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Correlation of strain path and crystallographic texture with electrochemical behavior of Ti-15V-3Cr-3Sn-3Al alloy

Gupta, A and Gupta, SK and Shukla, S and Mahadule, D and Khatirkar, RK (2023) Correlation of strain path and crystallographic texture with electrochemical behavior of Ti-15V-3Cr-3Sn-3Al alloy. In: Journal of Alloys and Compounds, 936 .

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Official URL: https://doi.org/10.1016/j.jallcom.2022.168252


Effect of strain path and crystallographic texture on electrochemical properties of cold-rolled Ti-15V-3Cr-3Sn-3Al (all elements in weight, designated as Ti-15333) alloy has been studied in the present investigation. The as-received specimens with and without solution annealing (SA) were subjected to different strain paths to reduction ratio (RR) of 40 and 80. The microstructure showed the presence of shear bands (SBs) in all the deformed specimens and its fraction increased with increase in the RR. With the increase in deformation, α- and γ- fibers were observed in all the specimens. Electrochemical potentio-dynamic tests followed by open circuit voltage were used to investigate the passivity and pitting corrosion in 3.5 NaCl solution for both the undeformed (as-received, SA) and deformed Ti-15333 alloy specimens. A complementary assessment was employed to analyze the influence of work-hardening on passivity and pitting corrosion behaviors of Ti-15333 alloy systematically, combined with additional investigation of electrochemical impedance spectroscopy (EIS). High corrosion resistance was observed for the SA specimen than non-SA (as-received) specimen. Increase in the RR from 40 to 80 increased the corrosion rate for all the strain paths, except multi-step cross-rolled (MSCR). Corrosion resistance of the 80 deformed specimens were dependent on both the evolved microstructure (SBs, grain fragmentation) as well as crystallographic texture. Multi-step cross rolling resulted in the formation of a strong Rotated Cube (100<110>) texture, which was expected to be the reason for its enhanced corrosion resistance. © 2022 Elsevier B.V.

Item Type: Journal Article
Publication: Journal of Alloys and Compounds
Publisher: Elsevier Ltd
Additional Information: The copyright for this article belongs to Elsevier.
Keywords: Cold rolling; Corrosion; EIS; Shear bands; Texture; β-Ti
Department/Centre: Division of Chemical Sciences > Organic Chemistry
Date Deposited: 16 Jan 2023 07:06
Last Modified: 16 Jan 2023 07:06
URI: https://eprints.iisc.ac.in/id/eprint/79176

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