Corrosion resistance of additively manufactured titanium alloys in hydrochloric acid

Keywords

titanium alloys, additive manufacturing, electron beam melting, corrosion resistance, electrochemical characteristics.

Cite as

Lavrys S. M., Pohrelyuk I. M., and Shliakhetka Kh. S. Corrosion resistance of additively manufactured titanium alloys in hydrochloric acid. Physico­chemical Mechanics of Materials. 2022. 58(5), 023-029.

Abstract

A comparative assessment of the corrosion resistance of a and near a VT1-0 and VT20 (Ti–Al–Mo–V–Zr) titanium alloys, respectively, obtained by traditional technology (TT) and additive manufacturing (AM) was carried out. AM technology was used to manufac­ture the studied titanium alloys by electron beam melting (EBM). It is shown that tita­nium alloys obtained by AM have lower corrosion resistance in 20 wt% hydrochloric acid than alloys obtained by TT. The relationship between corrosion resistance and the micro­structure of alloys fabricated by different technologies were established. Namely, corrosion resistance deterioration of additively manufactured α and near α titanium alloys is explained by the formation during EBM of a metastable Widmanstatten and martensitic structure.

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