Improved corrosion behaviour of electron beam melted Ti-6Al–4V alloy in phosphate buffered saline

Abstract

The electrochemical corrosion behaviour of Ti-6Al–4V prepared by electron beam melting was investigated in phosphate buffered saline and compared with those of traditional wrought counterpart. Electrochemical results showed EBM-produced Ti-6Al–4V possesses slightly better corrosion resistance than the wrought Ti-6Al–4V, which is attributed to larger proportions of β phase and ultrafine-grained lamellar α/β phases in the microstructure of EBM-produced Ti-6Al–4V. The β phase enhances the resistance of charge transfer, thereby reducing the rate of metal dissolving reaction; while the α/β phases result in homogenous distribution of alloying elements in different phases thus restraining the galvanic effect between α and β phases.

Document Type

Journal Article

Date of Publication

2017

Publication Title

Corrosion Science

Publisher

Elsevier

School

School of Engineering

RAS ID

24699

Comments

Bai, Y., Gai, X., Li, S., Zhang, L. C., Liu, Y., Hao, Y., . . . Gao, Y. (2017). Improved corrosion behaviour of electron beam melted Ti-6Al–4V alloy in phosphate buffered saline. Corrosion Science, 123, 289-296. https://doi.org/10.1016/j.corsci.2017.05.003

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Link to publisher version (DOI)

10.1016/j.corsci.2017.05.003