Tuning microstructure and improving the corrosion resistance of a Ti-6Al-3Nb-2Zr-1Mo alloy via solution and aging treatments

Baoxian Su, Binbin Wang, Liangshun Luo*, Liang Wang, Chen Liu, Yanqing Su*, Yanjin Xu, Haiguang Huang, Jingjie Guo, Hengzhi Fu, Yu Zou

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

15 Citations (Scopus)

Abstract

Herein, the influences of solution-aging treatments on the corrosion behaviors of a wrought Ti-6Al-3Nb-2Zr-1Mo alloy are investigated. The solution-aging treated alloys exhibit a better corrosion performance than the wrought alloy, stemming from the alleviated galvanic corrosion. In artificial seawater, all alloys display a spontaneous passivation behavior, and the oxygen reduction reaction (ORR), affected by diffusion and charge-transfer processes, performs as the prominent cathodic reaction. However, in 5 M HCl, the activation-passivation transition occurs, and the cathodic reaction is mainly related to the hydrogen evolution reaction (HER) controlled by the Volmer reaction. Furthermore, we illustrate the relevant ORR and HER mechanisms.

Original languageEnglish
Article number110694
JournalCorrosion Science
Volume208
DOIs
Publication statusPublished - Nov 2022
Externally publishedYes

Keywords

  • Corrosion behavior
  • Electrochemical analysis
  • Microstructure
  • Solution and aging treatments
  • Titanium

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