloy in Hydrochloric Acid Solution

by
Chengliang Mao
*,
Siyuan Zhang
,
Silan Li
,
Jialu Wang
,
Qian Li
* and
Weiju Jia
*
Northwest Institute for Nonferrous Metal Research, Xi’an 710016, China
*
Authors to whom correspondence should be addressed.
Materials 2026, 19(1), 47; https://doi.org/10.3390/ma19010047
Submission received: 31 October 2025 / Revised: 4 December 2025 / Accepted: 18 December 2025 / Published: 22 December 2025
(This article belongs to the Section Corrosion)
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Abstract

Ti-6Al-4Zr-3Nb-1.1Mo-1Sn-1V (Ti90) alloy is widely used in marine engineering and oil and gas extraction due to its excellent strength, impact toughness, and corrosion resistance. The corrosion behavior of Ti90 alloy after solution treatment at 750 °C, 900 °C, 940 °C, and 960 °C in 5 M hydrochloric acid (HCl) solution was investigated using open-circuit potential (OCP), potentiodynamic polarization, electrochemical impedance spectroscopy (EIS), static immersion tests, and surface characterization. The results of electrochemical tests indicate that the corrosion resistance of Ti90 alloy increases with rising solid solution temperature. The static immersion tests show that the variation trend of the annual corrosion rate at different solid solution temperatures in 5 M HCl solution is consistent with the electrochemical test results. The corrosion morphology of Ti90 alloy reveals that the α phase is more prone to decomposition than the β phase. The corrosion behavior of Ti90 alloy in 5 M HCl solution is mainly influenced by the volume fraction of the β phase and the size of the α phase.
Keywords: titanium alloy; microstructure; electrochemical techniques; corrosion behavior titanium alloy; microstructure; electrochemical techniques; corrosion behavior
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MDPI and ACS Style

Mao, C.; Zhang, S.; Li, S.; Wang, J.; Li, Q.; Jia, W. Effect of Solution Temperature on Corrosion Behavior of Ti-6Al-4Zr-3Nb-1.1Mo-1Sn-1V Alloy in Hydrochloric Acid Solution. Materials 2026, 19, 47. https://doi.org/10.3390/ma19010047

AMA Style

Mao C, Zhang S, Li S, Wang J, Li Q, Jia W. Effect of Solution Temperature on Corrosion Behavior of Ti-6Al-4Zr-3Nb-1.1Mo-1Sn-1V Alloy in Hydrochloric Acid Solution. Materials. 2026; 19(1):47. https://doi.org/10.3390/ma19010047

Chicago/Turabian Style

Mao, Chengliang, Siyuan Zhang, Silan Li, Jialu Wang, Qian Li, and Weiju Jia. 2026. "Effect of Solution Temperature on Corrosion Behavior of Ti-6Al-4Zr-3Nb-1.1Mo-1Sn-1V Alloy in Hydrochloric Acid Solution" Materials 19, no. 1: 47. https://doi.org/10.3390/ma19010047

APA Style

Mao, C., Zhang, S., Li, S., Wang, J., Li, Q., & Jia, W. (2026). Effect of Solution Temperature on Corrosion Behavior of Ti-6Al-4Zr-3Nb-1.1Mo-1Sn-1V Alloy in Hydrochloric Acid Solution. Materials, 19(1), 47. https://doi.org/10.3390/ma19010047

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