Modern Problems of Materials Science

Methods of Improving the Corrosion Resistance of an Additively Manufactured Titanium Alloy

Serhii Lavrys (lavrys92@gmail.com), Mariia-Olena Danyliak, Taras Gural

Karpenko Physico-Mechanical Institute of NAS of Ukraine

https://doi.org/10.15407/msse2023.114

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Keywords

Ti6Al4V, additive manufacturing, heat tretment, gas nitriding, corrosion resistance

Abstract

In this work, the effect of post-annealing or gas nitriding on corrosion resistance of addtively manufactured Ti6Al4V titanium alloy in a hydrochloric acid solution was studied by comparing it with a conversational manufactured one (wrought). As AM was chosen selective laser melting method which performed by 3DMetalTech company (Ukraine). It was established that post-annealing slightly improves the corrosion resistance of the AM titanium alloy compared to the deformable one. Instead, gas nitriding, due to the formation of a chemically inert nitride layer on the surface, improves the corrosion resistance of AM titanium alloy by 1…2 orders of magnitude compared to the untreated one.

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