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Electrochemical properties of the heat-treated Ti-6Al-4V alloy manufactured by direct energy deposition

•Ti-6Al-4V DED samples with different heat treatment observed evolution of structure and phase composition.•Improvement in the quality of the DED samples with different heat treatment modes was determined.•The mechanism of electrochemical corrosion is considered.•Electrochemical properties of the DE...

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Published in:Journal of alloys and compounds 2022-04, Vol.899, p.163226, Article 163226
Main Authors: Shalnova, Svetlana A., Gushchina, Marina O., Strekalovskaya, Darya A., Alekseeva, Ekaterina L., Klimova-Korsmik, Olga G.
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cited_by cdi_FETCH-LOGICAL-c337t-1e83563adae474aaf5220ec710993c274a350b1cd1f438992131752a7e88a4743
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container_title Journal of alloys and compounds
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description •Ti-6Al-4V DED samples with different heat treatment observed evolution of structure and phase composition.•Improvement in the quality of the DED samples with different heat treatment modes was determined.•The mechanism of electrochemical corrosion is considered.•Electrochemical properties of the DED samples with different heat treatment modes was demonstrated.•Increasing in heat treatment temperature leads to increasing of the facets size on the fracture surface. [Display omitted] Additive technologies are actively implemented in various industries. The actual task is a complex study of the properties of the products. In the present work, electrochemical studies of the heat-treated Ti-6Al-4V alloy manufactured by Direct Energy Deposition were carried out to determine the evolution of electrochemical and mechanical properties. The analysis of the structure and phase composition were compared with the results of electrochemical and mechanical properties. The effect of the lamellae size and phase composition on corrosion and mechanical properties is more pronounced for the DED Ti-6Al-4V alloy. It was determined that the best electrochemical properties are possessed by a heat treated sample at 800 °C. With an increase the temperature of the heat treatment up to 900 °C, the corrosion resistance decreases, however, the values of relative elongation increase.
doi_str_mv 10.1016/j.jallcom.2021.163226
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[Display omitted] Additive technologies are actively implemented in various industries. The actual task is a complex study of the properties of the products. In the present work, electrochemical studies of the heat-treated Ti-6Al-4V alloy manufactured by Direct Energy Deposition were carried out to determine the evolution of electrochemical and mechanical properties. The analysis of the structure and phase composition were compared with the results of electrochemical and mechanical properties. The effect of the lamellae size and phase composition on corrosion and mechanical properties is more pronounced for the DED Ti-6Al-4V alloy. It was determined that the best electrochemical properties are possessed by a heat treated sample at 800 °C. 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[Display omitted] Additive technologies are actively implemented in various industries. The actual task is a complex study of the properties of the products. In the present work, electrochemical studies of the heat-treated Ti-6Al-4V alloy manufactured by Direct Energy Deposition were carried out to determine the evolution of electrochemical and mechanical properties. The analysis of the structure and phase composition were compared with the results of electrochemical and mechanical properties. The effect of the lamellae size and phase composition on corrosion and mechanical properties is more pronounced for the DED Ti-6Al-4V alloy. It was determined that the best electrochemical properties are possessed by a heat treated sample at 800 °C. 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source ScienceDirect Journals
subjects Additive technologies
Corrosion effects
Corrosion resistance
Deposition
Direct energy deposition
Electrochemical analysis
Electrochemical properties
Elongation
Heat treatment
Mechanical properties
Phase composition
Ti-6Al-4V
Titanium alloys
Titanium base alloys
title Electrochemical properties of the heat-treated Ti-6Al-4V alloy manufactured by direct energy deposition
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